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1921 Tampa Bay hurricane

Category 4 Atlantic hurricane in 1921

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Through Cuba, Atmospheric pressure and Atmospheric circulation

The storm brought strong winds to the Swan Islands, including hurricane-force winds on the main island. Heavy rains fell in Cuba, particularly in Pinar del Río Province, but only minor damage occurred. In Florida, storm surge and abnormally high tides caused damage along much of the state's west coast from Pasco County southward. Several neighborhoods in Tampa were inundated, especially the interbay neighborhoods of Ballast Point, DeSoto Park, Edgewater Park, Hyde Park, Palmetto Beach, and other areas in the vicinity of Bayshore Boulevard. Strong winds also damaged hundreds of trees, signs, buildings, and homes. Four deaths occurred in Tampa, three from drownings and another after a man touched a live wire. The storm left two additional fatalities in St. Petersburg. A number of streets in Tarpon Springs were littered with masses of debris, with many structures and trees suffering extensive damage. Southward in Manatee County and Sarasota County, many waterfront communities along Sarasota Bay and the Gulf of Mexico, such as Cortez and Sarasota, suffered heavy structural losses. Strong winds occurred as far east as the Atlantic coast of the state, though wind damage east of the Tampa Bay area was generally limited to downed trees and power lines, resulting in power outages, particularly in Orlando. Agriculture throughout the state experienced significant impact as well, including over $2 million (equivalent to $30 million in 2024) in damage and the loss of at least 800,000 boxes of citrus crops alone. Overall, the hurricane left at least eight deaths and about $10 million (equivalent to $140 million in 2024) in damage.

Meteorological history

In mid-October, a significant drop in atmospheric pressures over the western Caribbean Sea coincided with the development of a trough on October 17. Observations suggested that a circulation formed on October 20, with the Atlantic hurricane database listing a tropical storm beginning at 00:00 UTC, with the system was situated about 95 mi (153 km) southeast of the Archipelago of San Andrés, Providencia and Santa Catalina. The cyclone initially moved slowly northwestward due to a high pressure system over Bermuda. Early on October 22, the storm intensified into a Category 1 hurricane, based on sustained winds of 81 mph (130 km/h) on Great Swan Island. The hurricane strengthened significantly over the northwestern Caribbean, becoming a Category 2 hurricane at 00:00 UTC on October 23 and a Category 3 hurricane six hours later. Around 18:00 UTC, the cyclone reached Category 4 intensity and peaked with maximum sustained winds of 140 mph (230 km/h) and a minimum barometric pressure of 941 mbar (27.8 inHg). The latter was observed by the schooner Virginia, while the former was estimated using the southern wind-pressure relationship.

Early on October 24, the hurricane moved northward across the Yucatán Channel and entered the Gulf of Mexico. Thereafter, the system gradually curved to the northeast as the high pressure weakened and the storm became under the influence of a southwesterly air current. At 12:00 UTC on October 25, the cyclone weakened to a Category 3 hurricane. About 10 hours later, the hurricane made landfall near Tarpon Springs, Florida, with maximum sustained winds of 115 mph (185 km/h), making it the first and most recent major hurricane to hit the Tampa Bay area since 1848. The storm further weakened to a Category 1 hurricane over Central Florida early on October 26, then emerged into the Atlantic Ocean near New Smyrna Beach after about six hours over land. The hurricane briefly re-strengthened to reach winds of 90 mph (140 km/h) early on October 27 as it drifted to the east-southeast for about two days. Late on October 29, the system accelerated northeastward and weakened to a tropical storm, before being absorbed by a large extratropical cyclone about 430 mi (690 km) southeast of Bermuda at 00:00 UTC on October 30. About six hours later, the remnants of the hurricane became indistinguishable. These remnants were the second storm encountered by USS Olympia in its Atlantic crossing with the American unknown soldier from World War I.

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