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Hurricane Fern was the sixth named storm and fourth hurricane of the 1971 Atlantic hurricane season. It formed from a tropical wave which interacted with a large trough of low pressure to form Fern, as well as Hurricane Ginger, Tropical Storm Heidi, and a system designated Tropical Depression Eighteen in real-time,〔David M. Roth (2008). (Extended Best Track for CLIQR. ) Retrieved on 2008-10-25.〕 then Tropical Depression Sixteen after the fact,〔 which moved into South Carolina. Fern crossed southeastern Louisiana as a tropical depression on September 4 before swinging back out over the Gulf of Mexico. Fern reached hurricane status on September 8, reaching a peak intensity of 90 mph (140 km/h) before making landfall near Freeport, Texas, two days later. Fern's path was erratic since it made 90° turns three times during its duration, making it difficult for forecasters to track. The second Atlantic tropical cyclone to make U.S. landfall that year, Fern produced heavy rainfall across Louisiana and Texas, causing flash flooding that left 2 indirect fatalities and damage totaling over $30 million (1971 USD, $ USD). ==Meteorological history== A northwestward moving tropical wave moved out the Caribbean Sea on September 1 and became a tropical depression on September 2 after crossing southern Florida. Still moving northwestward, the tropical depression made landfall in southeastern Louisiana on September 4. A building high pressure system over the Central United States forced the tropical depression to move southwest over the Gulf of Mexico. The warm waters then cause the depression to reach tropical storm strength and the storm was given the name ''Fern'' by the National Hurricane Center on September 7.〔 The following day, Fern reached hurricane status as it neared the Texas coastline. The hurricane reached a peak intensity of 90 mph (140 km/h) and its barometric pressure dropped to 979 millibars. An incoming mid-latitude trough caused Fern to stall east of Texas for twelve hours. After the trough moved by, Fern turned southwest, paralleling the Texas coastline before making landfall on September 10 between Freeport and Matagorda.〔 At landfall, Fern had weakened to a strong tropical storm as it moved further inland. Because the center of Fern was elongated, it was still able to receive moisture from the Gulf of Mexico and as a result, weakening was slow. Between September 10 and September 11, Fern bypassed Corpus Christi, Texas, before dissipating as a tropical depression after crossing the Rio Grande into northern Mexico.〔〔 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 Fern (1971)」の詳細全文を読む スポンサード リンク
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