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Tropical Storm Delia (1973)
Tropical Storm Delia was the first tropical cyclone on record to make landfall in the same city twice.〔 Forming out of a tropical wave on September 1, 1973, Delia gradually strengthened into a tropical storm as it moved north by September 3. After reaching this strength, the storm turned more westward and further intensified, nearly attaining hurricane status the next day. The storm peaked with winds of 70 mph (110 km/h) and a barometric pressure of 986 mbar (hPa; 29.11 inHg). Several hours later, Delia made landfall near Freeport, Texas; however, the storm began to execute a counterclockwise loop, causing it to move back over the Gulf of Mexico. On September 5, the storm made another landfall in Freeport before weakening to a depression. The remnants of Delia eventually dissipated early on September 7 over northern Mexico.
Due to the erratic movement of the storm along the Texas coastline, significant rainfall fell in areas near the center and in parts of Louisiana. This led to widespread flooding, especially of farmland, that left $6 million in damages. Five people were killed during the storm.
==Meteorological history==
Tropical Storm Delia originated from a tropical wave that formed over the central Caribbean Sea in late August 1973. Tracking towards the west-northwest, convective activity increased and the overall structure of the system improved. By August 31, a weak area of low pressure formed over the Gulf of Honduras.〔 This system tracked northward and further organized into a tropical depression just off the southeastern coast of the Yucatán Peninsula on September 1.〔 Gradually intensifying, the depression became a tropical storm on September 3 as it turned towards the west.〔 In accordance with its upgrade, it was given the name Delia. This upgrade followed a reconnaissance mission into the system that found sustained winds of 50 mph (85 km/h). A complex steering patter formed later that day, resulting in a more hostile environment for the cyclone.
As Delia neared the Texas coastline, it managed to intensify into a strong tropical storm with winds of 70 mph (110 km/h) and reconnaissance reported winds well in excess of hurricane-force in numerous squalls associated with the storm. The lowest pressure was recorded at 986 mbar (hPa; 29.11 inHg). However, Delia was not classified a hurricane as it had not developed an eyewall around the center of circulation. Delia subsequently made its first landfall at Freeport, Texas late on September 4. After executing a counterclockwise loop, the storm made its second landfall in Freeport on September 5. After moving inland, the storm quickly weakened, becoming a depression on September 6 before dissipating early the next day over northern Mexico.〔
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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