Coastal Waters Forecast
Issued by NWS Key West, FL
Issued by NWS Key West, FL
865 FZUS52 KKEY 040224 CWFKEY Coastal Waters Forecast for the Florida Keys National Weather Service Key West FL 924 PM EST Tue Nov 3 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. The Wave Detail section highlights the period and direction of origin for the highest-energy waves, as well as any long-period swells moving in a different direction than the wind. GMZ005-041430- Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas 924 PM EST Tue Nov 3 2026 .SYNOPSIS... High pressure offshore the Mid Atlantic States will maintain gentle to occasionally moderate east breezes through the evening followed by gradual slackening. Expect light to gentle breezes through the remainder of the week along with drier conditions. A surface high will develop across the Gulf beginning Friday, which may lead to brief nocturnal wind surges along the west coast of Florida and into the outer Gulf waters. The Approximate Shoreward Edge of the Gulf Stream as of November 03, 2026... 57 NM south of Dry Tortugas Light, on Loggerhead Key 34 NM south of Cosgrove Shoal Light, off the Marquesas Keys 25 NM south of Sand Key Light, off Key West 17 NM south of Looe Key, off Big Pine Key 17 NM southeast of Sombrero Key Light, off Marathon 28 NM south-southeast of Alligator Reef Light, off Islamorada 26 NM southeast of Molasses Reef Light, off Key Largo 12 NM east-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. $$ GMZ031-041430- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- 924 PM EST Tue Nov 3 2026 .OVERNIGHT...East winds near 10 knots. Bay waters a a light chop. A chance of showers with a slight chance of thunderstorms. .WEDNESDAY...Northeast to east winds near 10 knots. Bay waters a light chop. A chance of showers with a slight chance of thunderstorms. .WEDNESDAY NIGHT AND THURSDAY...Northeast to east winds near 10 knots. Bay waters a light chop. A slight chance of showers and thunderstorms. .THURSDAY NIGHT...Northeast winds near 10 knots. Bay waters a light chop. .FRIDAY...Northeast winds 5 to 10 knots. Bay waters smooth to a light chop. .FRIDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters smooth to a light chop. .SATURDAY...North to northeast winds near 5 knots, becoming east near 5 knots in the afternoon. Bay waters smooth. .SATURDAY NIGHT...North to northeast winds 5 to 10 knots. Bay waters smooth to a light chop. .SUNDAY...North to northeast winds near 5 knots. Bay waters smooth. .SUNDAY NIGHT...Northwest to north winds 5 to 10 knots, increasing to near 10 knots. Bay waters smooth to a light chop, becoming a light chop. A slight chance of showers. $$ GMZ032-035-041430- 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- 924 PM EST Tue Nov 3 2026 .OVERNIGHT...East winds near 10 knots. Seas around 1 foot, except 1 to 2 feet west of the Marquesas Keys. Nearshore waters a light chop. A chance of showers with a slight chance of thunderstorms. .WEDNESDAY...Northeast to east winds near 10 knots, decreasing to 5 to 10 knots. Seas around 1 foot. Nearshore waters a light chop, becoming smooth to a light chop. A slight chance of showers and thunderstorms. .WEDNESDAY NIGHT...Northeast to east winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. A slight chance of showers and thunderstorms. .THURSDAY...Northeast to east winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. A slight chance of showers and thunderstorms. .THURSDAY NIGHT...Northeast to east winds near 10 knots, decreasing to 5 to 10 knots. Seas around 1 foot. Nearshore waters a light chop, becoming smooth to a light chop. .FRIDAY...Northeast winds 5 to 10 knots, decreasing to near 5 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop, becoming smooth. .FRIDAY NIGHT...North to northeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. .SATURDAY...North to northeast winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. .SATURDAY NIGHT...North to northeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. .SUNDAY...North winds near 5 knots, becoming northwest to north 5 to 10 knots. Seas 1 foot or less, building to around 1 foot. Nearshore waters smooth, becoming smooth to a light chop. .SUNDAY NIGHT...Northwest to north winds near 10 knots, becoming north 10 to 15 knots. Seas 1 to 2 feet, building to around 2 feet. Nearshore waters a light chop, becoming a light to moderate chop. A slight chance of showers. $$ GMZ042>044-041430- Hawk Channel from Ocean Reef to Craig Key out to the reef- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- 924 PM EST Tue Nov 3 2026 .OVERNIGHT...East winds 10 to 15 knots, decreasing to near 10 knots after midnight. Seas around 2 feet, subsiding to 1 to 2 feet. Nearshore waters a light to moderate chop, becoming a light chop. A chance of showers with a slight chance of thunderstorms. .WEDNESDAY...Northeast to east winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. A slight chance of showers and thunderstorms. .WEDNESDAY NIGHT AND THURSDAY...Northeast to east winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. A slight chance of showers and thunderstorms. .THURSDAY NIGHT...Northeast to east winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. .FRIDAY...Northeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. .FRIDAY NIGHT...Northeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. .SATURDAY...Northeast winds near 5 knots. Seas around 1 foot. Nearshore waters smooth. .SATURDAY NIGHT...North to northeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth. .SUNDAY...North to northeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. .SUNDAY NIGHT...North winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. A slight chance of showers. $$ GMZ052-072-041430- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- 924 PM EST Tue Nov 3 2026 .OVERNIGHT...East winds 10 to 15 knots, decreasing to near 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: North to northeast 4 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms. .WEDNESDAY...Northeast to east winds near 10 knots. Seas 2 to 3 feet. Wave Detail: North to northeast 2 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms. .WEDNESDAY NIGHT...Northeast to east winds near 10 knots. Seas 2 to 3 feet, subsiding to around 2 feet. Wave Detail: North to northeast to east 2 feet at 5 seconds. A slight chance of showers and thunderstorms. .THURSDAY...Northeast to east winds near 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms. .THURSDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 3 feet. .FRIDAY...Northeast winds near 10 knots. Seas around 2 feet. .FRIDAY NIGHT THROUGH SATURDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 to 2 feet. .SUNDAY...Northeast winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers. .SUNDAY NIGHT...North winds 5 to 10 knots, becoming north to northeast near 10 knots. Seas 1 to 2 feet, building to around 2 feet. A chance of showers. $$ GMZ053>055-073>075-041430- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 924 PM EST Tue Nov 3 2026 .OVERNIGHT...East to southeast winds near 10 knots, decreasing to 5 to 10 knots. Seas 2 to 3 feet, subsiding to around 2 feet. Wave Detail: East 3 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms. .WEDNESDAY...Northeast to east winds 5 to 10 knots. Seas around 2 feet, subsiding to 1 to 2 feet. Wave Detail: Northeast to east 2 feet at 6 seconds. A slight chance of showers and thunderstorms. .WEDNESDAY NIGHT...Northeast to east winds near 10 knots. Seas around 2 feet. Wave Detail: Northeast to east 2 feet at 5 seconds. A slight chance of showers and thunderstorms. .THURSDAY...Northeast to east winds near 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms. .THURSDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. .FRIDAY...Northeast winds near 10 knots, decreasing to 5 to 10 knots. Seas 1 to 2 feet. .FRIDAY NIGHT THROUGH SATURDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 to 2 feet. .SUNDAY...Northeast winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers. .SUNDAY NIGHT...North to northeast winds near 10 knots. Seas around 2 feet. A chance of showers with a slight chance of thunderstorms. $$ GMZ033-034-041430- 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- 924 PM EST Tue Nov 3 2026 .OVERNIGHT...East to southeast winds 10 to 15 knots. Seas 1 to 3 feet. Wave Detail: East 2 feet at 4 seconds. A chance of showers with a slight chance of thunderstorms. .WEDNESDAY...East winds near 10 knots, decreasing to 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Northeast to east 1 foot at 3 seconds. A slight chance of showers and thunderstorms. .WEDNESDAY NIGHT...Northeast to east winds near 10 knots. Seas 1 to 2 feet. Wave Detail: Northeast to east 1 foot at 3 seconds. A slight chance of showers and thunderstorms. .THURSDAY...Northeast to east winds 5 to 10 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. .THURSDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. .FRIDAY...Northeast winds 5 to 10 knots. Seas around 1 foot. .FRIDAY NIGHT...Northwest to north winds near 10 knots, becoming north to northeast. Seas 1 to 2 feet. .SATURDAY...North to northeast winds 5 to 10 knots. Seas around 1 foot. .SATURDAY NIGHT...Northwest to north winds near 10 knots, becoming north to northeast. Seas 1 to 2 feet. .SUNDAY...North winds 5 to 10 knots, becoming northwest to north near 10 knots. Seas around 1 foot. A slight chance of showers. .SUNDAY NIGHT...North winds 10 to 15 knots. Seas 1 to 2 feet, building to 2 to 3 feet. A slight chance of showers. $$ CLR