FPUS72 KKEY 191819 NOWKEY Short Term Forecast National Weather Service Key West FL 219 PM EDT Tue Aug 19 2025 GMZ055-075-191930- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 219 PM EDT Tue Aug 19 2025 .NOW... Through 330 pm, isolated showers and a stray thunderstorm will wax and wane as they move to the south to southwest at near 5 knots across the westernmost Florida Straits. Mariners encountering this activity can expect reduced visibility in bouts of moderate to heavy rain, wind gusts of 20 to 25 knots, and a stray lightning strike. $$ AJP