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Effects of Hurricane Isaac in Florida
The Effects of Hurricane Isaac in Florida were severe local flooding in South Florida and tornadoes in the central and northern portions of the state in August 2012. Hurricane Isaac formed from a tropical wave while located east of the Lesser Antilles on August 21, 2012. The storm moved westward, crossed through the Leeward Islands, and entered the Caribbean Sea on August 22. Isaac initially struggled to intensify and defied predictions of it strengthening into a hurricane]. The storm made its first landfall in Haiti as a midgrade tropical storm prior to making a second one in Cuba later that day. It remained somewhat disorganized while moving through the Straits of Florida and passed near the Florida Keys on August 27. The storm threatened to strike the Tampa Bay Area during the 2012 Republican National Convention and move ashore in the Florida Panhandle as a major hurricane. However, it continued northwestward and avoided landfall in the state. The storm finally became a hurricane late on August 28. Isaac made two landfalls in Louisiana on August 29, the first near the mouth of the Mississippi River and the other near Port Fourchon. The storm steadily weakened and eventually dissipated over Missouri on September 1.
Despite passing closest to the Florida Keys, impact was minimal, limited to tropical storm-force winds and light rainfall. The outerbands of Isaac produced heavy precipitation further north, especially in Palm Beach, St. Lucie and Indian River counties. In the former, the resultant flooding left numerous residents in Royal Palm Beach and Loxahatchee isolated. There was extensive street flooding, and water entered a few houses. Damage in Palm Beach County alone was nearly $71.6 million (2012 USD). Inland flooding was also reported in several other counties, though losses were generally minor. A tornado in Indian River County damaged 118 mobile homes and 15 single family homes. Further north in Central Florida and the Panhandle, the storm spawned four other tornadoes. Tides along the Gulf Coast of Florida caused erosion and coastal flooding in Bay, Collier, Franklin, Gulf, and Wakulla counties. Though winds caused little damage, around 113,000 customers were left without electricity in South Florida. The storm resulted in two indirect fatalities, both caused by vehicles driving on slick roads in Palm Beach and Okeechobee counties. Throughout the state, damage reached approximately $91.45 million.
==Background==
(詳細はlow-pressure area initially did not have a well-defined center until three days later. Convection associated with the system organized and intensified, and the tropical wave quickly strengthened into a tropical depression. In favorable conditions, the depression was upgraded to Tropical Storm Isaac by the National Hurricane Center (NHC) on August 21. Quickly accelerating westward due to a subtropical ridge located to the northwest, Isaac later moved past the Lesser Antilles between Guadeloupe and Dominica by August 23, where it caused numerous mudslides and power outages. Maintaining tropical storm intensity, Isaac later made its first landfall on the southern coast of Haiti early on August 25 as a result of southeast flow. There, the storm directly killed 24 people, worsening conditions still remaining after the 2010 Haiti earthquake.〔
Isaac began to curve northwestward due to its location between a large deep-layer low pressure area in the northwestern Caribbean Sea and a mid-tropospheric ridge over the western Atlantic. After briefly moving into the Gulf of Gonâve, the tropical storm made a second landfall near Cajobabo, Guantánamo, in Cuba at 1500 UTC later on August 25, where damages were comparatively less severe than in Haiti. The storm paralleled the northern coast of the island prior to making a close pass of Key West, Florida, where it caused minor flood damage across the Florida Keys and South Florida upon entry into the Gulf of Mexico. The threat of tropical cyclone impacts in Tampa forced the postponing of the 2012 Republican National Convention. In the gulf, the tropical storm curved to the northwest and attained hurricane strength on August 27 near the southern Louisiana coast. Another ridge of high pressure caused Isaac to move towards the west and slow down as it made two landfalls on the state. Once it moved inland, the hurricane weakened before dissipating over Missouri on September 1.〔
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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