FZUS52 KKEY 072031 CWFKEY Coastal Waters Forecast for the Florida Keys National Weather Service Key West FL Issued by National Weather Service Miami FL 431 PM EDT Tue Jul 7 2026 Florida Bay, Hawk Channel and Straits of Florida from Ocean Reef to south of Dry Tortugas, and the extreme southeastern Gulf of America, including The Florida Keys National Marine Sanctuary Seas are given as significant wave height, which is the average height of the highest 1/3 of the waves. Individual waves may be more than twice the significant wave height. Wave Detail will include details about the period and direction of origin for the highest energy waves. Long-period swells coming from a different direction than the wind would be included in the Wave Detail. GMZ005-080845- Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas 431 PM EDT Tue Jul 7 2026 .SYNOPSIS... Breezes are expected to shift between easterly and southeasterly and trend upwards beginning tonight as the western edge of the Atlantic ridge strengthens and lifts northward into Central Florida. Winds will tend to peak in the evening where periodic cautions may be required for portions of Keys waters. Advisories cannot be completely ruled out at this time. Shower coverage will wax and wane between slight and a chance, with a day or two drier stretch arriving mid week. The Approximate Shoreward Edge of the Gulf Stream as of July 5, 2026... 51 NM Southeast of Dry Tortugas Light...on Loggerhead Key. 15 NM Southeast of Cosgrove Shoal Light...off the Marquesas Keys. 6 NM South of Sand Key Light...off Key West. 6 NM South of Looe Key...off Big Pine Key. 6 NM Southeast of Sombrero Key Light...off Marathon. 7 NM Southeast of Alligator Reef Light...off Islamorada. 6 NM Southeast of Molasses Reef Light...off Key Largo. 4 NM Southeast of Carysfort Reef Light...off Ocean Reef. Gulf Stream Information Courtesy of the National Weather Service in Key West, using data from RTOFS and NASA SPoRT SST. $$ GMZ031-080845- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- 431 PM EDT Tue Jul 7 2026 .TONIGHT...East to southeast winds 5 to 10 knots. Bay waters smooth to a light chop. A slight chance of showers and thunderstorms. .WEDNESDAY...East to southeast winds 10 to 15 knots. Bay waters a light to moderate chop. A slight chance of showers and thunderstorms. .WEDNESDAY NIGHT...East to southeast winds near 15 knots. Bay waters a moderate chop. .THURSDAY...East to southeast winds 10 to 15 knots. Bay waters a light to moderate chop. .THURSDAY NIGHT...East to southeast winds 15 to 20 knots. Bay waters choppy. A slight chance of showers and thunderstorms. .FRIDAY...East to southeast winds 15 to 20 knots. Bay waters choppy. A chance of showers with a slight chance of thunderstorms. .FRIDAY NIGHT...East to southeast winds 15 to 20 knots. Bay waters choppy. .SATURDAY...East to southeast winds 10 to 15 knots. Bay waters a light to moderate chop. A slight chance of showers and thunderstorms. .SATURDAY NIGHT...East to southeast winds 10 to 15 knots. Bay waters a light to moderate chop. .SUNDAY...East to southeast winds 5 to 10 knots. Bay waters smooth to a light chop. .SUNDAY NIGHT...East to southeast winds 5 to 10 knots. Bay waters smooth to a light chop. $$ GMZ032-035-080845- 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- 431 PM EDT Tue Jul 7 2026 .TONIGHT...East to southeast winds 10 to 15 knots. Seas 1 foot or less. Nearshore waters a light to moderate chop. A slight chance of showers and thunderstorms. .WEDNESDAY...East to southeast winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. A slight chance of showers and thunderstorms. .WEDNESDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 1 to 2 feet, except 2 to 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters choppy. .THURSDAY...East to southeast winds 15 to 20 knots. Seas 1 to 2 feet, except 2 to 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters choppy. .THURSDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 2 to 3 feet. Nearshore waters choppy. A slight chance of showers and thunderstorms. .FRIDAY...East to southeast winds 15 to 20 knots. Seas 1 to 2 feet, except 3 to 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters choppy. A chance of showers with a slight chance of thunderstorms. .FRIDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters choppy. .SATURDAY...East to southeast winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. A slight chance of showers. .SATURDAY NIGHT...East to southeast winds 10 to 15 knots. Seas around 1 foot. Nearshore waters a light to moderate chop. .SUNDAY...East to southeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. .SUNDAY NIGHT...East to southeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. $$ GMZ042>044-080845- Hawk Channel from Ocean Reef to Craig Key out to the reef- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- 431 PM EDT Tue Jul 7 2026 .TONIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. A slight chance of showers and thunderstorms. .WEDNESDAY...East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. A slight chance of showers and thunderstorms. .WEDNESDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters choppy. .THURSDAY...East to southeast winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters choppy. .THURSDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Nearshore waters choppy. A slight chance of showers and thunderstorms. .FRIDAY...East to southeast winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Nearshore waters choppy. A chance of showers with a slight chance of thunderstorms. .FRIDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters choppy. .SATURDAY...East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. A slight chance of showers. .SATURDAY NIGHT...East to southeast winds 10 to 15 knots. Seas around 2 feet. Nearshore waters a light to moderate chop. .SUNDAY...East to southeast winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. .SUNDAY NIGHT...East to southeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. $$ GMZ052>055-072>075-080845- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 431 PM EDT Tue Jul 7 2026 .TONIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. .WEDNESDAY...East winds near 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. A slight chance of showers and thunderstorms. .WEDNESDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. .THURSDAY...East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. A slight chance of showers and thunderstorms. .THURSDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. A chance of showers with a slight chance of thunderstorms. .FRIDAY...East to southeast winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. A chance of showers with a slight chance of thunderstorms. .FRIDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. .SATURDAY...East to southeast winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. .SATURDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. .SUNDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. .SUNDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. $$ GMZ033-034-080845- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 431 PM EDT Tue Jul 7 2026 .TONIGHT...East winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms. .WEDNESDAY...East to southeast winds 10 to 15 knots. Seas 1 to 2 feet. A chance of showers with a slight chance of thunderstorms. .WEDNESDAY NIGHT...East to southeast winds 10 to 15 knots, becoming 15 to 20 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. A slight chance of showers and thunderstorms. .THURSDAY...East to southeast winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. .THURSDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. A chance of showers with a slight chance of thunderstorms. .FRIDAY...East to southeast winds near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. A chance of showers with a slight chance of thunderstorms. .FRIDAY NIGHT...East to southeast winds 15 to 20 knots, becoming southeast 10 to 15 knots after midnight. Seas 2 to 3 feet. A slight chance of showers. .SATURDAY...East to southeast winds near 10 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. .SATURDAY NIGHT...East to southeast winds near 10 knots. Seas 1 to 2 feet. .SUNDAY...East to southeast winds 5 to 10 knots. Seas 1 to 2 feet. .SUNDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less. $$