![]() ![]() 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. Sea surface temperatures in Hurricane Irma's path from September 3–6. With warm sea surface temperatures and low wind shear, strengthening was anticipated, with the only hindrance being slightly cooler waters and drier air. Six hours later, the depression intensified into Tropical Storm Irma, based on scatterometer data and satellite estimates. Around 00:00 UTC on the following day, the system developed into a tropical depression just west of the Cape Verde Islands. Throughout the next two days, showers and thunderstorms associated with the wave became better organized and gradually coalesced into a low-pressure area, as the system passed just south of and then through the Cape Verde Islands on August 29. The tropical wave moved off the coast of the continent late on August 27. The National Hurricane Center (NHC) began monitoring a tropical wave over western Africa on August 26. Meteorological historyĮxtratropical cyclone, remnant low, tropical disturbance, or monsoon depression Hurricane Irma was the top Google searched term in the U.S. The hurricane caused at least 134 deaths: one in Anguilla one in Barbados three in Barbuda four in the British Virgin Islands 10 in Cuba 11 in the French West Indies one in Haiti three in Puerto Rico four on the Dutch side of Sint Maarten 92 in the contiguous United States, and four in the U.S. ![]() The storm caused catastrophic damage in Barbuda, Saint Barthélemy, Saint Martin, Anguilla, and the Virgin Islands as a Category 5 hurricane. The system degraded into a remnant low over Alabama and ultimately dissipated on September 13 over Missouri. Irma then weakened to Category 3 status, prior to another landfall in Florida on Marco Island later that day. Although Irma briefly weakened to a Category 2 storm while making landfall on Cuba, the system re-intensified to Category 4 status as it crossed the warm waters of the Straits of Florida, before making landfall on Cudjoe Key on September 10. Another eyewall replacement cycle caused Irma to weaken back to a Category 4 hurricane, but the storm re-attained Category 5 status before making landfall in Cuba. Irma was the second-most intense tropical cyclone worldwide in 2017 in terms of barometric pressure, and the strongest worldwide in 2017 in terms of wind speed. Early on September 6, Irma peaked with 1-minute sustained winds of 180 mph (290 km/h) and a minimum pressure of 914 hPa (27.0 inHg). On September 4, Irma resumed intensifying, becoming a Category 5 hurricane by early on the next day. The storm's intensity fluctuated between Categories 2 and 3 for the next several days, due to a series of eyewall replacement cycles. Favorable conditions allowed Irma to rapidly intensify into a Category 3 hurricane on the Saffir–Simpson wind scale by late on August 31. Irma developed from a tropical wave near the Cape Verde Islands on August 30. The word Irmageddon was coined soon after the hurricane to describe the damage caused by the hurricane. It was also the most intense hurricane to strike the continental United States since Katrina in 2005, the first major hurricane to make landfall in Florida since Wilma in the same year, and the first Category 4 hurricane to strike the state since Charley in 2004. The ninth named storm, fourth hurricane, second major hurricane, and first Category 5 hurricane of the 2017 season, Irma caused widespread and catastrophic damage throughout its long lifetime, particularly in the northeastern Caribbean and the Florida Keys. It was also the third-strongest Atlantic hurricane at landfall ever recorded, just behind the 1935 Labor Day Hurricane and Dorian. At the time, it was considered the most powerful hurricane on record in the open Atlantic region, outside of the Caribbean Sea and Gulf of Mexico, until it was surpassed by Hurricane Dorian two years later. Irma was the first Category 5 hurricane to strike the Leeward Islands on record, followed by Maria two weeks later. Hurricane Irma was an extremely powerful Cape Verde hurricane that caused widespread destruction across its path in September 2017. Part of the 2017 Atlantic hurricane season Hurricane Irma near peak intensity approaching the Leeward Islands on September 5Ĭape Verde, Leeward Islands (especially Barbuda, Saint Barthélemy, Anguilla, Saint Martin and the Virgin Islands), Greater Antilles ( Cuba and Puerto Rico), Turks and Caicos Islands, Jamaica, The Bahamas, Eastern United States (especially Florida)
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