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Tropical Storm Bill (2003)
Tropical Storm Bill was a tropical storm that affected the Gulf Coast of the United States in the summer of 2003. The second storm of the 2003 Atlantic hurricane season, Bill developed from a tropical wave on June 29 to the north of the Yucatán Peninsula. It slowly organized as it moved northward, and reached a peak of 60 mph (95 km/h) shortly before making landfall in south-central Louisiana. Bill quickly weakened over land, and as it accelerated to the northeast, moisture from the storm, combined with cold air from an approaching cold front, produced an outbreak of 34 tornadoes. Bill became extratropical on July 2, and was absorbed by the cold front later that day.
Upon making landfall on Louisiana, the storm produced a moderate storm surge, causing tidal flooding. In a city in the northeastern portion of the state, the surge breached a levee, which flooded many homes in the town. Moderate winds combined with wet soil knocked down trees, which then hit a few houses and power lines, and left hundreds of thousands without electric power. Two people drowned from rough surf in Florida. Further inland, tornadoes from the storm produced localized moderate damage. Throughout its path, Tropical Storm Bill caused around $50 million in damage (2003 USD, $ USD) and four deaths.
== Meteorological history ==
A tropical wave developed scattered convection in the central Caribbean Sea on June 24, while interacting with an upper-level low. It moved slowly northwestward, and remained disorganized due to strong upper level wind shear. Late on June 27, the convection became slightly better organized around a broad low pressure area, though land interaction prevented further development as it moved towards the Yucatán Peninsula. The area of low pressure became better defined over the central Yucatán Peninsula, and after the system turned to the northwest, convection quickly organized while located over the warm waters of the Gulf of Mexico. On June 29, following the development of a closed circulation, the system organized into Tropical Depression Three while located about 40 miles (60 km) north of Progreso, Yucatán.
The depression quickly strengthened to become Tropical Storm Bill later on June 29. Operationally, the National Hurricane Center did not begin issuing advisories until it attained tropical storm status.〔 Initially, the system resembled a subtropical cyclone, with the strongest winds and deep convection located far from the center, though it was classified tropical due to its tropical origins. The storm steadily intensified as wind shear decreased,〔 and early forecasts from the National Hurricane Center mentioned the possibility of Bill intensifying to hurricane status if the low level circulation organized beneath the area of deepest convection. Bill turned to the north-northwest, and later to the north, as it moved around the periphery of a ridge of high pressure. On June 30, Tropical Storm Bill reached a peak intensity of 60 mph (95 km/h), one hour before making landfall in southwestern Terrebonne Parish, Louisiana. It moved onshore at peak intensity, and quickly weakened to a depression over land as it accelerated to the northeast. Bill remained a tropical cyclone as it moved through the southeast United States,〔 until it became attached to an approaching cold front on July 2 near the Tennessee/Virginia border. The remnant extratropical storm was absorbed by the cold front on July 3 near central Virginia,〔 while the remnant low pressure area continued northeastward until reaching the Atlantic Ocean later on July 3.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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