| 翻訳と辞書 |
| 1949 Florida hurricane ： ウィキペディア英語版 |
1949 Florida hurricane
The 1949 Florida hurricane was the second recorded storm and the strongest and most intense tropical cyclone of the 1949 Atlantic hurricane season. It was the most intense tropical cyclone to affect the United States during the season, with a minimum central pressure of 954 mbar (28.18 inHg) at landfall. The cyclone originated from an easterly wave near the Leeward Islands, and it rapidly intensified to a hurricane near the Bahamas. It strengthened to a major hurricane northwest of Nassau, Bahamas, and it struck West Palm Beach, Florida as a Category 4 hurricane with maximum sustained winds near 130 mph (210 km/h)〔 and peak gusts near 160 mph (260 km/h) above the surface.〔 It turned north over the Florida peninsula, and it transitioned to an extratropical low pressure area over New England. The tropical cyclone inflicted $52,000,000 (1949 USD) in damage, most of which was incurred in the state of Florida. It was the costliest storm of the season.〔
==Meteorological history==
On August 23, a moderate tropical storm developed 200 miles (323 km) east of Sint Maarten. Operationally, the system was treated as an easterly wave until it moved through the Bahamas.〔 It is believed that the system originated near the Cape Verde islands.〔Barnes, p. 183〕 On August 24, the tropical storm passed north of the Leeward Islands and San Juan, Puerto Rico, and then strengthened to a minimal hurricane with 75 mph (120 km/h) winds on August 25. Subsequently, it strengthened rapidly, and the cyclone was noted as "well developed" when it passed near Nassau〔 with 115 mph (185 km/h) winds on the morning of August 26.〔 At the time, it was the equivalent of a Category 3 hurricane on the Saffir-Simpson Hurricane Scale. The storm strengthened further over the Gulf Stream, and it moved ashore over the city of West Palm Beach as a strong Category 4 hurricane around 7:20 p.m. EDT.〔〔 The city's airport reported calm conditions from 7:20–7:40 p.m., and the minimum central pressure of 954 mbar (28.18 inHg) was measured at the site. Peak gusts were recorded at 125 mph (205 km/h) before the anemometer blew away.〔 A maximum sustained wind of 153 mph (246 km/h) was reported from the Jupiter Inlet Light station prior to the loss of the anemometer; although conditions were slightly more severe after the reading, reliable estimates are unavailable.〔 The Atlantic hurricane database lists the cyclone as a strong Category 4 hurricane at landfall.〔 The wind reading is the basis for the Category 4 designation in the Atlantic hurricane database, although a reduction from the anemometer's elevated location lends credence to the concept of a weaker system.〔Norcross, Bryan (2007). ''Hurricane Almanac.'' St. Martin's Griffin.〕 Originally, the system was designated as a Category 3 hurricane in the state of Florida, based on the minimum central pressure reading of 954 mbar (28.18 inHg); this pressure corresponds to the original classification of a Category 3 hurricane on the Saffir-Simpson Hurricane Scale.〔 However, modern analysis applies Saffir-Simpson rankings based on maximum sustained wind speeds. The 1949 Florida hurricane will be eventually reanalyzed by the Atlantic hurricane reanalysis project, which may find a weaker hurricane in Florida. The central pressure of 954 mbar (28.18 inHg) is unusually high for a strong Category 4 hurricane; the reanalysis project has discovered that hurricanes erroneously featured stronger winds than the typical pressure/wind relationship in the 1940s–1960s, unlike subsequent hurricanes in the 1970s–1980s. The evidence suggests wind speeds may have been overestimated for hurricanes in the 1940s–1960s.〔
Inland, the hurricane moved over the northern portion of Lake Okeechobee,〔 following a similar path as the 1928 Okeechobee hurricane.〔 On August 27, the hurricane recurved over the Florida peninsula, and then weakened to a Category 1 hurricane northeast of Tampa. The system diminished to a tropical storm near Cedar Key, and it entered southern Georgia during the morning of August 28.〔 The system passed over the Carolinas as a weak tropical storm,〔 and it was operationally noted as a "weak disturbance" at the time.〔 The cyclone passed through the Mid-Atlantic states and New England on August 29; it became extratropical over New Hampshire. On August 31, the extratropical low was last detected over the western North Atlantic Ocean.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「1949 Florida hurricane」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|