textproduct: Key West

KEY MESSAGES

- Wetter conditions are expected to end the weekend.

- Heat indices may approach 105 to 110 degrees each afternoon for some Florida Keys island communities, especially in the Upper Keys.

- A trough is expected to develop and sit along the eastern and southeast U.S., which may result in an active weather pattern early next week.

UPDATE

Issued at 1005 PM EDT Sat Jul 25 2026 Recent KBYX radar imagery shows isolated to scattered shower activity this evening across portions of the Straits, eastern Florida Bay, and lingering light activity across the Lower Keys from a cloud line that formed earlier. With the moist air mass in place characterized by a PWAT of 2.18 inches per the KEY RAOB this evening (25/00Z) and favorable instability, PoPs will range from 20-35% the remainder of the evening and overnight with additional scattered showers and occasional storms possible at any moment. In addition, the col currently in place between high pressure in northern Gulf and the north Atlantic will gradually veer to a northwesterly flow regime into Sunday. As PWATs are anticipated to remain higher than 2 inches into tomorrow, rain chances will be higher to end the weekend. Otherwise, it will remain warm and humid with overnight lows mainly in the lower 80s.

AVIATION

(00Z TAFS) Issued at 1003 PM EDT Sat Jul 25 2026 Scattered to numerous SHRA with occasional TSRA will be possible overnight into Sunday across the Florida Keys, which may bring MVFR/IFR flight restrictions to the Island Chain terminals at times. However, conditions will be mainly VFR outside of any of the precipitation activity with light/VRB winds overnight gradually shifting to the NW on Sunday at 5-10 kts throughout the day.

MARINE

Issued at 1102 AM EDT Sat Jul 25 2026 No watches, warnings, or advisories are currently in effect for the Florida Keys waters. From synopsis, a col will develop across the region today, leading to a brief period of light and variable winds through this evening. Thereafter, breezes will freshen to gentle breezes and back to the west to northwest as a surface trough develops Sunday. Breezes will return from the southwest and west as the trough moves east of the Florida Peninsula early next week. There is growing confidence of a return to an active weather pattern starting Sunday night.

KEY WATCHES/WARNINGS/ADVISORIES

FL...None. GM...None.