Hurricane Hilda

Category 4 Atlantic hurricane in 1964
Hurricane Hilda
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Part of the 1964 Atlantic hurricane season

Hurricane Hilda was an intense tropical cyclone that ravaged areas of the United States Gulf Coast,[1] particularly Louisiana. In addition to its damage inland, the hurricane greatly disrupted offshore oil production, and at its time was the costliest tropical cyclone for Louisiana's offshore oil production. Due in part to flights made by the National Hurricane Research Laboratory, Hilda became one of the most well-documented storms meteorologically in the Atlantic.[2] Lasting for seven days as a tropical cyclone, Hilda caused US$126 million in damage and 38 deaths.[nb 1] It was the tenth named storm, sixth hurricane, and the fourth major hurricane of the 1964 Atlantic hurricane season.

Hilda developed over the southern shores of Cuba on September 28 as a tropical depression, tracking westward in an area of favorable conditions and reaching tropical storm intensity the next day. Once situated in the Gulf of Mexico, Hilda strengthened into a hurricane and began a slow trawl northward, rapidly intensifying to its peak intensity with winds of 140 mph (240 km/h) on October 1, making it a Category 4 hurricane. Slight weakening occurred as Hilda made landfall on the southern Louisiana coast on October 3. After reaching land, the hurricane took a sharp turn eastward and rapidly weakened as a result of land interaction and the presence of cool, dry air. The weakened remnants of Hilda merged with a cold front a day after landfall and dissipated on October 5.

Originating near Cuba, the cyclone intensified while moving through the Gulf of Mexico, and became a Category 4 hurricane in the Gulf of Mexico before striking Louisiana in early October. In combination with a frontal zone located across the Southeast United States, the hurricane spread heavy rains through the South through the Carolinas into the Mid-Atlantic States. Hilda led to significant damage to oil platforms in the Gulf of Mexico, as well as $126 million (1964 USD) in damage, and 38 deaths.

Meteorological history

Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
  Tropical depression (≤38 mph, ≤62 km/h)
  Tropical storm (39–73 mph, 63–118 km/h)
  Category 1 (74–95 mph, 119–153 km/h)
  Category 2 (96–110 mph, 154–177 km/h)
  Category 3 (111–129 mph, 178–208 km/h)
  Category 4 (130–156 mph, 209–251 km/h)
  Category 5 (≥157 mph, ≥252 km/h)
  Unknown
Storm type
circle Tropical cyclone
square Subtropical cyclone
triangle Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression