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1944 Cuba–Florida hurricane

Category 4 Atlantic hurricane in 1944

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Through Cuba, Atmospheric pressure and Pascal (unit)

The disturbance began suddenly over the western Caribbean Sea, strengthening into a tropical storm on October 12 within hours of initial development. It intensified into a hurricane the next day, with a brief but slow westward path bringing it near Grand Cayman. There, the storm produced rough surf and torrential rainfall for several days, destroying all of the Cayman Islands' crops and damaging coastal property; the storm proved to be the rainiest hurricane in Grand Cayman's history. On October 16, the developing hurricane made a sharp turn northward and accelerated. It made landfall on western Cuba two days later at peak strength with winds of 145 mph (233 km/h), making it a Category 4 hurricane. Cuba, hardest hit by the storm, saw at least 300 people killed and suffered extensive damage inflicted by winds and storm surge, especially in the Havana area. Numerous ships sank in Havana Harbor amid agitated waters and marine debris.

A gradual weakening trend began after the hurricane crossed Cuba, attenuated by the storm's large size. It crossed the Dry Tortugas as a major hurricane on October 18 before making a final landfall near Sarasota, Florida, as a Category 2 hurricane the following day. Although property damage was considerable in the Florida Keys and throughout the Florida coasts, the bulk of the storm's damage toll arose from significant losses of crops in the state's citrus-producing regions, curtailing record harvests. Eighteen people were killed in the state, half from the loss of a ship in Tampa Bay. The storm continued to weaken as it passed over Florida and the Southeastern United States, producing heavy rains throughout the U.S. East Coast and gusty winds that led to widespread power outages. On October 20, the storm transitioned into an extratropical cyclone and tracked northeastwards along the U.S. East Coast. The system was last distinguishable east of Greenland four days later.

Meteorological history

The origin of this major hurricane was traced to a tropical disturbance that moved into the western Caribbean Sea by October 11, 1944. The system was initially broad; no observations of strong winds or low pressures indicated a tropical cyclone's presence. Nearby weather reports that day nonetheless suggested tropical cyclogenesis was underway. Based on aerial and surface observations, the Atlantic hurricane reanalysis project determined in 2013 that the system organized into a tropical depression by 12:00 UTC on October 12. Operationally, the first evidence of a developing cyclone was a report of rough seas later that evening by a ship 100 mi (160 km) east of the Swan Islands. The incipient system tracked towards the north, quickly intensifying; tropical storm intensity was attained just six hours after the initial tropical depression classification, and it strengthened into a hurricane by 18:00 UTC on October 13.

Two days later, the slow-moving hurricane took a more westward trajectory and passed south of Grand Cayman—sustained winds on the island peaked at 96 mph (154 km/h) with a gust to 118 mph (190 km/h), while the air pressure bottomed out at 984 mbar (hPa; 29.06 inHg). Between October 16–17, the storm made an abrupt turn towards the north along the 83rd meridian west and continued to strengthen, gradually accelerating northwards. It became a major hurricane by 18:00 UTC on October 17 and reached Category 4 intensity six hours later as it passed over the western portion of Isla de la Juventud, Cuba. The following morning, the cyclone reached its peak intensity with winds of 145 mph (233 km/h), a value extrapolated by the reanalysis project based on a pressure of 937 mbar (hPa; 27.67 inHg) observed on the northern coast of Cuba; this was the lowest pressure measured in connection with the hurricane. Maintaining peak strength, it made landfall on mainland Cuba at around 08:00 UTC on October 18, crossing the narrowest part of the island 10–15 mi (16–24 km) west of Havana before emerging into the Gulf of Mexico.

The hurricane's interaction with Cuba caused the winds to taper slightly, bringing the storm down from its peak intensity to a Category 3 hurricane over the Straits of Florida. At 21:00 UTC on October 18, the eye passed over the Dry Tortugas, producing two hours of calm over the islands. During its passage, the storm had winds estimated at 120 mph (190 km/h). It had grown considerably in areal extent, with a radius of maximum wind nearly twice as large as climatologically expected. Gradual weakening continued as the storm accelerated towards the north-northeast. This lessened the storm's winds to 105 mph (169 km/h)—a Category 2 hurricane—as it made landfall just south of Sarasota, Florida, at 07:00 UTC on October 19. Due to the cyclone's large size, its weakening over the Florida peninsula was anomalously slow and at times underestimated by the model typically used to estimate the inland decay of tropical cyclones. The storm was still a hurricane when it passed east of Tampa Bay and over Central Florida later that day; a pressure of 967 mbar (hPa; 28.55 inHg) recorded at a weather station in Tampa, Florida, was a record low for the site in its over-50-year observational history. The large hurricane finally weakened to tropical storm status south of Jacksonville, Florida, on the afternoon of October 19. It straddled the Georgia coast before pressing farther inland over South Carolina. As it did so, the storm began to become more baroclinic, transitioning into a fully extratropical cyclone over South Carolina on October 20. These extratropical remnants maintained their composure, emerging over the Atlantic along the coast of the Mid-Atlantic states and passing over Nova Scotia on October 21. Some re-intensification occurred as the system traversed the Labrador Sea and Greenland before it merged with the Icelandic Low on October 24.

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