2010 PGA Championship, Field
The following qualification criteria were used to select the field. Each player is listed according to the first category by which he qualified, but other categories are shown in parentheses.


2010 PGA Championship, Field
1. All former PGA ChampionsMark Brooks, John Daly, Steve Elkington, Pádraig Harrington (4,6,8,9), Davis Love III, Shaun Micheel, Phil Mickelson (3,8,9,10), Vijay Singh, David Toms, Tiger Woods (2,4,6,8,10), Yang Yong-eun (6,8)(Eligible but did not compete: Rich Beem, Jack Burke Jr., Dow Finsterwald, Raymond Floyd, Doug Ford, Al Geiberger, Wayne Grady, David Graham, Hubert Green, Don January, John Mahaffey, Larry Nelson, Bobby Nichols, Jack Nicklaus, Gary Player, Nick Price, Jeff Sluman, Dave Stockton, Hal Sutton, Lee Trevino, Lanny Wadkins)


2010 PGA Championship, Field
2. Last five U.S. Open ChampionsÁngel Cabrera (3,8), Lucas Glover (6,8), Graeme McDowell (6,8,9,10), Geoff Ogilvy (8,10)


2010 PGA Championship, Field
4. Last five British Open ChampionsStewart Cink (8,9), Louis Oosthuizen (8,10)


2010 PGA Championship, Field
6. 15 low scorers and ties in the 2009 PGA ChampionshipErnie Els (8,10), Dustin Johnson (8,10), Martin Kaymer, Søren Kjeldsen, Rory McIlroy (8,10), John Merrick, Francesco Molinari, Henrik Stenson (9)


2010 PGA Championship, Field
7. 20 low scorers in the 2010 PGA Professional National ChampionshipDanny Balin, Ryan Benzel, Kyle Flinton, Scott Hebert, David Hutsell, Stu Ingraham, Rob Labritz, Mitch Lowe, Robert McClellan, Bob Moss, Keith Ohr, Troy Pare, Jason Schmuhl, Mark Sheftic, Sonny Skinner, Mike Small, Bruce Smith, Rich Steinmetz, Chip Sullivan, Tim Thelen


2010 PGA Championship, Field
8.


2010 PGA Championship, Field
Top 70 leaders in  from the 2009 WGC-Bridgestone Invitational and Legends Reno-Tahoe Open to the 2010 Greenbrier ClassicStephen Ames (10), Stuart Appleby (10), Ricky Barnes, Jason Bohn (10), Chad Campbell (9),  Paul Casey (9), K. J. Choi, Tim Clark (9, 10), Ben Crane (9,10), Brian Davis, Jason Day (10), Brendon de Jonge, Luke Donald, Jason Dufner, Rickie Fowler,  Jim Furyk (9,10),  Sergio García (9), Brian Gay, Retief Goosen, Bill Haas (10), J. B. Holmes (9), Charles Howell III, Freddie Jacobson, Anthony Kim (9,10), Matt Kuchar (10), Martin Laird (10), Marc Leishman, Hunter Mahan (9,10), Steve Marino, Troy Matteson (10), Bryce Molder, Ryan Moore (10), Kevin Na,  Sean O'Hair, Jeff Overton, Ryan Palmer (10), Kenny Perry (9), Tim Petrovic, Carl Pettersson (10), Ian Poulter (9,10), Justin Rose (9,10), Rory Sabbatini,  Charl Schwartzel,  Adam Scott (10), Heath Slocum (10), Brandt Snedeker, Steve Stricker (9, 10), Vaughn Taylor, Bo Van Pelt, Scott Verplank, Camilo Villegas (10), Nick Watney,  Bubba Watson (10), Charlie Wi


2010 PGA Championship, Field
9. Members of the United States and European 2008 Ryder Cup teams (provided they are ranked in the top 100 in the Official World Golf Rankings on August 2, 2010)Søren Hansen, Miguel Ángel Jiménez, Robert Karlsson, Oliver Wilson(Ben Curtis (ranked 106), Justin Leonard (101), and Boo Weekley (162) failed to qualify under this category, but played out of other categories.)


2010 PGA Championship, Field
10. Winners of tournaments co-sponsored or approved by the PGA Tour since the 2009 PGA ChampionshipCameron Beckman, Matt Bettencourt, Derek Lamely, Bill Lunde


2010 PGA Championship, Field
11. Vacancies are filled by the first available player from the list of alternates (those below 70th place in official money standings). Paul Goydos, Jerry Kelly, Justin Leonard, George McNeill, John Senden, Kevin Stadler, Jimmy Walker


2010 PGA Championship, Field
12. The PGA of America reserves the right to invite additional players not included in the categories listed aboveFredrik Andersson Hed, Grégory Bourdy, Darren Clarke, Ben Curtis, Rhys Davies, Simon Dyson, Gonzalo Fernández-Castaño, Ross Fisher, Hiroyuki Fujita, Stephen Gallacher, Anders Hansen, Peter Hanson, Tetsuji Hiratsuka, David Horsey, Yuta Ikeda, Ryo Ishikawa, Raphaël Jacquelin, Simon Khan, Kim Kyung-tae, Liang Wenchong, Shane Lowry, Ross McGowan, Edoardo Molinari, Colin Montgomerie, Noh Seung-yul, Koumei Oda, Corey Pavin, Álvaro Quirós, Michael Sim, Thongchai Jaidee, Boo Weekley, Mike Weir, Danny Willett, Chris Wood


2010 PGA Championship, Round summaries, First round
The start of play was delayed on Thursday morning by over three hours due to fog; when the early starters finally got out, Bubba Watson and Francesco Molinari posted the best scores, setting a clubhouse target of four-under-par. Play was suspended on Thursday evening with half the field yet to complete their rounds; a second fog delay on Friday morning further delayed completion of the first round. Matt Kuchar defied the stoppages to take the first round lead, chasing his first win after a year of top-10s. Teenager Noh Seung-yul was only one shot behind, in the group at four-under, looking to become the second successive Korean PGA Championship winner.


2010 PGA Championship, Round summaries, Second round
Matt Kuchar fired a second-round 69 to lead by one shot after day two. Fog again delayed the start by two and a half hours, but Kuchar was eight under at the close, one ahead of fellow American Nick Watney. The late start meant half the field would finish their rounds on Saturday.


2010 PGA Championship, Round summaries, Third round
In the third round, Liang Wenchong shot a course-record 64 and moved into a tie for fourth place. Overnight leader Matt Kuchar dropped back to seven under, and Nick Watney shot a 66 to take a three-stroke lead over Rory McIlroy and Dustin Johnson going into the final round. Half the 156 starters were forced to complete their seconds rounds on the Saturday after almost six hours were lost because of fog over the first two days.


2010 PGA Championship, Round summaries, Final round
Seven different players held at least a share of the lead in the final round. Overnight leader Watney collapsed with an 81 (+9), including a triple-bogey on the 7th hole when he hit his ball into the water after hearing a camera click. Steve Elkington made a run towards the end, tying for the lead with a birdie on 16, but bogeyed the last two holes to finish two strokes back. Bubba Watson frequently drove his tee shots over 350 yards (320 m) and shot 68, including a birdie on the 16th hole to tie for the lead.


2010 PGA Championship, Round summaries, Final round
He finished at 277, 11-under par. Kaymer, who held the lead for most of the day, made a 15-foot (5 m) par putt at the 18th hole to tie Watson for the clubhouse lead. McIlroy had a 15-footer for birdie on the 72nd green to tie for the lead with Watson and Kaymer, but missed. Dustin Johnson birdied 16 and 17 to take a one-shot lead with one hole to play, but bogeyed the final hole to apparently tie for the lead.


2010 PGA Championship, Round summaries, Final round
After further review, it was decided that he  had "grounded his club" in a bunker just off the edge of the 18th fairway, which is a contravention of Rule 13.4 of the Rules of Golf. Johnson readily admitted that he grounded his club but he did not know that the sandy patch beside the 18th fairway from which he played his second shot was deemed to be a bunker. He was given a two-stroke penalty and fell into a tie for fifth place.


2010 PGA Championship, Round summaries, Playoff
Kaymer and Watson advanced to the three-hole aggregate playoff, played on the 10th, 17th, and 18th holes. Watson nearly drove the green on the short par-4 and capitalized with a birdie to take the early lead; Kaymer missed a long birdie putt and made par. On the par-3 17th, Kaymer tied Watson by making a 15-footer for birdie while Watson missed a 45-footer and had to settle for par. Tied with one hole remaining, the playoff was now effectively sudden-death on the par-4 18th.


2010 PGA Championship, Round summaries, Playoff
Both hit their tee shots into the right rough, and Watson played aggressively; he went for the green on his second shot but it fell well short, into the creek in front of the green. With Watson in the hazard, Kaymer elected to lay up from his poor lie and only advanced the ball a little ways up the fairway on his second shot, and hit his third shot within 15 feet (5 m) from the cup.


2010 PGA Championship, Round summaries, Playoff
After his drop from the hazard, Watson hit his fourth shot through the green into a bunker, but nearly holed the bunker shot for bogey that potentially could have extended the playoff. Kaymer's putt for par ended two feet (0.6 m) past and below the hole; he sank the bogey putt to win his first major championship.


2010 PGA Championship, Television
Television coverage was provided in the United States by CBS and TNT, and in the United Kingdom by Sky Sports.


2010 PGA Tour
The 2010 PGA Tour season ran from January 7 to November 14. The season consisted of 46 official money events. This included four major championships and three World Golf Championships, which are also sanctioned by the European Tour.


2010 PGA Tour, Schedule
The following table lists the main season events for 2010. "Date" is the ending date of each event. The numbers in parentheses after the winners' names are the number of wins they had on tour up to and including that event.


2010 PGA Tour, Money leaders
This shows the money leaders for the 2010 PGA Tour season. These figures do not include FedEx Cup bonus money.


2010 PGA Tour Qualifying School graduates
This is a list of the 29 players who earned their 2011 PGA Tour card through Q School in 2010. Note: Michael Putnam and Justin Hicks had already qualified for the PGA Tour by placing in the Top 25 during the 2010 Nationwide Tour season; they did not count among the Top 25 Q school graduates, but Putnam did improve his status.


2010 PGA Tour Qualifying School graduates, 2011 Results
*PGA Tour rookie in 2011T = Tied Green background indicates the player retained his PGA Tour card for 2012 (finished inside the top 125). Yellow background indicates the player did not retain his PGA Tour card for 2012, but retained conditional status (finished between 126-150). Red background indicates the player did not retain his PGA Tour card for 2012 (finished outside the top 150).


2010 PGA Tour of Australasia
The 2010 PGA Tour of Australasia is a series of men's professional golf events played mainly in Australia and New Zealand. The main tournaments on the PGA Tour of Australasia are played in the southern summer so they are split between the first and last months of the year.


2010 PGA Tour of Australasia, Tournament results
The table below shows the 2010 schedule. It only lists official money events on the tour. The number in brackets after each winner's name is the number of PGA Tour of Australasia events he had won up to and including that tournament. This information is only shown for PGA Tour of Australasia members.


2010 PLFA season
The 2010 season of the Polish American Football League (PLFA I) was the 5th season played by the major american football league in Poland. Regular season play was held from March 27 to July 4, 2010. The Polish champion title was eventually won by the Devils Wrocław when they defeated The Crew Wrocław; the Polish Bowl championship game, at the Niskie Ląki stadium in Wrocław, Lower Silesian Voivodeship on July 24.


2010 PSA Super Series
The PSA Super Series 2010 is a series of men's squash tournaments which are part of the Professional Squash Association (PSA) World Tour for the 2010 squash season. The PSA Super Series tournaments are some of the most prestigious events on the men's tour. The best-performing players in the Super Series events qualify for the annual 2010 PSA World Series Finals tournament. Nick Matthew and Amr Shabana managed to reach the final of the 2010 PSA World Series Squash Finals, but this year there was no winner, because the venue at the Queens Club arena where the final was due to take place was damaged by gales.


2010 PSA Super Series, PSA Super Series Ranking Points
PSA Super Series events also have a separate World Series ranking. Points for this are calculated on a cumulative basis after each Super Series event. The top eight players at the end of the calendar year are then eligible to play in the PSA World Series Finals.


2010 PSA Super Series, Super Series Standings 2010
Bold – The first eight players present for the final


2010 PSA World Tour
The PSA World Tour 2010 is the international squash tour organised circuit organized by the Professional Squash Association (PSA) for the 2010 squash season. The most important tournament in the series is the World Open held in Saudi Arabia. The tour features three categories of regular events, Super Series, which feature the highest prize money and the best fields, Stars Tournament and Challenger. The Tour is concluded by the PSA Super Series Finals, the end of season championship for the top 8 rated players.


2010 PSA World Tour, 2010 Calendar, Stars
Prize money: between $25,000 (2&1/2 Stars) and $50,000 (5 Stars)


2010 PSA World Tour, Retirements
Following is a list of notable players (winners of a main tour title, and/or part of the PSA World Rankings top 30 for at least one month) who announced their retirement from professional squash, became inactive, or were permanently banned from playing, during the 2010 season:


2010 PTT Pattaya Open
The 2010 PTT Pattaya Open was a women's professional tennis tournament played on outdoor hard courts. It was the 19th edition of the PTT Pattaya Open (formerly known as the Pattaya Women's Open) and was part of the International category on the 2010 WTA Tour. It took place at Dusit Thani Hotel in Pattaya, Thailand from 7 February through 14 February 2010.


2010 PTT Pattaya Open
The top two seeds were the defending champion Vera Zvonareva, Wimbledon quarterfinalist Sabine Lisicki. Vera Dushevina, 2007 champion Sybille Bammer and home favourite Tamarine Tanasugarn competed too.


2010 PTT Pattaya Open
First-seeded Vera Zvonareva won her second consecutive singles title at the event and earned $37,000 fist-prize money.


2010 PTT Pattaya Open, Finals, Doubles
Marina Erakovic /  Tamarine Tanasugarn defeated  Anna Chakvetadze /  Ksenia Pervak, 7–5, 6–1


2010 PTT Pattaya Open – Doubles
Yaroslava Shvedova and Tamarine Tanasugarn are the defending champions, but Shvedova chose not to participate this year. Tanasugarn partnered up with Marina Erakovic and they won in the final 7–5, 6–1, against Anna Chakvetadze and Ksenia Pervak.


2010 PTT Pattaya Open – Singles
Vera Zvonareva was the defending champion and she defended the title, defeating Tamarine Tanasugarn in the final, 6–4, 6–4.


2010 PTT Thailand Open
The 2010 PTT Thailand Open was a tennis tournament played on indoor hard courts. It was the 8th edition of the Thailand Open, and was part of the ATP World Tour 250 Series of the 2010 ATP World Tour. It took place at the Impact Arena in Bangkok, Thailand, from September 27 through October 3, 2010.


2010 PTT Thailand Open, Entrants, Other entrants
The following players received wildcards into the singles main draw:


2010 PTT Thailand Open, Entrants, Other entrants
The following player received a Special Exempt into the singles main draw:


2010 PTT Thailand Open, Champions, Doubles
Christopher Kas /  Viktor Troicki def. Jonathan Erlich /  Jürgen Melzer, 6–4, 6–4.


2010 PTT Thailand Open – Doubles
Eric Butorac and Rajeev Ram were the defending champions but decided not to participate. Christopher Kas and Viktor Troicki won in the final against Jonathan Erlich and Jürgen Melzer 6–4, 6–4.


2010 PTT Thailand Open – Singles
Gilles Simon was the defending champion, but chose not to participate. Guillermo García-López, who eliminated World No.1 Rafael Nadal in the semifinal, won in the final against Jarkko Nieminen, 6–4, 3–6, 6–4 to become the first Spanish winner of this event.


2010 Pacific Coast Soccer League season
The 2010 Pacific Coast Soccer League season was the 15th season in the modern era of the league. The regular season began on 1 May and ended on 18 July, and was followed by the Challenge Cup, a post season tournament of the top four teams to determine the league's champion. Each team played 16 games. The women's open division consisted of 9 teams while the men's open division had 7.


2010 Pacific Coast Soccer League season
In the Men's Premier division, the Vancouver Thunderbirds won both the season and the playoffs. In the Women's Premier division, the Whitecaps Prospects finished the regular season in first place, but the Fraser Valley Action won the playoffs.


2010 Pacific Coast Soccer League season, Men's
The 2010 Pacific Coast Soccer League season will be played from 1 May to 18 July 2010. This season will see 7 teams on the Premier Men's group compete. At the end of the season there will be a play-off to determine which team will enter the BC Senior A Cup.


2010 Pacific Coast Soccer League season, Women's
The teams played a 16-game, unbalanced schedule. The Whitecaps residency program that recruits from around the province ran rough shod over the other teams. The Victoria Highlanders women also were dominant with two former professionals on their roster.


2010 Pacific Curling Championships
The 2010 Pacific Curling Championships were held from November 16 to the 23, 2010 in Uiseong, South Korea. The Pacific Championships act as the qualifiers for the 2011 World Curling Championships. The top two women's berths moved on to the 2011 Capital One World Women's Curling Championship in Esbjerg, Denmark, while the top two men's berths moved on to the 2011 Ford World Men's Curling Championship in Regina, Saskatchewan, Canada.


2010 Pacific Curling Championships
The teams participating in the Pacific Curling Championships first played in a double round-robin where each team played against the other teams twice. The top 4 of each group (men's or women's) moves on to the playoffs. The playoffs include a semifinals round and a finals round. In the semifinals round, the winner is determined with a best-of-five series, the first two games of which are taken from the round robin games. The winners of these best-of-five series then play against each other in the final match.


2010 Pacific Curling Championships, Women, Teams
Third: Laurie Weeden Second: Lyn Gill Lead: Madeleine Wilson Coach: Janice Mori


2010 Pacific Curling Championships, Women, Teams
Third: Liu Yin Second: Yue Qingshuang Lead: Liu Sijia Alternate: Sun Yue Coach: Tan Weidong


2010 Pacific Curling Championships, Women, Teams
Third: Shinobu Aota Second: Anna Ohmiya Lead: Kotomi Ishizaki Alternate: Natsuki Saito Coach: Shinya Abe


2010 Pacific Curling Championships, Women, Teams
Third: Lee Seul-bee Second: Shin Mi-sung Lead: Gim Un-chi Alternate: Lee Hyun-jung Coaches: Choi Min-suk, Chung Young-sup


2010 Pacific Curling Championships, Women, Teams
Third: Bridget Becker Second: Marisa Jones Lead: Natalie Campbell Alternate: Katie Bauer Coach: Peter Becker


2010 Pacific Curling Championships, Women, Playoffs
Note: First two games of Semifinals best-of-five are taken from round-robin games.


2010 Pacific Curling Championships, Men, Teams
Third: Ian Palangio Second: John Theriault Lead: Matthew Panoussi Alternate: Vaughan Rosier Coach: Jay Merchant


2010 Pacific Curling Championships, Men, Teams
Third: Xu Xiaoming Second: Zang Jialiang Lead: Ba Dexin Alternate: Chen Lu'an Coach: Zhang Wei


2010 Pacific Curling Championships, Men, Teams
Third: Yuki Sawamukai Second: Yusaku Sibaya Lead: Ryosuke Hameishi Alternate: Taichi Teramachi Coach: Tetsu Eda


2010 Pacific Curling Championships, Men, Teams
Third: Kim Soo-hyuk Second: Kim Tae-hwan Lead: Nam Yoon-ho Alternate: Lee Ye-jun Coach: Lee Doo-sung


2010 Pacific Curling Championships, Men, Teams
Third: Warren Kearney Second: Kris Miller Lead: Warren Dobson Alternate: Kenny Thomson Coach: Peter Becker


2010 Pacific Curling Championships, Men, Teams
Third: Nicholas Hsu Second: Brendon Liu Lead: Jan-Quinn Yu Alternate: Steve Koo Coach: Craig Lightbody


2010 Pacific Curling Championships, Men, Playoffs
Note: First two games of Semifinals best-of-five are taken from round-robin games.


2010 Pacific League Climax Series
The 2010 Pacific League Climax Series (PLCS) consisted of two consecutive series, Stage 1 being a best-of-three series and Stage 2 being a best-of-six with the top seed being awarded a one-win advantage. The winner of the series advanced to the 2010 Japan Series, where they competed against the 2010 Central League Climax Series winner. The top three regular-season finishers played in the two series. The PLCS began on with the first game of Stage 1 on October 9 and ended with the final game of Stage 2 on October 19.


2010 Pacific Netball Series
The 2010 Pacific Netball series was held in Raratonga, Cook Islands between 3-5 June 2010.


2010 Pacific Rim Gymnastics Championships
The 2010 Pacific Rim Championships held from 29 April to 2 May 2010 in Melbourne.


2010 Pacific Rugby Cup
The 2010 Pacific Rugby Cup was the fifth edition of the Pacific Rugby Cup competition. First held in 2006, the 2010 edition, like its predecessors, featured 6 representative rugby union football teams; 2 from each of the three Pacific rugby unions - Fiji, Samoa and Tonga.


2010 Pacific Rugby Cup
Fiji Warriors won the championship, defeating Fiji Barbarians in the final.


2010 Pacific Rugby Cup, Teams and format
The teams played a single round robin (home or away) series. The two top teams in the final standings met in the grand final match, with the first ranking team awarded home advantage.


2010 Pacific Rugby Cup, Table
Classification:Teams standings are calculated as follows:Most log points accumulated from all matchesMost log points accumulated in matches between tied teamsHighest difference between points scored for and against accumulated from all matchesMost points scored accumulated from all matches


2010 Pacific Rugby League Tests
There were four Pacific Rugby League International in 2010. The first was the ANZAC test in May. Then Samoa and Fiji in June. In June there were two games between Samoa and New Zealand and then the Polynesian Cup between Samoa and Tonga.


2010 Pacific Rugby League Tests, Results, ANZAC test
The 2010 ANZAC Test was a rugby league test match played between Australia and New Zealand on 7 May 2010. The match coincided with the official opening of AAMI Park in Melbourne. The match was won by Australia with a score of 12–8.


2010 Pacific hurricane season
The 2010 Pacific hurricane season was the least active Pacific hurricane season on record, tied with 1977. The season saw only eight named storms, alongside a record-breaking low of three hurricanes. However, of those three, two of them became major hurricanes, and one hurricane, Celia, reached Category 5 intensity on the Saffir-Simpson scale. Also had the second-fewest ACE units on record, as many of the storms were weak and short-lived. The season officially began on May 15 in the East Pacific Ocean, and on June 1 in the Central Pacific; they ended on November 30. These dates conventionally delimit the period of each year when most tropical cyclones form in the Pacific basin. However, the formation of tropical cyclones is possible at any time of the year.


2010 Pacific hurricane season
Unlike the previous season, the first storm of the season, Agatha, formed during the month of May. Agatha developed on May 29 near the coast of Guatemala. In the second week of June, a sudden spree of tropical cyclones developed, and between June 16 and 22, four cyclones formed, including the two major hurricanes of the season, Celia and Darby, the first of which reached Category 5 intensity. However, following the record active June, July saw zero named storms. In August and September only 2 tropical storms and one hurricane formed. Tropical Depression Eleven-E caused a great deal of flooding in southern Mexico, causing millions of dollars in damage, as well as causing over 50 deaths and $500 million in damage in areas of Oaxaca and Guatemala. Tropical Storm Omeka was a rare off-season storm.


2010 Pacific hurricane season, Seasonal forecasts
On May 19, 2010, the National Oceanic and Atmospheric Administration (NOAA) released their forecast for the 2010 Central Pacific hurricane season, which would start on June 1. They expected two or three cyclones to form in or enter the region throughout the season, below the average of four or five storms. The below-average activity forecast was based on two factors: the first was the continuance of a period of decreased activity in the central Pacific; and second, the effects of a Neutral El Niño–Southern Oscillation (ENSO) or La Niña, both of which reduce cyclone activity in the region. However, in light of the near-miss of Hurricane Felicia the previous year, forecasters at the Central Pacific Hurricane Center gave the public a basic message for the 2010 season, "Prepare! Watch! Act! ".


2010 Pacific hurricane season, Seasonal forecasts
On May 27, 12 days after the official start of the 2010 eastern Pacific hurricane season, NOAA released their forecast for the basin. Similar to the forecast for the central Pacific, below-average activity was expected, with nine to fifteen named storms forming, four to eight of which would become hurricanes and a further one to three would become major hurricanes. This lessened activity was based on the same two factors as the central Pacific, decreased activity since 1995 and the ENSO event. Overall, NOAA stated there was a 75% chance of below-average activity, 20% of near-normal and only a 5% chance of above-average due to a strong La Niña.


2010 Pacific hurricane season, Seasonal summary
The accumulated cyclone energy (ACE) index for the 2010 Pacific hurricane season was 49.9625 units in the Eastern Pacific and 2.0825 units in the Central Pacific. The total ACE in the basin is 52.045 units. This ranked as the third-quietest since 1966, just above 1977 and 2007. The vast majority of the ACE stemmed from Hurricanes Celia and Darby, which collectively accounted for roughly 70 percent of the seasonal total.


2010 Pacific hurricane season, Seasonal summary
Continuing a trend of below-average activity that began in 1995, the 2010 season was quiet as expected. The Eastern Pacific proper saw record-low numbers of named storms and hurricanes, with only seven and three respectively forming. Inclusive of the Central Pacific, the basin tied its record low activity of eight named storms set in 1977.


2010 Pacific hurricane season, Seasonal summary
Inactivity was largely attributed to a moderately strong La Niña event which resulted in below-average sea surface temperatures across the basin. Another major factor limiting storm formation was the eastward displacement of 200 mb divergence. The displacement of this feature brought conditions that favor tropical development closer to the rugged terrain of Mexico and Central America, a factor known to disrupt low-level circulations. Accordingly, six of the seven named storms in the Eastern Pacific proper formed east of 106°W, four of which originated over the Gulf of Tehuantepec where the greatest depth of warm waters were restricted to. A final limiting factor was above-average wind shear across much of the basin east of 130°W and north of 10°N.


2010 Pacific hurricane season, Seasonal summary
The season began with record-high activity, featuring two major hurricanes in June. ACE values exceeded 300 percent of the long-term mean, though most was due to Category 5 Hurricane Celia. Hurricane Celia was also the second-earliest forming storm of that intensity during the course of a season, surpassed only by Hurricane Ava in 1973. The month featured an ACE value of 37.22, eclipsing the previous record set in 1984.


2010 Pacific hurricane season, Seasonal summary
Furthermore, Darby was the earliest second major hurricane of a season, eclipsing Hurricane Daniel (1978); however, this has since been surpassed by Cristina in 2014, Blanca in 2015, and Bud in 2018. This activity abruptly halted and languished throughout the month of July. No named storms developed during the month, marking the first such occurrence since 1966. However, due to the activity in June, ACE value for the season by the start of August remained slightly above normal, roughly 107 percent the yearly mean. Through the remainder of the season, the basin observed record low activity with only three additional named storms developing.


2010 Pacific hurricane season, Seasonal summary
The record inactivity experienced in the Northeastern Pacific also took place in the Northwestern Pacific. Since reliable records began in the 1970s, there has been no precedent for both basins experiencing exceptionally low tropical cyclone formation. Moreover, this general lack of storm formation was reflected in all cyclone basins except the Atlantic. On average, the Northeastern Pacific accounts for 16 percent of the world's storms; however, during 2010, it accounted for roughly 10 percent (7 out of 67 cyclones).


2010 Pacific hurricane season, Systems, Tropical Storm Agatha
Early May 29, the season's first tropical depression consolidated near the Gulf of Tehuantepec. Large-scale southwesterly flow prompted the system to move slowly northeast. Scatterometer data indicated the depression soon strengthened into a tropical storm, at which time it was assigned the name Agatha. Attaining peak winds of 45 mph (70 km/h), Agatha soon made landfall late on May 29 near Champerico, Guatemala, just south of the border with Mexico. Once onshore, the mountainous terrain of Guatemala caused the storm to quickly dissipate early on May 30.


2010 Pacific hurricane season, Systems, Tropical Storm Agatha
Although a weak tropical cyclone, Agatha brought torrential rainfall to much of Central America. Daily accumulations peaked at 16.78 in (426 mm) in Montufar, Guatemala and 19.0 in (483 mm) in Ilopango, El Salvador. According to Guatemala's president, Álvaro Colom, some areas received more than 3.3 ft (1 m) of rain. The ensuing flash floods and landslides proved catastrophic, especially in Guatemala where at least 174 people died. In El Salvador, 11 people were killed and damage from the storm reached $112.1 million. Honduras also suffered significant losses from the storm with 18 fatalities and at least $18.5 million in damage. One person was also killed in Nicaragua. The storm also associated with a very large sinkhole.


2010 Pacific hurricane season, Systems, Tropical Depression Two-E
A tropical wave emerged off the west coast of Africa on June 2 and entered the Atlantic Ocean. Tracking westward, the system eventually reached the eastern Pacific on June 13. As it approached the Gulf of Tehuantepec, convection increased, despite strong wind shear. Early on June 16, sufficient development had taken place for the NHC to classify the wave as a tropical depression, at which time the depression was situated roughly 110 mi (175 km) south of Salina Cruz, Mexico. A scatterometer pass over the storm revealed it to have attained peak winds of 35 mph (55 km/h) later that day. Thereafter, wind shear took its toll on the system and its low-level circulation ultimately dissipated early on June 17 while still off the coast of Mexico.


2010 Pacific hurricane season, Systems, Tropical Depression Two-E
Due to its proximity to land, tropical storm watches and warnings were issued in advance of the storm when the system was first classified. This was discontinued when the system dissipated. Rainfall associated with the depression extended as far north as Oaxaca. In San Juan Bautista Tuxtepec, 82 homes were damaged by flood waters and 40 others were affected in the town of Zimatlán de Alvarez. Some homes lost their roofs and a few trees were downed as a result of high winds.


2010 Pacific hurricane season, Systems, Tropical Storm Blas
On May 30, a new tropical wave moved off the west coast of Africa and entered the Atlantic Ocean. Little convective development took place as it traversed the region; however, as it crossed Central America between June 9 and 10, it began to show signs of strengthening. By June 13, an area of low pressure developed within the wave and slowly developed a surface circulation over the following 48 hours as it remained nearly stationary over open waters.


2010 Pacific hurricane season, Systems, Tropical Storm Blas
Early on June 17, deep convection was able to maintain itself over the system, prompting the NHC to classify the low as Tropical Depression Three-E; at this time, the depression was situated 305 mi (490 km) south-southwest of Manzanillo, Mexico. Within hours of becoming a tropical depression, a ship in the region reported sustained winds of 45 mph (70 km/h), indicating that the system had developed into a tropical storm. The newly upgraded storm, now named Blas by the NHC, began to track slowly to the northwest, and later nearly due west, in response to a strengthening ridge over Mexico.


2010 Pacific hurricane season, Systems, Tropical Storm Blas
Strong wind shear prevented Blas from strengthening further over the following day; however, by June 19, the system entered a region of weaker shear. This allowed convection to develop over the center of circulation and that afternoon, the storm attained its peak intensity with winds of 65 mph (105 km/h) and a pressure of 992 mbar (hPa; 29.29 inHg). Shortly thereafter, cooler sea surface temperatures took their toll on Blas, causing the storm to gradually weaken. By June 21, the system weakened to a tropical depression as convection diminished. Hours later, it degenerated into a non-convective remnant low while situated about 715 mi (1,150 km) west-southwest of the southern tip of Baja California Sur. The remnants of Blas persisted through June 23 as they continued westward, before it dissipated to a weak upper-level low.


2010 Pacific hurricane season, Systems, Hurricane Celia
Celia formed out of a tropical wave on June 18, quickly organized into a tropical storm, and later into a hurricane the following day as deep convection consolidated around the center. On June 21, the storm further intensified into a Category 2 hurricane; however, over the following days, Celia's winds fluctuated. The system briefly attained major hurricane status on June 23 before temporarily succumbing to wind shear. Once this shear lightened the next day, Celia rapidly intensified to attain its peak intensity with winds of 160 mph (255 km/h) and an estimated barometric pressure of 921 mbar (hPa; 27.20 inHg).


2010 Pacific hurricane season, Systems, Hurricane Celia
Not long after reaching this strength, wind shear increased and the system entered a dry, stable environment. Over the following 42 hours, sustained winds decreased to tropical storm force and the system began to stall over the open ocean by June 27. Despite highly unfavorable conditions, the storm managed to retain tropical storm status through June 28 and degenerated into a non-convective remnant low that evening. The remnants of Celia continued to drift towards the north before finally dissipating on June 30, about 990 mi (1,590 km) southwest of the southern tip of Baja California Sur.


2010 Pacific hurricane season, Systems, Hurricane Darby
The second, and final, major hurricane of the season, Hurricane Darby originated from a vigorous tropical wave that moved off the west coast of Africa on June 8. Initially well-organized, the wave rapidly deteriorated within 24 hours; it continued westward without redevelopment and entered the Eastern Pacific on June 19. The following day, an area of low pressure developed within the system as it slowed and turned towards the west-northwest. Gradually organizing, the low strengthened into a tropical depression on June 23 while situated roughly 380 mi (610 km) south-southeast of Salina Cruz, Mexico.


2010 Pacific hurricane season, Systems, Hurricane Darby
Over the following two days, Darby underwent two periods of rapid intensification. At the end of the second phase on June 25, the storm attained its peak intensity as a Category 3 hurricane with winds of 120 mph (195 km/h) and a pressure of 959 mbar (hPa; 28.32 inHg). Though a strong storm, Darby was unusually small with tropical storm force winds extending only 70 mi (115 km) from its center.


2010 Pacific hurricane season, Systems, Hurricane Darby
Not long after peaking, a large area of westerly winds, produced by Hurricane Alex over the Gulf of Mexico, caused Darby to stall offshore before turning to the east, being drawn into the circulation of the larger storm. Increased wind shear produced by the "massive outflow of Alex" caused the small storm to rapidly weaken. By June 28, Darby had diminished to a tropical depression and later to a remnant low off the coast of Mexico. The low persisted for another day before fully dissipating offshore.


2010 Pacific hurricane season, Systems, Hurricane Darby
While offshore, authorities in Mexico advised residents to be cautious of heavy rains from Darby. Alerts were issued for several areas; however, the storm dissipated before reaching land. The combined effects of Hurricanes Alex and Darby resulted in heavy rains over much of Chiapas, amounting to 12 to 16 in (300 to 400 mm) in some areas. Flash flooding damaged 43 homes and affected 60,000 people.


2010 Pacific hurricane season, Systems, Tropical Depression Six-E
On July 11, a low pressure formed southwest of Central America. The next day, the system began to organize. After a decrease in convection, the system became more concentrated. After additional development, the NHC upgraded the disturbance into Tropical Depression Six-E on July 14. Six-E slowed down forward momentum, and slowly turned north. The depression did not develop further, and it degenerated into an area of low pressure on July 16. However, the remnant low of the system continued moving westward for the next couple days, before fully dissipating on July 18.


2010 Pacific hurricane season, Systems, Tropical Depression Six-E
Though relatively far from land, the depression's outer bands brought locally heavy rains to portions of Colima and Jalisco.


2010 Pacific hurricane season, Systems, Tropical Storm Estelle
After an unusual, record inactive July, an area of disturbed weather formed off the south coast of Mexico, on August 4 from a tropical wave that left Africa 13 days earlier. The system became better organized throughout the next day, and was upgraded into a tropical depression on August 6, 138 mi (222 km) southwest of Acapulco, Mexico. Initially, there was uncertainty regarding the storm's path. It reached tropical storm status on the same day. On August 8, the storm showed signs of weakening. It was downgraded into a tropical depression the next day. Estelle became a remnant low on August 10, dissipating shortly thereafter.


2010 Pacific hurricane season, Systems, Tropical Storm Estelle
Though the center of Estelle remained offshore, its outer bands brought moderate to heavy rains and increased surf to coastal areas of Guerrero, Michoacán, Colima, and Jalisco on August 7. The following day, a detachment of clouds associated with the storm brought locally heavy rains to Mazatlán, resulting in localized street flooding.


2010 Pacific hurricane season, Systems, Tropical Depression Eight-E
On August 3, a tropical wave moved off the west coast of Africa and tracked westward across the Atlantic Ocean. By August 15, the wave crossed Central America and entered the Eastern Pacific. Over the following five days, development was relatively slow at first, resulting in forecasters at the NHC not predicting the system to become a tropical cyclone. However, on August 20, a low-pressure area formed and quickly became a tropical depression. At this time, the system was situated roughly 185 mi (300 km) west-southwest of Manzanillo, Mexico.


2010 Pacific hurricane season, Systems, Tropical Depression Eight-E
Tracking northwestward in response to a mid-level ridge over northwestern Mexico, the depression moved through a region of moderate wind shear, preventing further development. Once over cooler waters on August 21, convection began to wane and the system degenerated into a remnant low later that day. Continuing along the same path, the remnants of the depression dissipated early on August 23, over open waters.


2010 Pacific hurricane season, Systems, Hurricane Frank
The tropical wave that became Frank was first noticed on August 15 south of the Windward Islands. Tropical Depression Nine-E formed on August 21 south of the Gulf of Tehuantepec. It developed into a tropical storm the following morning. On August 23, Frank continued to intensify, but later faced shear and entered a period of weakening. However, on August 24, as shear decreased, it began to reorganize and strengthen again, becoming a hurricane on August 25. Frank also formed an eye feature that persisted for about a day. Two days later, Frank weakened back into a tropical storm. Frank encountered unfavorable conditions of high shear and cool waters, causing it to rapidly weakening overnight. Frank became a remnant low on August 28.


2010 Pacific hurricane season, Systems, Hurricane Frank
In Mexico, six deaths were reported. A total 30 homes were destroyed with 26 others damaged. Two major roads were damaged with another road blocked due to a landslides. Several rivers overflowed their banks as well. In the wake of the storm, 110 communities requested assistance from the government. By September 14, an estimated 200,000 food packages were distributed to the region. Losses from Hurricane Frank exceeded 100 million pesos (US$8.3 million).


2010 Pacific hurricane season, Systems, Tropical Depression Ten-E
Tropical Depression Ten-E originated from a tropical wave that moved off the west coast of Africa on August 14. Tracking westward, the wave eventually crossed Central America and entered the Pacific Ocean on August 26. Gradual organization took place by early September as deepening convection. During September 3, a low-level circulation developed within the system and the NHC classified it as a tropical depression. At this time, the depression was situated roughly 255 mi (410 km) south-southeast of the southern tip of Baja California Sur.


2010 Pacific hurricane season, Systems, Tropical Depression Ten-E
Located between a strong ridge over Mexico and trough over the north Pacific Ocean, the system tracked northwestward throughout the remainder of its existence. Maximum sustained winds never exceeded 35 mph (55 km/h) before moving into a region cooler waters and moderate wind shear. The combination of these two factors caused convection to diminish; the depression degenerated into a non-convective remnant low on September 4 before dissipating the following day.


2010 Pacific hurricane season, Systems, Tropical Depression Eleven-E
During mid-August, a westward moving tropical wave in the Atlantic Ocean spawned Hurricane Danielle. The southern portion of this system continued its track and later entered the Eastern Pacific on August 29. By September 2, convection consolidated over the Gulf of Tehuantepec and a low-level circulation developed as it moved in a general northward direction. Classified a tropical depression the following day, the National Hurricane Center initially expected it to attain tropical storm status before moving over land.


2010 Pacific hurricane season, Systems, Tropical Depression Eleven-E
A ship in the region measured gale-force winds, supporting this forecast but later analysis revealed that these winds were associated with a broad monsoon trough which the depression was embedded within. Failing to intensify, the system made landfall near Salina Cruz, Mexico and rapidly weakened. Maintaining its circulation, the depression survived its crossing of Mexico and regenerated into Atlantic Tropical Storm Hermine. The crossover of this storm is regarded as an uncommon occurrence, taking place only a handful of times since reliable records in the Atlantic began in 1851.


2010 Pacific hurricane season, Systems, Tropical Depression Eleven-E
Due to the depression's proximity to land, tropical storm warnings were issued for southern Mexico. The depression produced a swath of heavy rain along its immediate track, with localized peaks over 10 in (250 mm) and a storm maximum of 13.6 in (350 mm) in Alvarado, Veracruz. Flooding affected more than 25,000 people in Oaxaca and 6,000 people in Guerrero. The monsoon trough in which the depression was embedded was responsible for tremendous damage across Central America, including at least 54 fatalities and $500 million in damage across Guatemala. At least three others perished in Costa Rica.


2010 Pacific hurricane season, Systems, Tropical Storm Georgette
Georgette originated from a tropical wave that moved off the west coast of Africa on September 1. Tracking westward across the Atlantic, the wave eventually spawned an area of low pressure, which developed into Hurricane Karl on September 14. The wave itself continued through the Caribbean Sea, and entered the Eastern Pacific on September 17, but signification development was not anticipated. Tracking northwestward, the low gradually organized into a tropical depression by September 20, at which time it was situated south of Baja California Sur. Shortly thereafter, it intensified into a tropical storm and was named Georgette.


2010 Pacific hurricane season, Systems, Tropical Storm Georgette
On September 21, Georgette attained its peak intensity with winds of 40 mph (65 km/h) and a minimum pressure of 999 mbar (hPa; 29.50 inHg). The storm struck Baja California Sur later that day before weakening to a tropical depression. It continued north as a depression and made landfall on mainland Mexico on September 22. The system dissipated over northern Mexico early on September 23.


2010 Pacific hurricane season, Systems, Tropical Storm Georgette
Georgette caused the heaviest rains on Baja California Sur in the last 15 years, leaving many people homeless. Georgette also produced high waves. The tropical cyclone worsened Mexico's flooding problem which started when Hurricane Karl made landfall several days earlier. A peak rainfall total of 5.9 in (150 mm) fell in Todos Santos. Throughout Sonora, rainfall up to 4.7 in (120 mm) triggered flooding that damaged 220 homes. Georgette caused 2.61 in (66 mm) of rainfall in Guaymas Flooding was reported in several places (Empalme, Etchojoa, Navojoa, Guaymas, Los Mochis), causing 500,000 people to be evacuated.


2010 Pacific hurricane season, Systems, Tropical Storm Georgette
Heavy runoff caused inflows of 18,000 cu ft/s (510 m3/s) into El Novillo Dam, forcing the Comisión Nacional del Agua, the local water authorities, to release water from the dam. After impacting Mexico, moisture from the system combined with an approaching trough to produce heavy rainfall and thunderstorms across New Mexico. A total of 6.42 in (163 mm) was reported in Gladstone. The rains caused flooding that killed a person along the Rio Grande near Carnuel.


2010 Pacific hurricane season, Systems, Tropical Storm Omeka
On December 16, an extratropical cyclone over the Northern Pacific Ocean began showing signs of tropical cyclogenesis. Drifting southeastward around the International Date Line, the system developed into a subtropical depression within the Central Pacific basin on December 18, becoming the latest-forming system east of 180° and north of the equator in the Pacific Ocean on record. Turning southwest, the system intensified into a subtropical storm later that day before crossing into the Western Pacific. While west of the dateline, the system attained its peak intensity with winds of 60 mph (95 km/h).


2010 Pacific hurricane season, Systems, Tropical Storm Omeka
Gaining more tropical characteristics, the storm transitioned into a fully tropical system a few hours after crossing the dateline for a third time. Upon doing so, it was recognized by the Central Pacific Hurricane Center and given the name Omeka. Turning to the northeast, gradual weakening took place over the following days, before Omeka dissipated north of the Hawaiian Islands, on December 21. That day, the center of Omeka brushed Lisianski Island, with winds of 40 miles per hour (65 km/h). However, no tropical storm watches or warnings were issued since the CPHC anticipated weakening prior to the storm passing the island.


2010 Pacific hurricane season, Systems, Tropical Storm Omeka
At the time, Omeka was judged to have existed in the northeast Pacific later than any other storm since the 1960s, when reliable records begin in the basin. However, according to the CPHC's database, there are two possible tropical cyclones in 1903 and 1904 which developed on December 23. In addition, even though it did not strengthen into a tropical storm, Tropical Depression Nine-C of the 2015 Pacific hurricane season formed later in the calendar year than Omeka, forming on December 31, 2015 and dissipating the next day.


2010 Pacific hurricane season, Storm names
The following names were used for named storms that formed in East Pacific in 2010. This is the same list used in the 2004 season. In March 2011, the World Meteorological Organization announced that it would not retire any names. However, in April 2015, the WMO announced that the name Isis (which was not used in 2010) was being retired, due to the rise of the terrorist group with the same name. The name Ivette was chosen to replace it. Otherwise, this list was used again in the 2016 season.


2010 Pacific hurricane season, Storm names
For storms that form in the Central Pacific Hurricane Center's area of responsibility, encompassing the area between 140 degrees west and the International Date Line, all names are used in a series of four rotating lists. The next four names that were slated for use in 2010 are shown below; however, only the name Omeka was used.


2010 Pacific hurricane season, Storm names, Retirement
On April 17, 2015, the name Isis was removed from the naming lists after being deemed inappropriate because of the militant group of the same name. It was replaced with Ivette for the 2016 season.


2010 Pacific hurricane season, Season effects
This is a table of all of the storms that have formed during the 2010 Pacific hurricane season. It includes their names, duration, peak strength, areas affected, damage, and death totals. Deaths in parentheses are additional and indirect (an example of an indirect death would be a traffic accident), but were still related to that storm. Damage and deaths include totals while the storm was extratropical, a wave, or a low, and all of the damage figures are in 2010 USD.


2010 Pacific typhoon season
The 2010 Pacific typhoon season was the least active Pacific typhoon season on record, featuring only 14 named storms; seven of them strengthened into typhoons while one reached super typhoon intensity. The Pacific typhoon season during 2010 was in fact less active than the 2010 Atlantic hurricane season, with only two other occurrences of that happening, 2005 and 2020 (however these two were hyperactive in terms of tropical storms, 28 in the former, and 30in the latter). In the same year, the Pacific hurricane season broke the same record being the least active season on record. During the season, no storms made landfall in mainland Japan, only the second such occurrence since 1988. Also, all of the 14 named storms developed west of 150°E.


2010 Pacific typhoon season
The season ran throughout 2010, though most tropical cyclones tend to develop between May and October. The season's first named storm, Omais, developed on March 24 while the season's last named storm, Chaba dissipated or became extratropical on October 30. During the season only three storms were notable. Typhoon Kompasu was the strongest storm to make landfall over in South Korea in 15 years. In September, Typhoon Fanapi struck Taiwan and China, causing heavy damage in the two countries. During October, Typhoon Megi reached its peak intensity with a minimum barometric pressure of 885 hPa, making it one of the most intense typhoons ever recorded. In addition, a rare subtropical storm had developed during December and intensified into Tropical Storm Omeka where it crossed the basin.


2010 Pacific typhoon season
The scope of this article is limited to the Pacific Ocean to the north of the equator between 100°E and 180th meridian. Within the northwestern Pacific Ocean, there are two separate agencies that assign names to tropical cyclones which can often result in a cyclone having two names.


2010 Pacific typhoon season
The Japan Meteorological Agency (JMA) will name a tropical cyclone should it be judged to have 10-minute sustained wind speeds of at least 65 km/h (40 mph) anywhere in the basin, whilst the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) assigns names to tropical cyclones which move into or form as a tropical depression in their area of responsibility located between 135°E and 115°E and between 5°N–25°N regardless of whether or not a tropical cyclone has already been given a name by the JMA. Tropical depressions that are monitored by the United States' Joint Typhoon Warning Center (JTWC) are given a number with a "W" suffix.


2010 Pacific typhoon season, Seasonal forecasts
Each season several national meteorological services and scientific agencies forecast how many tropical cyclones, tropical storms, and typhoons will form during a season and/or how many tropical cyclones will affect a particular country.


2010 Pacific typhoon season, Seasonal forecasts, City University of Hong Kong
Since the 2000 Pacific typhoon season, the Guy Carpenter Asia-Pacific Climate Impact Centre (GCACIC), of the City University of Hong Kong (CityUHK), have issued forecasts of activity for each upcoming typhoon season. Forecasts on the number of tropical cyclones, tropical storms and typhoons there would be during 2010 in the Western Pacific were released in April and June. For the first time this year the GCACIC issued forecasts in May and July, which predicted how many tropical cyclones would make landfall in South China, and pass within 100 km (62 mi) of either the Korean Peninsula or Japan during 2010.


2010 Pacific typhoon season, Seasonal forecasts, City University of Hong Kong
In its April 2010 forecast; GCACIC predicted that 28 tropical cyclones, 24 tropical storms, and 16 typhoons would form in the western north Pacific this year. However, in its June forecast the GCACIC reported that they now only expected 27 tropical cyclones, 23 tropical storms, and 15 typhoons, to form during the season. As a result of their predictions the GCACIC also predicted that tropical cyclone activity would be below average for the twelfth year in a row.


2010 Pacific typhoon season, Seasonal forecasts, City University of Hong Kong
In May the GCACIC forecasted that between May and December, six tropical cyclones would make landfall on Southern China and another six tropical cyclones would make landfall on or pass within 100 km (62 mi) of either the Korean Peninsula or Japan. In July the GCACIC forecast that between July and December three tropical cyclones would make landfall on Southern China, while four tropical cyclones would make landfall on or pass within 100 km (62 mi) of either the Korean Peninsula or Japan.


2010 Pacific typhoon season, Seasonal forecasts, Tropical Storm Risk Consortium
Since the 2000 Pacific typhoon season, the Tropical Storm Risk Consortium (TSR) of the University College of London have issued forecasts of activity for each upcoming typhoon season. Forecasts on the number of tropical storms, typhoons and intense typhoons there would be during 2010 in the Western Pacific were released in March, May, July and August. In its March forecast TSR predicted that the season would see activity close to the average with 26 tropical storms, 16 typhoons and seven intense typhoons developing during the season.


2010 Pacific typhoon season, Seasonal forecasts, Tropical Storm Risk Consortium
In its May forecast, while lowering their initial prediction for the amount of tropical storms and typhoons, TSR continued to predict that the season would see activity close to the average, with 24 tropical storms, 15 typhoons and nine intense typhoons developing during the season. In its July forecast TSR significantly lowered their forecast and reported that they now expected activity to be 20% below average, with 23 tropical storms 14 typhoons and seven intense typhoons developing during the season. In its August forecast TSR predicted that activity would be 25% – 30% below average with 23 tropical storms, 13 typhoons and six intense typhoons developing during the season. TSR also predicted that if their August forecast came true then the season would be in the lowest 25% of seasons.


2010 Pacific typhoon season, Seasonal forecasts, National meteorological service predictions
The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) reported on January 7 that they were expecting a total of 19 tropical cyclones to pass through the Philippine area of responsibility during 2010. On March 23 the Hong Kong Observatory (HKO), predicted that less than six tropical cyclones would affect Hong Kong during the season. As a result of being under the influence of a weakening El Niño, the HKO also predicted that the chances of a tropical cyclone affecting Hong Kong before June was not high.


2010 Pacific typhoon season, Seasonal forecasts, National meteorological service predictions
After Vietnam was hit by Tropical Depression 01W in January, the Vietnamese National Center for Hydro Meteorological forecasts predicted in May that 6–7 tropical cyclones would affect Vietnam during 2010. While the Thai Meteorological Department predicted that one or two tropical cyclones would affect Thailand between August and November. On June 30, the Central Weather Bureau of Taiwan predicted that the 2010 season would be below its normal climatic average of 26.6, and predicted that 20–23 tropical storms, would occur over the Western Pacific during 2010. The Central Weather Bureau also predicted that between two and four tropical storms would affect Taiwan during 2010. After the slow start to the season, on July 5, PAGASA reported that they now only expected 13–15 tropical cyclones to pass through the region.


2010 Pacific typhoon season, Season summary
The first tropical cyclone of the season; Tropical Depression 01W formed on January 18, about 300 km to the northeast of Brunei. During the next 2 days the depression moved quickly and made landfall on Vietnam and dissipated over Cambodia during January 20. The depression caused 3 deaths and caused US$243,000 in damage to Vietnam. After 01W had dissipated the Western Pacific became dormant until Tropical Storm Omais formed about 325 km (202 mi) to the southeast of Chuuk Island on March 22.


2010 Pacific typhoon season, Season summary
During the next couple of days Omais impacted the Micronesian islands of Woleai, Fais Ulithi and Yap, before moving into the Philippine area of responsibility and being named as Agaton by PAGASA. However, Omais (Agaton) dissipated on March 26 before it could affect the Philippines. After Omais dissipated there were 2 non-developing tropical depressions only monitored by the JMA in April and June before on July 11 the first typhoon of the season: Conson formed. Conson quickly intensified becoming a typhoon the next day, before making landfall on the Philippines during July 13.


2010 Pacific typhoon season, Season summary
Overall, there were 14 named tropical storms during the season, which was the lowest on record; this was 2 less than the previous record set in 1998, and 12.7 less than the average of 26.7 storms. Although activity was below normal throughout the year, the quietest time of the year, with respect to climatology, was from October to December. Only two storms formed during the time period, which was 5.7 less than average. The overall inactivity was due to a variety of meteorological conditions, including decreased vorticity and suppressed convection. During the summer of 2010, convective activity in southeastern Asia was shifted to the northern Indian Ocean due to winds in the upper atmosphere. However, sea surface temperatures were above normal due to an ongoing La Niña, despite that typically being a favorable factor in tropical cyclogenesis.


2010 Pacific typhoon season, Systems, Tropical Depression 01W
On January 16, a disorganized area of low pressure formed in the south China Sea. The next day, it gradually intensified into a weak tropical disturbance by the JTWC. Early on January 18 the JMA reported that it was upgraded to a tropical depression which had formed within the northeast monsoon about 320 km (200 mi) to the north-west of Bandar Seri Begawan in Brunei. The depression's low level circulation center was partially exposed and located within an area of moderate to strong vertical wind shear.


2010 Pacific typhoon season, Systems, Tropical Depression 01W
However over the next 12 hours, whilst the depression moved towards Vietnam, the low level circulation center rapidly consolidated and became well defined after the vertical wind shear around the system relaxed. As a result of this the JTWC initiated advisories on the depression, designating it as Tropical Depression 01W. During the next day, the depression weakened with the low level circulation center becoming partially exposed, as it moved over an area of cold sea surface temperatures. As a result of this the JTWC issued their final advisory on the system later that day. The depression then made landfall on Vietnam near Gò Công early on January 20 before the JMA then issued their final advisory later that day as the system dissipated over Cambodia.


2010 Pacific typhoon season, Systems, Tropical Depression 01W
Within Vietnam strong waves caused by the tropical depression, causing three people to die, while rowing their coracles to find shelter.


2010 Pacific typhoon season, Systems, Tropical Storm Omais (Agaton)
On March 18, the JTWC reported that an area of deep atmospheric convection had persisted about 325 km (202 mi) to the southeast of Chuuk Island in southern Micronesia. At this stage the poorly organised deep convection was located over a low level circulation center and was in an area of low wind shear. Over the next couple of days both the low level circulation center and the deep convection gradually became better organized, prompting the issuance of a Tropical Cyclone Formation Alert late on March 20.


2010 Pacific typhoon season, Systems, Tropical Storm Omais (Agaton)
During the next day convection continued to build over the low level circulation center, which became well defined whilst moving around the subtropical ridge. The JTWC then initiated advisories on the system later that day, designating it as Tropical Depression 02W, although the JMA did not designate the system as a tropical depression until early on March 22. During March 22 further development of the system was hampered by an anticyclone to the east of the system that caused moderate to strong wind shear.


2010 Pacific typhoon season, Systems, Tropical Storm Omais (Agaton)
Early of the next day, JTWC upgraded the depression into a tropical storm, and on 24 March JMA upgraded it to Tropical Storm Omais, the first of the season. Late on March 25, the JTWC downgraded Omais to tropical depression strength. Tropical Depression Omais re-gained tropical storm status late on March 26 as it was becoming extratropical.


2010 Pacific typhoon season, Systems, Unnamed Tropical Depression
On April 24, an area of low pressure had been formed about 140 km (87 mi) to the west of Palau Island . On the next day, the disturbance start to move westward. On the same time, the disturbance suddenly strengthened and its LLCC began to consolidate as well as significant banding all over the system and located over moderate vertical wind shear.


2010 Pacific typhoon season, Systems, Unnamed Tropical Depression
Early of April 26, the disturbance rapidly strengthen again and was starting to be enhanced by a tropical upper tropospheric trough (TUTT) cell to the northeast of the system, whilst the JMA upgraded it into a tropical depression. Later that day, the depression made landfall over Davao City and Surigao del Sur boundary and crossed central Mindanao. Early on April 27, JMA downgraded the depression into an area of low pressure while it was located in vicinity of Sulu Island. In the next couple of days the low pressure start to move northwest towards South China Sea.


2010 Pacific typhoon season, Systems, Unnamed Tropical Depression
On the same time, the low pressure crossed Palawan Island on the afternoon of April 29. On the next day, the low pressure was located about 415 km (258 mi) from Manila. In the evening of that day, the low pressure was last seen in vicinity of the Zambales area and was absorbed by a frontal system.


2010 Pacific typhoon season, Systems, Unnamed Tropical Depression
The depression brought torrential rains to Mindanao causing slight floods in the area. No casualties were reported. When the depression reached Sulu, it was downgraded to a low-pressure system. However, it still caused heavy rains in Eastern Visayas, Southern Luzon and Manila.


2010 Pacific typhoon season, Systems, Unnamed Tropical Depression
Early on June 2, the JMA reported that an area of low pressure had formed over Hainan island. During the next 36 hours the low-pressure area moved to the east before late on June 3, the JMA reported that the system had intensified into a tropical depression whilst located about 600 km (370 mi) to the northwest of Manila, Philippines. Over the next couple of days, the depression moved to the northwest before the JMA stopped monitoring the system early on June 6.


2010 Pacific typhoon season, Systems, Typhoon Conson (Basyang)
Typhoon Conson, developed into a tropical depression early on July 11 before rapidly developing into the second tropical storm of the season and named as Conson during the next day. During that afternoon Conson, kept intensifying before the JMA reported that Conson had reached its initial ten-minute peak sustained wind speeds of 110 km/h (70 mph), which made it a severe tropical Storm on the JMA's scale.


2010 Pacific typhoon season, Systems, Typhoon Conson (Basyang)
Later that day, the JTWC reported that Conson had intensified into a typhoon before reporting early on July 13 the next day that it had reached its initial one-minute peak sustained wind speeds of 110 km/h (70 mph) which made it a Category 1 typhoon on the Saffir–Simpson hurricane scale. During July 13, Conson started to weaken as it interacted with the Philippines before it made landfall near General Nakar, Quezon. Whilst over the Philippines Conson moved towards the west and passed over Manila before moving into the South China Sea early on July 14.


2010 Pacific typhoon season, Systems, Typhoon Conson (Basyang)
During that day Conson weakened further under the influence of high vertical wind shear before during the next day the vertical wind shear weakened slightly. As a result, Conson intensified over the South China Sea and became a typhoon early on July 16, with the JMA reporting ten-minute peak sustained wind speeds of 130 km/h (80 mph), whilst the JTWC reported peak one minute wind speeds of 150 km/h (95 mph) later that day as it passed closed to Hainan Island. After passing close to Hainan island, Conson moved into an area with high levels of vertical wind shear and as a result it rapidly weakened into a tropical storm, before making landfall in Vietnam during July 17. On July 18 Conson dissipated.


2010 Pacific typhoon season, Systems, Typhoon Conson (Basyang)
On the morning of July 13, DEPED suspended all elementary and preschool classes in Metro Manila and some other provinces. All flights were canceled due to heavy rains and strong winds brought by Conson. Severe flooding was also reported in Bicol Region. In addition, Conson sank three fishing vessels in the province of Catanduanes, Philippines. JTWC's 6:00 bulletin indicated that Conson would be passing through Metro Manila at about 2 or 3 in the morning the following day, which it did.


2010 Pacific typhoon season, Systems, Typhoon Conson (Basyang)
By late evening, Conson began its westerly path towards the direction of Metro Manila. Heavy rains and strong winds battered the Metropolis throughout the night. By 11 pm, PAGASA raised storm warning in the Metro to Signal number two. At 12:42 am, Meralco cut off power supplies to Metro Manila and nearby areas amidst various reports that billboards fell through power lines around the area; as much as 12 million people in Metro Manila alone still have their power services restored by the afternoon.


2010 Pacific typhoon season, Systems, Typhoon Conson (Basyang)
At least twenty-six people were killed, and 38 were left missing in the Philippines as a result of the storm. The province of Laguna was placed under a state of calamity as a result of the storm. An estimated P47 million worth of agricultural products were damaged in the province. On July 16, the National Disaster Coordinating Council has revised the death toll to 38. The power outage also rendered the PAGASA website offline.


2010 Pacific typhoon season, Systems, Typhoon Chanthu (Caloy)
Early on July 17, the JMA reported that a tropical depression had developed about 220 km (140 mi) to the northeast of Manila, Philippines. Later that day the JTWC reported that the depression had a small low level circulation center with deep convection flaring to the northeast of the center. However, as the low level circulation center was located close to land and was not very organized, the JTWC declared that there was a poor chance of it becoming a significant tropical cyclone within 48 hours.


2010 Pacific typhoon season, Systems, Typhoon Chanthu (Caloy)
However, during that day, the depression rapidly consolidated with an anticyclone helping to develop the low level circulation center. As a result, early the next day the JTWC issued a Tropical Cyclone Formation Alert on the depression, however they thought that further development might be hindered as it was located close to land.


2010 Pacific typhoon season, Systems, Typhoon Chanthu (Caloy)
Whilst it moved along the southern edge of the subtropical ridge, the Depression made landfall on Aurora province at 0600 UTC, before the JTWC initiated advisories later that morning, as the low level circulation center had consolidated and poleward outflow into the tropical upper tropospheric trough had improved. Late on July 19, PAGASA issued their last advisory on Tropical Storm Caloy as it had moved out of their Area of Responsibility. Following the system's development, PAGASA stated that rainfall from system could trigger landslides and flooding in Aurora, the Bicol Region, and Quezon. Throughout Aurora, heavy rains triggered flash flooding which destroyed at least one home and stranded hundreds of residents. The Paltic barangay, within Dingalan, became inaccessible to rescuers after the local river topped its banks and washed out nearby slopes.


2010 Pacific typhoon season, Systems, Typhoon Chanthu (Caloy)
In Luzon, heavy rains triggered floods that destroyed at least one house and stranded thousands of people. Eight people were killed in the Philippines. When Chanthu's rain bands passed over Hong Kong, heavy rains brought about serious floodings across the territory. The Black Rainstorm Signal was issued. Two people were drowned and found dead, and two are still missing. In all, 9 people were killed in South China, and total economic losses were counted to be CNY 5.54 billion (US$817.7 million).


2010 Pacific typhoon season, Systems, Unnamed Tropical Depression
Early on July 17, an area of low pressure formed about 415 km (258 mi), southeast of Okinawa, Japan. The next day, the low pressure started to move slowly northwest. On the evening of July 18 at 12:00 (UTC), JMA reported that the low pressure intensified into a minor tropical depression. On the same day, it affected Okinawa. On the next day, the depression continued to move northwest until on early of July 20, the depression was absorbed by frontal system. On that same day, the Japan Meteorological Agency issued their final advisory on the depression.


2010 Pacific typhoon season, Systems, Unnamed Tropical Depression
Early on July 24, the JMA reported that a tropical depression had formed about 50 km (31 mi) to the east of Taipei, Taiwan. The depression was in an area of moderate vertical windshear and had a broad low level circulation. Later the next day on July 25, the depression made landfall in Yilan County before the JMA stopped monitoring the depression as it dissipated near the coast of Fujian province.


2010 Pacific typhoon season, Systems, Tropical Depression
Late on July 26 the JMA reported that a tropical depression had formed off the coast of Zhejiang province, within a monsoonal trough about 400 km (250 mi) to the south of Shanghai China. During the next day the depression remained offshore and moved towards the north passing about 120 km (75 mi) to the southeast of Shanghai before early on July 28 weakening into an area of low pressure. During that day the area of low pressure kept moving north before dissipating later that day as it affected South Korea.


2010 Pacific typhoon season, Systems, Tropical Storm Domeng
Late on August 2, PAGASA reported that a low-pressure area had formed within the Intertropical Convergence Zone about 570 km to the northeast of Virac, Catanduanes. Early the next day PAGASA reported that the low-pressure area had intensified into a tropical depression and named it as Domeng. During that day Domeng interacted with another low-pressure area which was located to the north of the system, before merging with it early on August 4.


2010 Pacific typhoon season, Systems, Tropical Storm Domeng
After Domeng had merged with the low-pressure area, PAGASA reported that Domeng had intensified into a tropical storm and reached its 10-minute peak sustained windspeeds of 65 km/h (40 mph). Later that day PAGASA reported that Domeng had weakened into a tropical depression, before reporting early the next day that after it had passed through the Babuyan Islands, Domeng had weakened into an area of low pressure.


2010 Pacific typhoon season, Systems, Tropical Storm Domeng
In Luzon, heavy rain produced by the storm led to a few landslides, prompting road closures. Offshore, three people drowned after their boat capsized amidst rough seas produced by Domeng.


2010 Pacific typhoon season, Systems, Severe Tropical Storm Dianmu (Ester)
Early on August 6, the JTWC reported that a tropical disturbance formed within the monsoon gyre about 800 km (500 mi) southeast of Taipei, Taiwan. Later that day PAGASA reported that the disturbance had developed into a tropical depression and named it as Ester, before the JTWC issued a Tropical Cyclone Formation Alert early the next day. During that day the JMA started to monitor the depression before the JTWC designated it as Tropical Depression 05W.


2010 Pacific typhoon season, Systems, Severe Tropical Storm Dianmu (Ester)
The depression was then upgraded into a tropical storm by the JMA and named "Dianmu", the mother of lightning in Chinese folklore, with the JTWC following suit soon after. Early the next day, the JMA further upgraded the tropical storm into a severe tropical storm. After moving northward for several days, it turned northeastward and struck southern South Korea. Dianmu weakened as it crossed the Korean peninsula and emerged into the Sea of Japan.


2010 Pacific typhoon season, Systems, Severe Tropical Storm Dianmu (Ester)
Heavy rains produced by the storm killed one people on a cargo ship sank amidst rough seas produced by the storm. In South Korea, at least 5 people were killed by Dianmu in flood-related incidents. This marked the first time in nine years that a rain-related fatality took place in the capital city of Seoul. More than 3,000 homes were destroyed in eastern China after heavy rains from the outer bands of Dianmu struck the region. The storm made landfall on Japan; exiting the country within five hours. Heavy rains were reported throughout the islands.


2010 Pacific typhoon season, Systems, Severe Tropical Storm Dianmu (Ester)
Nearly a week after the two ships sank off the coast of the Philippines, 31 crew members were confirmed dead after numerous coast guard rescue attempts. Damage from the storm on Jeju Island amounted to 5 billion won (US$4.2 million).


2010 Pacific typhoon season, Systems, Tropical Storm Mindulle
Early on August 17, an area of low pressure formed about 415 km (258 mi), northeast of Tuguegarao City. The next day the disturbance started to move west. However, on the evening of August 18, as it crossed Babuyan Islands, the disturbance's low level center (LLC) weakened due to land interaction and high vertical wind shear. It regenerated on August 20 when it was located about 280 km (170 mi), to the west of Dagupan City.


2010 Pacific typhoon season, Systems, Tropical Storm Mindulle
Early on the next day, the disturbance started to move west and located in warm water temperatures and favorable conditions with moderate vertical wind shear. At the same time, the LCC of the disturbance became partially exposed due to a tropical upper tropospheric trough (TUTT) that was developing off Luzon at that time. On the afternoon of that day, Japan Meteorological Agency (JMA) upgraded the system into a tropical depression. The next day, they further upgraded the depression into a tropical storm and named it "Mindulle". At the same time, the JTWC reported that Tropical Depression 06W has intensified into a tropical storm. It became a typhoon and hit vietnam. Due to land reaction, Mindulle rapidly weakened on August 25 and fully dissipated and made their final warning very early on August 26.


2010 Pacific typhoon season, Systems, Tropical Storm Mindulle
As the storm neared Vietnam, thousands of fishermen were urged to return to port. According to Vietnamese officials, contact was lost with 10 vessels on August 24 and the 137 fishermen on the ships were listed as missing. Widespread heavy rainfall, peaking at 297 mm (11.7 in), led to significant flooding and agricultural losses across Vietnam. Across the country, at least 10 people were killed and losses reached ₫850 billion (US$43.3 million).


2010 Pacific typhoon season, Systems, Tropical Depression
The system didn't last long and affected Okinawa. The storm dissipated on August 28.


2010 Pacific typhoon season, Systems, Severe Tropical Storm Lionrock (Florita)
Early on August 25, an area of low pressure formed about 415 km (258 mi) east of Cagayan, Philippines. The low pressure was located in an area of low vertical wind shear and a favorable environment. At the same time, a tropical upper tropospheric trough (TUTT) was located in the east of the system. On the next day, the disturbance started to move west and later crossed the island of Luzon but on the next day, the circulation became slightly disorganized due to dry air.


2010 Pacific typhoon season, Systems, Severe Tropical Storm Lionrock (Florita)
Later that afternoon, the Japan Meteorological Agency (JMA) upgraded the disturbance to a tropical depression and the Joint Typhoon Warning Centre (JTWC) issued a Tropical Cyclone Formation Alert (TCFA) which was later upgraded to a tropical depression. On August 28, the JMA upgraded the system to a tropical storm and it was named "Lionrock". For the next couple of days, Lionrock remained almost stationary in South China Sea. On August 31, Lionrock start to move northeast slowly due to interaction with tropical storm Namtheun.


2010 Pacific typhoon season, Systems, Severe Tropical Storm Lionrock (Florita)
Early on September 1, Lionrock made a Fujiwhara effect with Namtheun, while Lionrock maintained its strength while Namtheun was absorbed. Lionrock made landfall on the east coast of Guangdong Province, China, just north of the city of Shantou. It then started to dissipate and weaken into a tropical storm and moved over Guangzhou, Guangdong's capital. Lionrock soon lost its intensity as it went over Guangdong, and on September 3, the storm had turned into a low-pressure area. Total economic losses in China were counted to be CNY 441 million(US$65.1 million).


2010 Pacific typhoon season, Systems, Typhoon Kompasu (Glenda)
On early August 27, an area of low pressure formed about 305 km (190 mi) to the east of Yap Island. At that time, the system was disorganized due to high vertical wind shear. On the next day, the system started to move northwest and crossed Guam island. On the evening of that day, the system was located about 370 km (230 mi) northwest of Guam. At that time, the system experienced low vertical windshear and was located in a favorable environment. A tropical upper tropospheric trough (TUTT) was located to the east of the system.


2010 Pacific typhoon season, Systems, Typhoon Kompasu (Glenda)
At that time, the Japan Meteorological Agency (JMA) upgraded the system into a tropical depression. Midday of August 29, the Joint Typhoon Warning Centre (JTWC) issued a Tropical Cyclone Formation Alert (TCFA) on the system as the Low Level Circulation Centre had become organized. On the morning of that same day, the JTWC announced that the system had quickly developed into a tropical storm and assigned the designation "08W". Intensification continued, then by midday of August 30, the JMA reported that the depression had intensified into a tropical storm and assigned it the international designation "Kompasu".


2010 Pacific typhoon season, Systems, Typhoon Kompasu (Glenda)
In addition, PAGASA also announced that the low pressure in the northeast of Batanes had formed and assigned it a local name, "Glenda". After six hours, the JMA reported that Kompasu had intensified rapidly into a severe tropical storm. At the same time, the JTWC also upgraded Kompasu into a Category 1 typhoon. On the next day, Kompasu crossed the island of Okinawa and rapidly intensified into a Category 2 typhoon equivalent. On September 1, Kompasu was upgraded by JTWC as a Category 3 typhoon equivalent, becoming the 3rd strongest typhoon of the season at the time.


2010 Pacific typhoon season, Systems, Typhoon Kompasu (Glenda)
The storm later weakened to a Category 1 typhoon in the Yellow Sea, before veering northeast and making landfall on Ganghwa Island, northwest of Incheon and Seoul, killing at least four people. Kompasu was the strongest tropical storm to hit the Seoul metropolitan area in 15 years. Kompasu weakened to a tropical storm over the Sea of Japan on September 2.


2010 Pacific typhoon season, Systems, Tropical Storm Namtheun
On August 27, an extensive cloud formed in the waters east of Taiwan. On August 28, it developed into a low pressure. At 18:00, near Yaeyama Islands, the Japan Meteorological Agency upgraded the low pressure into a tropical depression. There were two tropical cyclones developing on both sides of 09W (namely Lionrock and Kompasu), and Typhoon Kompasu had a relatively stronger intensity, causing 09W moved southwest to Taiwan Strait. This tropical depression lingered in the east of Taiwan for over a day. On August 30, it caused heavy rain in northern Taiwan.


2010 Pacific typhoon season, Systems, Tropical Storm Namtheun
Taiwan's Central Weather Bureau could only issue a tropical depression warning since it had not strengthened to a tropical storm. At 20:00, 09W suddenly intensified into a tropical storm, and was named Namtheun. However, due to the development of another stronger tropical storm Lionrock at South China Sea, the increase of intensity of Namtheun was difficult. In the evening hours of August 31, Namtheun weakened into a tropical depression north of Taiwan Strait, then continued to move south to southwest, and skirted the southern coast of Fujian province. It continued to weaken, and finally transformed into a low pressure along the coast of Huian, Guangdong. Early of September 1, Lionrock made a Fujiwhara effect with Namtheun, whilst Lionrock maintained its strength while Namtheun was absorbed by Lionrock and fully dissipated early on 1 September.


2010 Pacific typhoon season, Systems, Tropical Depression
Late on August 28, the Central Pacific Hurricane Center reported that an area of low pressure associated with a tropical disturbance had developed about 1,000 mi (1,600 km) to the southwest of Honolulu in Hawaii. Isolated thunderstorms were developing in association with the small low-level circulation. During the next day the disturbance moved towards the west and moved into the western Pacific where the JMA immediately designated it as a tropical depression. The depression was expected to bring inclement weather to Majuro and nearby atolls, although the system significantly weakened before reaching the area. The depression dissipated completely very late on August 31.


2010 Pacific typhoon season, Systems, Severe Tropical Storm Malou (Henry)
Malou started out as a tropical depression wandering around the Western Pacific. It moved into the Philippine Area of Responsibility and was given the name Henry. It remained for a depression for two days before it strengthened into a tropical storm and was given the name Malou. Malou drifted over the Okinawa Islands and became a severe tropical storm. After passing through the Okinawa Islands, Malou was expected to make a landfall on Jeju Island; instead, it turned northeast and landed on Tsushima Island as a tropical storm on September 7.


2010 Pacific typhoon season, Systems, Severe Tropical Storm Malou (Henry)
It then moved along the coast of Honshū and made another landfall near Tsuruga, Fukui Prefecture, Japan on September 8. After the second landfall, Malou weakened into a tropical depression over Shizuoka Prefecture. Nevertheless, it lingered over Kantō region and caused heavy rain in Greater Tokyo Area until it transitioned into a polar low on September 10.


2010 Pacific typhoon season, Systems, Severe Tropical Storm Malou (Henry)
Off the northeastern coast of China, an oil rig was knocked on a 45 degree angle by large waves produced by Tropical Storm Malou. The severe tilting sent 32 workers overboard, although 30 of them were quickly rescued. In Japan, Malou produced record heavy rains, exceeding 100 mm (3.9 in) per hour, resulting in severe flash flooding. Several rivers burst their banks and inundated nearby areas. A few bridges were destroyed; however, no loss of life took place. The rains also brought an end to one of the hottest and longest heat waves in Japanese history. Southwest of Tokyo, roughly 10,000 people were advised to evacuate their homes due to the threat of dangerous flash floods and landslides.


2010 Pacific typhoon season, Systems, Severe Tropical Storm Meranti
Early on September 6, the JMA reported that a tropical depression had formed about 330 km (210 mi) to the southeast of Taipei, Taiwan. Later that day the JTWC started to monitor the system and reported that the depression, had an unorganized low level circulation center that had convection flaring over it and was located in a favorable environment of decreasing vertical windshear and high sea surface temperatures. During the next day as the depression moved towards Taiwan the system became better organized with a Tropical Cyclone Formation Alert issued later that day.


2010 Pacific typhoon season, Systems, Severe Tropical Storm Meranti
In the morning of September 9, JMA upgraded the cyclone into a tropical storm, and it was named Meranti. After Meranti was upgraded into a tropical storm, it continued to move northward into Taiwan Strait. In the early hours of September 10, Meranti made a landfall at Shishi City, Quanzhou, Fujian Province, China. It continued to move north toward inland Fujian. In the evening of September 10, the JMA downgraded Meranti into a tropical depression.


2010 Pacific typhoon season, Systems, Severe Tropical Storm Meranti
In Hong Kong, a violent thunderstorm associated with Meranti produced a record 13,102 strikes of lightning in one hour. Several skyscrapers were struck by lightning, resulting in five incidents of people becoming trapped in stalled-out elevators. Torrential rains, exceeding 40 mm (1.6 in) per hour triggered flash flooding and wind gusts up to 100 km/h (62 mph) were recorded.


2010 Pacific typhoon season, Systems, Severe Tropical Storm Meranti
In post-storm analysis, the JMA upgraded Meranti into a severe tropical storm. In East China, a total of 3 people were killed and total economic losses were counted to be CNY 800.3 million(US$118.125 million).


2010 Pacific typhoon season, Systems, Typhoon Fanapi (Inday)
Late on September 14, the JMA reported that a tropical depression had formed southeast of Taiwan, and the JTWC soon designated it as 12W with the PAGASA naming it Inday shortly thereafter. Later that day, both the JMA and the JTWC upgraded the system to a tropical storm and named it Fanapi. On September 16, the storm intensified into a typhoon and turned northwest. On September 18, Fanapi further intensified to a category 3 typhoon and moved straight into Taiwan. It made landfall over Hualien County early on September 19.


2010 Pacific typhoon season, Systems, Typhoon Fanapi (Inday)
Because of land interaction, Fanapi moved southwest, again turned west and weakened into a severe tropical storm. After staying inland for about nine hours, Fanapi moved to the Taiwan Strait and made its second landfall over Zhangpu in Fujian, China. Late on September 20, Fanapi weakened into a tropical depression over Guangdong, China, and it dissipated completely on the next day.


2010 Pacific typhoon season, Systems, Typhoon Malakas
On September 20, the JTWC had reported that a Tropical Depression had formed and designated it with 13W. Later on the same day, the depression strengthened slightly. The next day, JMA started monitoring the depression while the JTWC upgraded it into a Tropical Storm. Later on the same day, the JMA further upgraded it into a tropical storm naming it "Malakas". On September 22, the storm strengthened further and moved towards the Japanese Islands. The next day, the storm intensified into a Severe tropical storm. The JTWC directly upgraded the storm into a Typhoon that time.


2010 Pacific typhoon season, Systems, Typhoon Malakas
Later on that day, the JTWC reported that the Typhoon weakened to a tropical storm unexpectedly. By the next day, the storm reintensified into a Category 1 typhoon and further intensified into a Category 2 typhoon on the SSHS. The JMA also reported that the system had intensified into a Typhoon. By the next day, the JTWC reported that the storm had weakened into a Category 1 typhoon issuing its final warning while the JMA announced the storms closest approach to Japan. The system later transitioned into a powerful extratropical cyclone on September 25, which stalled near Alaska for a few days, until it was absorbed by a larger extratropical storm on October 1.


2010 Pacific typhoon season, Systems, Tropical Depression 14W
On October 5, the JTWC reported that a tropical depression had formed from a low pressure in the South China Sea. The depression made landfall without any warnings, no damage or deaths have been reported in that day. The depression maintained full strength and didn't weaken as it moved farther inland. However, as it approached South China on October 6, the depression began weakening and the final warning was issued for the system. The system continued to weaken as it made landfall on South China on October 7, and moved back over the South China Sea.


2010 Pacific typhoon season, Systems, Tropical Depression 14W
Later on the same day, the depression degenerated to the remnant low. The system continued to drift in the South China Sea for the 4 days. During this time, the remnant low regenerated slightly, but didn't restrengthen into a tropical depression, and the system dissipated on October 11 near Hong Kong.


2010 Pacific typhoon season, Systems, Tropical Depression
The JMA had briefly monitored a weak tropical depression several miles to the east of Japan on October 7. The system dissipated the next day as it was absorbed by a stationary front.


2010 Pacific typhoon season, Systems, Typhoon Megi (Juan)
Late on October 12, JMA reported that a tropical depression formed west of Guam. During October 13, JTWC designated the tropical depression as 15W. Later that day, the system intensified into a tropical storm named Megi by JMA. On October 14, JTWC upgraded it to a typhoon, so did JMA on the next day. Later, PAGASA began to issue advisories on Megi and named it Juan. Early on October 17, JTWC upgraded Megi to a Category 5 super typhoon— the only super typhoon in 2010 and the first since Nida in 2009. According to RSMC Best Track Data, Megi attained peak intensity at 18Z and 00Z. Megi made landfall over Luzon early on October 18.


2010 Pacific typhoon season, Systems, Typhoon Megi (Juan)
By passing Luzon and reaching the South China Sea, Megi significantly weakened on October 18 and 19. Because of low vertical wind shear and good radial outflow, the typhoon intensified again on October 20 and reached its second peak intensity on October 21. Due to subsidence and increasing vertical wind shear, Megi began to weaken on October 22. Megi made landfall over Zhangpu in Fujian, China and weakened to a tropical storm on October 23. Later that day, Megi further weakened to a tropical depression before dissipating completely on October 24.


2010 Pacific typhoon season, Systems, Typhoon Chaba (Katring)
Early on October 20, the Japan Meteorological Agency (JMA) upgraded an area of low pressure into a tropical depression. Later that day, the JMA reported that the tropical depression slightly intensified. The next day, the Joint Typhoon Warning Center started monitoring the system as tropical depression 16W. On October 23, the system entered the Philippine Area of responsibility and the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) started monitoring the system as Tropical Depression "Katring" On October 24, the JMA and JTWC upgraded the tropical depression into a tropical storm and the JMA named it "Chaba".


2010 Pacific typhoon season, Systems, Typhoon Chaba (Katring)
On October 25, the JMA further upgraded the storm into a Severe Tropical Storm. Later that day, the JTWC upgraded the storm into a Category 1 Typhoon. Early on October 26, the JMA further upgraded the storm into a Typhoon. Early on October 27, the JTWC upgraded the typhoon into a Category 2 Typhoon. The following day the JTWC upgraded the system into a Category 4 Typhoon, but soon after weakened back to a Category 3.


2010 Pacific typhoon season, Systems, Typhoon Chaba (Katring)
Late on October 29, the JMA had downgraded the typhoon into a Severe Tropical Storm while the JTWC downgraded it into a Category 1 Typhoon. Early on October 30, the JTWC reported that Chaba had transitioned into an extratropical cyclone. During the afternoon of October 30, the JMA downgraded Chaba to a remnant low as passed near Japan. The remnants of Chaba continued to weaken rapidly as it slowly moved northwest, until it dissipated completely on October 31.


2010 Pacific typhoon season, Systems, Tropical Depression 17W
Early on October 20, the Japan Meteorological Agency (JMA) upgraded an area of low pressure into a tropical depression. Late on the next day, the Joint Typhoon Warning Center (JTWC) identified the same system as Tropical Depression 17W. On October 23, the JTWC downgraded the depression into a remnant low. Early on October 26, the JMA issued their final advisory on the depression. However early, the next day the JMA reported that the system had re-intensified into a tropical depression and reissuing advisories on it, whilst it was located about 1400 km to the southwest of Chiba, Japan. However, later that day, the depression to a remnant low, with the JMA issuing their final advisory on the system. The remnants of the depression dissipated completely early on October 28.


2010 Pacific typhoon season, Systems, Tropical Depression
On November 3, the JMA reported that a tropical depression had developed within an area of moderate vertical windshear, about 500 km (310 mi) to the northeast of Ho Chi Minh City in Southern Vietnam. During that day the depression moved westwards as its low level circulation center gradually consolidated further, before the JTWC issued a Tropical Cyclone Formation Alert on the system.


2010 Pacific typhoon season, Systems, Tropical Depression 18W
On November 10, an area of low pressure associated with a monsoon trough formed in the central South China Sea. On November 11, the low-pressure area became a strong tropical disturbance wave. During the next day, the Japan Meteorological Agency (JMA) reported that the system had intensified into a Tropical Depression. Later that day, JTWC issued Tropical Cyclone Formation Alert for system, and eventually, it was numbered Tropical Depression 18W. It made landfall south of Da Nang, Vietnam on November 14, and it dissipated later in the day.


2010 Pacific typhoon season, Systems, Tropical Depression 19W
On December 11, an area of low pressure associated with a monsoon trough formed in the south of South China Sea. Later that day, the low-pressure area became a strong tropical disturbance wave. During the next day, the Joint Typhoon Warning Center (JTWC) reported that the system had intensified into Tropical Depression 19W, while the JMA upgraded the system to a tropical depression. On December 13, JTWC and the JMA both issued their last advisory on Tropical Depression 19W, as it dissipated completely over the northwestern part of the South China Sea, without impacting any major land masses.


2010 Pacific typhoon season, Systems, Tropical Depression Omeka
On December 18 the CPHC initiated special weather outlooks for a subtropical depression located near the International Date Line. The system soon crossed this line, and the next day JMA classified it as a Tropical Depression, about 2,600 km (1,615 mi) to the west of Hilo, Hawaii. Although the JTWC has not issued an advisory on the system, they noted that it was a subtropical cyclone with sustained winds of at least 85 km/h (55 mph) and had a pressure of 990 mbar (hPa). However, there is a disagreement between warning centers on the nature of the system.


2010 Pacific typhoon season, Systems, Tropical Depression Omeka
While west of the dateline, the CPHC referred to the system as a tropical cyclone while the JTWC considered it a subtropical disturbance. Early on December 20, the JTWC issued its last significant tropical weather outlook on Tropical Depression 01C, as it crossed back over the International Date Line, back over the Central Pacific basin, passing on the authority of monitoring the system over to the CPHC. During the storm's time in the Central Pacific, it was known as Tropical Storm Omeka.