Given the task definition and input, reply with output. In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.

The day of June 26 was a scorcher in the town of Quriyat, Oman. Temperatures in the town, which is weathering a miserable heat wave, peaked at 121.6 degrees Fahrenheit (49.8 degrees Celsius) during the day, according to Weather Underground. That's just shy of the Omani record-high temperature of 123.4 degrees F (50.8 degrees C), set on May 30, 2017. But anyone in Quriyat hoping for an evening respite from the extreme heat would have been disappointed: Temperatures fell to a low of just 108.7 degrees F (42.6 degrees C). That's a world record: the highest "low" temperature ever recorded in history. 
  
 Oman, a hot and dry country located on the southeastern tip of the Arabian Peninsula (south of Saudi Arabia and east of Yemen) is a frequent site for ultrahot weather, including the last record-high low; Weather Underground reports that record, 107.4 degrees F (41.9 degrees C), was set at Khasab Airport on June 27, 2011. 
  
 The new record, Weather Underground reported, is the result of a "ridge" of high-pressure air in the upper atmosphere over the Arabian Peninsula, which trapped humid air from the Indian Ocean in the region, preventing heat from escaping at night. 
  
 The hottest temperature ever recorded on the Earth's surface was 134 degrees F (56.7 degrees C), in Furnace Creek Ranch in Death Valley, California, on July 10, 1913, according to the World Meteorological Association. 
  
 Originally published on Live Science. ||||| Dr. Jeff Masters · 
  
 Above: MODIS satellite image from June 26, 2018 shows clear weather over Oman on the day the 24-hour world high-minimum temperature record was set at Quriyat, Oman. Image credit: NASA. 
  
 You may think it’s been hot where you are, but the coastal city of Quriyat (Qurayyat) in the Middle Eastern nation of Oman established a singularly unenviable heat mark on Tuesday: a 24-hour low temperature of 42.6°C (108.7°F), including the period from local midnight to midnight. According to weather records expert Maximiliano Herrera, this sets a new world record for the hottest 24-hour-minimum temperature ever recorded. Herrera says that the previous high-minimum temperature record for any 24-hour period was 41.9°C (107.4°F), set at nearby Khassab Airport in Oman on June 27, 2011. That location also holds the world record for the highest overnight (12-hour) high-minimum temperature: 44.2°C (111.6°F) on June 17, 2017. (Note that the World Meteorological Organization does not maintain world record statistics for highest minimum temperature.) 
  
 Figure 1. Bicyclists from Austria, Belgium and France ride during the third stage of the Tour of Oman between the German University of Technology and Wadi Dayqah Dam in the Quriyat area on February 15, 2018. Morning temperatures were surely more comfortable on that day than they were this week! Image credit: Philippe LopezAFP/Getty Images. 
  
 The hot weather has been caused by a strong upper-level ridge of high pressure that settled in over the Arabian Peninsula beginning on Sunday. Quriyat’s location on the coast of the Gulf of Oman in the Northern Indian Ocean means that humid marine air keeps the city from cooling off much at night. With sea surface temperatures in the Gulf of Oman at 32°C (90°F), about 1°C (1.8°F) above average for this time of year, these waters were warm enough to allow the city to set the new all-time high minimum temperature record. A listing of the raw 3-hourly synoptic station reports from Quriyat shows that the city remained above 41.9°C (107.4°F) for an incredible 51 straight hours, from 6 UTC June 25 through 9 UTC June 27. The maximum temperature peaked at 49.8°C (121.6°F) on Tuesday, falling a degree short of the all-time heat record for Oman of 50.8°C (123.4°F), set at two locations in Oman last year, at Quriyat on May 30 and at Joba on May 31 (and also at two other locations in 2009 and 1990). Joba, Oman fell just short of tying this record on Wednesday: the high temperature hit 50.6°C. This was, however, the hottest temperature ever recorded in June for Oman (previous June record: 50.4°C on June 26, 2017 at Joba). 
  
 In addition to Maximiliano Herrera, thanks go to Michael Theusner of Klimahaus and Jérôme Reynaud of GÉOCLIMAT for alerting me to this event. WU weather historian Christopher Burt has an excellent post from 2016 on the hottest minimum temperatures measured globally up to that point. ||||| Why it matters: The heat and humidity will combine to create life-threatening conditions in many cities, particularly in the Midwest and Northeast, where heat advisories and excessive heat warnings are in effect. 
  
 July is typically the hottest month of the year, for both the U.S. and the planet as a whole. However, this year it is going to start off particularly hot across the country, as a dangerous heat wave stretches from Arizona to Maine. 
  
 The cause: A sprawling and unusually intense area of high pressure aloft, also known as a "heat dome," will promote sinking air and sunny, storm-free conditions for areas under its influence. 
  
 At the peak of the heat wave between July 1 and the Fourth of July holiday, more than 50% of the lower 48 states are forecast to see high temperatures exceeding 90 degrees Fahrenheit. 
  
 The sweaty details: Some cities, including Kansas City, St. Louis, Chicago, Detroit, New York City, Philadelphia, Washington, and Nashville, could all see temperatures reach or exceed 100 degrees Fahrenheit, which is about 10 to 20 degrees above average for this time of year. 
  
 Forecast maximum heat index for July 2, 2018. Credit: NOAA 
  
 In the Northeast, the hottest day is forecast on Sunday, July 1. Even parts of Canada could see temperatures flirt with the century mark that day. 
  
 The high humidity will make it feel even hotter, with heat indices above 105 degrees Fahrenheit in some places. 
  
 Be smart: The heat will be sufficient to break at least daily record highs, as well as set records for the warmest overnight low temperatures. Denver already tied its all-time high temperature record of 105 degrees Fahrenheit on Thursday. 
  
 This extreme weather event will also be more noteworthy for its geographical scope and long duration than for its intensity — some locations will see seven-to-10 days straight of 90-degree or above conditions. 
  
 The big picture: Climate scientists have shown in multiple peer reviewed studies that heat waves are already becoming more likely and more intense across the globe as the overall climate warms due to rising amounts of greenhouse gases in the air. 
  
 Go deeper: 
  
 Sign up for our Axios Science newsletter here. ||||| On 13 September 2012 the World Meteorological Organisation disqualified the record for the highest recorded temperature, exactly 90 years after it had been established at El Azizia, Libya, with a measurement of 58°C. The official highest recorded temperature is now 56.7°C (134°F), which was measured on 10 July 1913 at Greenland Ranch, Death Valley, California, USA. 
  
 *** 
  
 As a result of an investigation in 2012, the WMO concluded that the El Azizia record measurement could be inaccurate by as much as 7°C due to a combination of factors including the asphalt-like surface over which the measurement was taken, which is not a fair representation of the native desert soil. 
  
 Randy Cerveny, a member of the WMO and professor of geography at Arizona State University, commented in 2012: "This investigation demonstrates that, because of continued improvements in meteorology and climatology, climate experts can now re-analyze past weather records in much more detail than ever before." 
  
 He added: "We accept that Death Valley temperature extreme record. Obviously if any new materials on it surface, we will be prepared to open an investigation, but at this time all available evidence points to its legitimacy." 
  
 The air temperature of the aptly named Furnace Creek in Death Valley reaches a staggering average daily high of 115°F - making Death Valley the hottest place on Earth. 
  
 It gets even hotter on the ground: a measurement of 201°F was taken on July 15 1972 - just 11 degrees away from the boiling point of water. 
  
 One of the reasons Death Valley has the hottest temperature ever recorded is because it is approximately 190 ft below the sea level, and air warms as it gets lower. 
  
 In addition to this, there is less than three inches of rain in the desert valley each year. |||||

A dangerous heat wave is expected to envelop much of the US over the next few days, but residents in Quriyat, Oman, probably won't have much sympathy. That's because it's so hot there that a new world record was set Tuesday: Per Weather Underground, the city registered a 24-hour low temperature of 108.7 degrees Fahrenheit, the highest temp in that category ever. A weather expert says the previous record for highest minimum temperature in a 24-hour period was also in Oman, on June 27, 2011, at Khasab Airport, which saw a 107.4-degree reading. Live Science notes the daytime temperature on Tuesday in Quriyat was even more brutal, reaching a high of 121.6 degrees. The hottest temperature ever recorded on Earth was 134 degrees, measured in Death Valley, Calif., on July 10, 1913.