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Hurricane Alex was the first named storm, the first hurricane, and the first major hurricane of the 2004 Atlantic hurricane season. The first storm of the season, Alex formed unusually late in the season; the fifth latest since 1954. It developed from the interaction between an upper-level low and a weak surface trough on July 31 to the east of Jacksonville, Florida. It moved northeastward, and strengthened to attain winds of 100 mph (160 km/h) before passing within 10 miles (16 km) of the Outer Banks coast. Alex strengthened further and reached a peak of 120 mph (190 km/h) winds while off the coast of New England, one of only two hurricanes to reach Category 3 status north of 38° N. Alex caused a scare of a hurricane-force direct hit in the Outer Banks of North Carolina, which had been devastated by Hurricane Isabel less than a year earlier. The hurricane produced light damage in the Outer Banks, primarily from flooding and high winds. Over 100 houses were damaged, while numerous cars were disabled from the flooding. Damage totaled about $7.5 million (2004 USD). Alex produced strong waves and rip tides along the East Coast of the United States, causing one death and several injuries. ==Meteorological history== A weak surface trough, located to the west of an upper-level low, developed convection to the east of the Bahamas on July 26. A tropical wave entered the area two days later, resulting in an increase of convective organization and area. Although conditions were not favorable for tropical cyclone formation, it sped to the northwest and steadily organized, developing a surface area of low pressure on the 30th. On July 31, the system continued to organize, and developed into Tropical Depression One while located 200 miles (320 km) to the east of Jacksonville, Florida. As the depression drifted erratically, the system remained weak due to its large circulation and lack of deep convection near the center. The center relocated to the south, closer to the center. An approaching upper-level trough lessened the shear over the system, allowing the depression to intensify into Tropical Storm Alex on August 1. The trough also caused Alex to increase its forward motion to the northeast. Deep convection continued to build over the center due to low shear and warm waters from the Gulf Stream, and Alex intensified into a hurricane on August 3 while located 75 miles (120 km) southeast of Cape Fear, North Carolina. The cyclone continued to strengthen, and attained Category 2 status just hours after becoming a hurricane. The hurricane approached the Outer Banks of North Carolina, coming within 10 miles (16 km) of Cape Hatteras later on the 3rd. The western portion of the eyewall passed over the Outer Banks, though the center remained offshore.〔 Alex turned to the east-northeast after passing the Outer Banks in response to becoming embedded within the west-southwesterly flow. The hurricane briefly weakened to a Category 1,〔 but restrengthened due to warm waters of the Gulf Stream. Water temperatures remained 3.6 °F (2 °C) above normal, resulting in Alex intensifying into a 120 mph (195 km/h) major hurricane on August 5 while located 450 miles (710 km) south of Halifax, Nova Scotia. Due to low vertical shear and favorable conditions, Alex remained a Category 3 hurricane until passing over cooler waters late on the 5th while 290 miles (465 km) south of Newfoundland. Alex rapidly weakened, degrading into tropical storm status on August 6. Later on the 6th, Alex became extratropical while 950 miles (1530 km) east of Cape Race, Newfoundland, and lost its identity shortly thereafter.〔 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「Hurricane Alex (2004)」の詳細全文を読む スポンサード リンク
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