Area Forecast Discussion
Issued by NWS Key West, FL
Issued by NWS Key West, FL
018 FXUS62 KKEY 300253 AFDKEY Area Forecast Discussion National Weather Service Key West FL 1053 PM EDT Fri Aug 29 2025 ...New DISCUSSION, MARINE, AVIATION... .DISCUSSION... Issued at 935 PM EDT Fri Aug 29 2025 Low pressure that is continuing to slide northeastward off the Atlantic Coast this evening is keeping a poorly defined pressure field across the Keys this evening. This has resulted in light and variable breezes and allowed mesoscale forcing to dominate the area. This, along with more than sufficient CAPE, ample deep layered moisture, and weak inhibition, has allowed island late island cloud line convection and mainland activity to affect the Keys. More recently a broad outflow boundary originating over Cuba has been driving northward into the outer Florida Straits. While activity near the island chain is limited at this time, broad pockets of active weather remain. No significant change to our weather make up is expected overnight. With that said, a cooling mainland should allow light breezes to become prevailing out of the southeast to south. Rain chances will remain high overnight despite earlier activity. This is due to CAPE and moisture remaining more than adequate and the copious number of outflow boundaries present across the region. Temperatures will generally range in the lower 80s with dew points in the mid to upper 70s. && .MARINE... Issued at 935 PM EDT Fri Aug 29 2025 A chaotic pressure field will result in a nebulous flow across Keys waters overnight, possibly becoming a prevailing southeast to south late. Outflow boundaries are abundant and further rounds of showers and thunderstorms, accompanied by locally higher winds and seas will likely continue. Only minor adjustments made in the evening marine update. && .AVIATION... (00Z TAFS) Issued at 935 PM EDT Fri Aug 29 2025 VFR conditions will prevail at the island terminals. With that said, scattered showers and thunderstorms across the broader area may periodically impact the terminals. Surface winds away from convection will be light and mostly east, becoming southeast to south. && .KEY WATCHES/WARNINGS/ADVISORIES... FL...None. GM...None. && $$ Public/Marine/Fire...11 Aviation/Nowcasts....11 Data Acquisition.....MC Visit us on the web at weather.gov/key Follow us on Facebook and Twitter at: www.facebook.com/nwskeywest www.twitter.com/nwskeywest