Area Forecast Discussion
Issued by NWS Key West, FL
Issued by NWS Key West, FL
298 FXUS62 KKEY 111455 AFDKEY Area Forecast Discussion National Weather Service Key West FL 1055 AM EDT Fri Sep 11 2026 ...New DISCUSSION, MARINE, AVIATION... .KEY MESSAGES... - Moisture will linger across the region through the start of the weekend, supporting slightly above normal rain and thunderstorm chances. - The primary threat for any stronger thunderstorms will be 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 1055 AM EDT Fri Sep 11 2026 KBYX has continuously detected scattered showers in various locations of the coastal waters this morning. The island chain has seen a few cross over only producing a few hundredths of an inch in rainfall. Along the island chain temperatures are nearing 90 with dewpoints in the upper 70s making for another humid day. GOES-19 Visible Satelitte shows mostly sunny skies. Across the Reef, marine locations are reporting east to southeast winds of near 10 knots. Today is expected to continue with a similar pattern of garden variety showers popping up across the coastal waters and occasionally moving northwest across the island chain itself. No changes were needed to this update package. && .MARINE... Issued at 1055 AM EDT Fri Sep 11 2026 No watches, warnings, or advisories are currently in effect in the Florida Keys waters. From synopsis, ridging across the southeastern United States and Florida will maintain mostly gentle east to southeasterly breezes over the next few days. Expect breezes to peak in the evening and overnight while lulling during the day. Low level moisture will remain abundant and keep convective potential slightly above normal. The ridge will be reinforced late in the forecast and may drive freshening northeast to easterly breezes. && .AVIATION... (15Z TAFS) Issued at 1055 AM EDT Fri Sep 11 2026 VFR conditions will prevail at both EYW and MTH through the TAF period. Scattered showers will continue to pop up throughout the coastal waters occasionally crossing over the island chain, therefore VCSH is included at both terminals. If direct impacts are expected TEMPOs will be included at that time. Near surface winds will be east to southeasterly at 5 to 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