FPUS72 KKEY 041855 NOWKEY Short Term Forecast National Weather Service Key West FL 255 PM EDT Tue Aug 4 2026 FLZ076>078-GMZ031-032-035-042000- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- Bayside and Gulfside from Craig Key to west end of Seven Mile Bridge- Gulf of America from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- Including the Communities of Key Largo, Marathon, and Key West 255 PM EDT Tue Aug 4 2026 .NOW... Through 400 pm, a broken band of scattered showers and isolated thunderstorms associated with a boundary are pushing northward from the Island Chain across the Florida Bay, Bayside, and Gulfside nearshore waters. Mariners encountering this activity can expect blinding downpours, wind gusts 20 to 25 knots, and a few cloud to surface lightning strikes. $$