Marine Thunderstorm Wind — Gulf of America From West End of Seven Mile Bridge To Halfmoon Shoal Out To 5 Fathoms, Gulf of Mexico

2025-09-12 · near Key West, Gulf of America From West End of Seven Mile Bridge To Halfmoon Shoal Out To 5 Fathoms, Gulf of Mexico

Event narrative

A northwest wind of 37 knots was recorded at the National Ocean Service gauge at the Florida Keys National Marine Sanctuary's Nancy Foster Center.

Wider weather episode

Showers and thunderstorms originating in weak, nebulous lower to middle tropospheric steering flow on the afternoon of September 12, 2025, produced isolated gale force wind gusts and a waterspout near the Lower Florida Keys. The showers and thunderstorms eventually evolved into a mesoscale convective system over the southeast Gulf of America featuring a large southward-moving outflow boundary bringing scattered gale-force wind gusts through much of the Florida Keys coastal waters the evening of September 12 to the early morning hours of September 13, 2025.

View location on OpenStreetMap → (24.5510, -81.8076)

Source: NOAA Storm Events Database, event_id 1294475. Narrative written by the NWS forecast office that issued the report.