Area Forecast Discussion
Issued by NWS Key West, FL
Issued by NWS Key West, FL
327 FXUS62 KKEY 101520 AFDKEY Area Forecast Discussion National Weather Service Key West FL 1120 AM EDT Thu Sep 10 2026 ...New DISCUSSION, MARINE, AVIATION... .KEY MESSAGES... - Moisture will linger across the region through the end of the week, supporting rain and thunderstorm chances. - The primary threat for any stronger thunderstorms will be dangerous lightning strikes. When thunder roars, go indoors. If on a boat, stay low, or go below. - Heat index values will range from 100-108 degrees daily with little relief from the muggy conditions overnight. Know the signs of heat stress, take frequent breaks, and stay hydrated. && .DISCUSSION... Issued at 1119 AM EDT Thu Sep 10 2026 Scattered showers and thunderstorms have continued to persist for a majority of the day. Some of these storms have produced wind gusts of near 34 knots resulting in Special Marine Warnings being issued. Outside of convection skies are partly to mostly cloudy. Temperatures along is the island chain are near 90 with dewpoints near 80 making for a hot humid day. Across the Reef, marine locations are recording easterly winds of near 10 knots. The rest of today showers are expected to start to decline in coverage and strength with only 30% PoPs in place for tonight. No changes were needed to the current package as things are on the downward trend on radar. && .MARINE... Issued at 1119 AM EDT Thu Sep 10 2026 Scattered showers and thunderstorms will continue to move northwest at 10 to 15 knots thorugh the distant Straits south of the Upper Keys that continue to contain wind gusts of near 35 knots requiring Special Marine Warnings. Outside of that area, scattered showers and thunderstorms are producing near 25 knots. Ridging across the southeastern United States and Florida will maintain gentle to moderate east to southeasterly breezes. Expect breezes to peak in the evening and overnight while lulling during the day during the day. A series of lower level moisture swathes will support periods of elevated rain and thunder chances through the remainder of the week. && .AVIATION... (15Z TAFS) Issued at 1119 AM EDT Thu Sep 10 2026 VFR conditions will prevail at both EYW and MTH through the TAF period. Scattered showers and thunderstorms will continue to move through the coastal waters and occasionally cross the island chain so VCSH is included. TEMPOs will be added if direct impacts are expected. Near surface winds will be easterly at near 10 knots. && .KEY WATCHES/WARNINGS/ADVISORIES... FL...None. GM...None. && $$ Public/Marine/Fire...AP Aviation/Nowcasts....AP Data Acquisition.....AP Visit us on the web at weather.gov/key Follow us on Facebook and X at: www.facebook.com/nwskeywest www.x.com/nwskeywest