FPUS72 KKEY 042103 NOWKEY Short Term Forecast National Weather Service Key West FL 503 PM EDT Mon May 4 2026 GMZ031-042215- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- 503 PM EDT Mon May 4 2026 .NOW... Through 6 PM, a shower over the southern Florida mainland will continue to move to the east to southeast between 5 to 10 knots. Since the issuance of the previous forecast, another shower has since developed in the last half hour near Manatee Keys across Florida Bay. Mariners encountering this activity in Florida Bay can expect heavy downpours, wind gusts of 20 to 25 knots, with the potential for a lightning strike or two not completely ruled out. $$ MJV