Subtropical Storm One (1974)

1974 Florida subtropical storm
The subtropical storm on June 24 off the west coast of Florida
Meteorological history
FormedJune 22, 1974
ExtratropicalJune 25, 1974
DissipatedJune 27, 1974
Subtropical storm
1-minute sustained (SSHWS/NWS)
Highest winds65 mph (100 km/h)
Lowest pressure1000 mbar (hPa); 29.53 inHg
Overall effects
Fatalities3 direct
Damage$10 million (1974 USD)
Areas affectedSoutheastern United States, especially Florida
IBTrACSEdit this at Wikidata

Part of the 1974 Atlantic hurricane season

Subtropical Storm One was a short-lived subtropical cyclone that brought copious amounts of rainfall to central Florida in late June 1974. The storm originated in an area of convection that detached from a tropical depression over the southwestern Gulf of Mexico on June 24. A new area of low pressure developed underneath the convection and the system began to intensify. Later that day, the storm had become sufficiently organized to be classified as a subtropical depression. Early on June 25, it made landfall near Clearwater, Florida with winds of 50 mph (85 km/h) and later attained its peak intensity over eastern Florida with winds of 65 mph (100 km/h). After reemerging into the Atlantic Ocean, the system began to weaken as it underwent an extratropical transition. The storm ultimately dissipated off the coast of North Carolina early on June 26.

Despite its relatively weak strength, the system produced nearly 12 in (300 mm) of rain around Tampa, Florida, and the National Hurricane Center reported upwards of 20 in (510 mm) nearby. Around Lake Okeechobee, precipitation totals of 7 in (180 mm) were common. The heavy rainfall led to moderate flooding across the state. One tornado was confirmed to have touched down in association with the cyclone. Three people drowned as a result of the storm and damage amounted to $10 million (1974 USD, $61.8 million in 2009 USD).