what is the current diameter of hurricane irma
Hurricane Irma The nascent storm began developing upper-level poleward outflow as an anticyclone became established over the system, with banding features becoming increasingly evident in satellite images.[10] Early on August 31, shortly after the development of a central dense overcast (CDO) and an eye feature, Irma rapidly intensified beginning at 09:00 UTC on August 31, with winds increasing from 70 mph (110 km/h) to 115 mph (185 km/h) in only 12 hours.[11] On September 2, a ship passed 60 mi (90 km) to the west of the center of Irma, recording maximum winds of 45 mph (70 km/h), which indicated that the eye of Irma remained compact.[12][13] A strengthening subtropical ridge over the central North Atlantic pushed Irma from a western to southwestern direction on September 2 and 3.[14][15][16][17] The first aircraft reconnaissance mission departed from Barbados on the afternoon of September 3, discovering an eye 29 mi (47 km) in diameter and surface winds of 115 mph (185 km/h).[16][18]
Hurricane Harvey The eighth named storm, third hurricane, and the first major hurricane of the extremely active 2017 Atlantic hurricane season, Harvey developed from a tropical wave to the east of the Lesser Antilles, reaching tropical storm status on August 17. The storm crossed through the Windward Islands on the following day, passing just south of Barbados and later near Saint Vincent. Upon entering the Caribbean Sea, Harvey began to weaken due to moderate wind shear and degenerated into a tropical wave north of Colombia early on August 20. The remnants were monitored for regeneration as it continued west-northwestward across the Caribbean and the Yucatán Peninsula, before redeveloping over the Bay of Campeche on August 23. Harvey then began to rapidly intensify on August 24, regaining tropical storm status and becoming a hurricane later that day. While the storm moved generally northwest, Harvey's intensification phase stalled slightly overnight from August 24–25; however, Harvey soon resumed strengthening and quickly became a major hurricane and attained Category 4 intensity later that day. Hours later, Harvey made landfall near Rockport, Texas, at peak intensity. Afterwards, rapid weakening ensued, and Harvey had downgraded to a tropical storm as it stalled near the coastline of the state, dropping torrential and unprecedented amounts of rainfall over the Lone Star state. On August 28, it emerged back over the Gulf of Mexico, strengthening slightly before making a third and final landfall in Louisiana on August 29. As Harvey drifted inland, it quickly weakened again as it became extratropical on September 1, before dissipating two days later.
Hurricane Irma Irma developed on August 30, 2017 near the Cape Verde Islands, from a tropical wave that had moved off the west African coast three days prior.[2][3][4] Under favorable conditions, Irma rapidly intensified shortly after formation, becoming a Category 2 hurricane on the Saffir–Simpson scale within a mere 24 hours. Irma became a Category 3 hurricane (and therefore a major hurricane) shortly afterward; however, the intensity fluctuated between Categories 2 and 3 for the next several days due to a series of eyewall replacement cycles. On September 4, Irma resumed intensifying, becoming a Category 5 hurricane by early the next day. On September 6, Irma reached its peak intensity with 185 mph (295 km/h) winds and a minimum pressure of 914 hPa (27.0 inHg), making it the second most intense tropical cyclone worldwide so far in 2017, behind only Hurricane Maria, and the strongest worldwide in 2017 in terms of wind speed. Another eyewall replacement cycle caused Irma to weaken back to a Category 4 hurricane, but the storm attained Category 5 status for a second time before making landfall in Cuba. After dropping to Category 3 intensity due to land interaction, the storm re-intensified to Category 4 status as it crossed warm waters between Cuba and Florida, before making landfall on Cudjoe Key with maximum sustained winds at 130 mph (215 km/h). Irma dropped back to Category 3 by the time it made a second Florida landfall on Marco Island. Irma weakened to a Category 2 hurricane later that day, the first time it weakened below major hurricane status in over a week, and eventually dissipated off the coast of New England on September 16.
Hurricane Harvey The eighth named storm, third hurricane, and the first major hurricane of the 2017 Atlantic hurricane season, Harvey developed from a tropical wave to the east of the Lesser Antilles, reaching tropical storm status on August 17. The storm crossed through the Windward Islands on the following day, passing just south of Barbados and later near Saint Vincent. Upon entering the Caribbean Sea, Harvey began to weaken due to moderate wind shear and degenerated into a tropical wave north of Colombia early on August 19. The remnants were monitored for regeneration as it continued west-northwestward across the Caribbean and the Yucatán Peninsula, before redeveloping over the Bay of Campeche on August 23. Harvey then began to rapidly intensify on August 24, regaining tropical storm status and becoming a hurricane later that day. While the storm moved generally northwest, Harvey's intensification phase stalled slightly overnight from August 24–25; however, Harvey soon resumed strengthening and quickly became a major hurricane and attained Category 4 intensity later that day. Hours later, Harvey made landfall near Rockport, Texas, at peak intensity. Afterwards, rapid weakening ensued, and Harvey had downgraded to a tropical storm as it stalled near the coastline of the state, dropping torrential and unprecedented amounts of rainfall over the Lone Star state. On August 28, it emerged back over the Gulf of Mexico, strengthening slightly before making a third and final landfall in Louisiana on August 29. As Harvey drifted inland, it quickly weakened again as it became extratropical on September 1, before dissipating two days later.