Coastal Waters Forecast
Issued by NWS Key West, FL
Issued by NWS Key West, FL
406 FZUS52 KKEY 160229 CWFKEY Coastal Waters Forecast for the Florida Keys National Weather Service Key West FL 1029 PM EDT Tue Oct 15 2024 Florida Bay, Hawk Channel and Straits of Florida from Ocean Reef to south of Dry Tortugas, and the extreme southeastern Gulf of Mexico, 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. GMZ005-160830- Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas 1029 PM EDT Tue Oct 15 2024 .SYNOPSIS...Weak high pressure over the Gulf of Mexico will maintain light to gentle, northeast to east breezes across the Florida Keys coastal waters tonight. Breezes will begin to freshen Wednesday, becoming strong Wednesday night, as a frontal boundary pushes southward through the Keys marine zones. An extended period of strong northeast breezes is expected late this week, as a large continental high pressure area settles across the eastern states and interacts with this frontal feature. The Approximate Shoreward Edge of the Gulf Stream as of October 5... 16 NM South of Dry Tortugas Light...on Loggerhead Key. 10 NM South of Cosgrove Shoal Light...off the Marquesas Keys. 7 NM South of Sand Key Light...off Key West. 8 NM South of Looe Key...off Big Pine Key. 12 NM South of Sombrero Key Light...off Marathon. 8 NM Southeast of Alligator Reef Light...off Islamorada. 5 NM Southeast of Molasses Reef Light...off Key Largo. 8 NM East of Carysfort Reef Light...off Ocean Reef. Gulf Stream Information Courtesy of the National Weather Service in Key West based on products from the Real Time Ocean Forecast System. $$ GMZ031-160830- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- 1029 PM EDT Tue Oct 15 2024 .OVERNIGHT...East winds near 5 knots, becoming northeast. Bay waters smooth. Scattered showers and isolated thunderstorms. .WEDNESDAY...North to northeast winds near 5 knots, increasing to near 10 knots. Bay waters smooth, becoming a light chop. Scattered showers and isolated thunderstorms. .WEDNESDAY NIGHT...North to northeast winds 10 to 15 knots, becoming northeast and increasing to 15 to 20 knots. Bay waters a light to moderate chop, becoming choppy. Scattered showers and isolated thunderstorms. .THURSDAY...North to northeast winds near 20 knots, becoming northeast and increasing to 20 to 25 knots. Bay waters rough, becoming very rough. Scattered showers and isolated thunderstorms. .THURSDAY NIGHT...Northeast winds 20 to 25 knots. Bay waters very rough. Scattered showers and isolated thunderstorms. .FRIDAY...Northeast winds 20 to 25 knots, increasing to near 25 knots. Bay waters very rough, becoming extremely rough. Numerous showers and isolated thunderstorms. .FRIDAY NIGHT...Northeast to east winds 20 to 25 knots. Bay waters very rough. Numerous showers and isolated thunderstorms. .SATURDAY...Northeast to east winds 20 to 25 knots. Bay waters very rough. Numerous showers and isolated thunderstorms. .SATURDAY NIGHT...Northeast to east winds 20 to 25 knots. Bay waters very rough. Scattered showers and isolated thunderstorms. .SUNDAY...Northeast winds 20 to 25 knots, decreasing to near 20 knots. Bay waters very rough, becoming rough. Scattered showers. .SUNDAY NIGHT...Northeast winds near 20 knots. Bay waters rough. Isolated showers. $$ GMZ032-035-160830- Bayside and Gulf side from Craig Key to west end of Seven Mile Bridge- Gulf of Mexico from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- 1029 PM EDT Tue Oct 15 2024 .OVERNIGHT...East to southeast winds near 5 knots, becoming northeast. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and isolated thunderstorms. .WEDNESDAY...North to northeast winds near 10 knots, increasing to near 15 knots in the afternoon. Seas 1 foot or less, building to 1 to 2 feet. Nearshore waters a light chop, becoming a moderate chop. Scattered showers and isolated thunderstorms. .WEDNESDAY NIGHT...North to northeast winds 15 to 20 knots, becoming northeast and increasing to 20 to 25 knots after midnight. Seas 1 to 3 feet, building to 2 to 4 feet, occasionally to 5 feet. West of the Marquesas Keys, seas 2 to 4 feet, occasionally to 5 feet, building to 5 to 7 feet, occasionally to 8 feet. Nearshore waters choppy, becoming very rough. Scattered showers and isolated thunderstorms. .THURSDAY AND THURSDAY NIGHT...Northeast winds near 25 knots. Seas 3 to 5 feet, occasionally to 6 feet, except 6 to 7 feet, occasionally to 9 feet west of the Marquesas Keys. Nearshore waters extremely rough. Scattered showers and isolated thunderstorms. .FRIDAY...Northeast winds near 25 knots. Seas 3 to 5 feet, occasionally to 6 feet, except 6 to 8 feet, occasionally to 10 feet west of the Marquesas Keys. Nearshore waters extremely rough. Numerous showers and isolated thunderstorms. .FRIDAY NIGHT AND SATURDAY...Northeast to east winds near 25 knots. Seas 3 to 5 feet, occasionally to 6 feet, except 6 to 8 feet, occasionally to 10 feet west of the Marquesas Keys. Nearshore waters extremely rough. Numerous showers and isolated thunderstorms. .SATURDAY NIGHT...Northeast to east winds near 25 knots. Seas 3 to 5 feet, occasionally to 6 feet, except 6 to 8 feet, occasionally to 10 feet west of the Marquesas Keys. Nearshore waters extremely rough. Scattered showers and isolated thunderstorms. .SUNDAY...Northeast to east winds 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet, except 6 to 7 feet, occasionally to 9 feet west of the Marquesas Keys. Nearshore waters very rough. Scattered showers. .SUNDAY NIGHT...Northeast winds 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. West of the Marquesas Keys, seas 5 to 6 feet, occasionally to 8 feet, subsiding to around 4 feet, occasionally to 5 feet. Nearshore waters very rough. Isolated showers. $$ GMZ042>044-160830- 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- 1029 PM EDT Tue Oct 15 2024 .OVERNIGHT...East to southeast winds near 5 knots, becoming northeast. Seas around 1 foot. Nearshore waters smooth. Scattered showers and isolated thunderstorms. .WEDNESDAY...North to northeast winds near 10 knots, increasing to near 15 knots in the afternoon. Seas around 1 foot, building to 1 to 2 feet. Nearshore waters a light chop, becoming a moderate chop. Scattered showers and isolated thunderstorms. .WEDNESDAY NIGHT...North to northeast winds 15 to 20 knots, becoming northeast and increasing to 20 to 25 knots after midnight. Seas 1 to 2 feet, building to 2 to 4 feet, occasionally to 5 feet. West of Cosgrove Shoal Light, seas 2 to 3 feet, building to 4 to 6 feet, occasionally to 8 feet. Nearshore waters choppy, becoming very rough. Scattered showers and isolated thunderstorms. .THURSDAY AND THURSDAY NIGHT...Northeast winds near 25 knots. Seas 3 to 5 feet, occasionally to 6 feet, except 5 to 7 feet, occasionally to 9 feet west of Cosgrove Shoal Light. Nearshore waters extremely rough. Scattered showers and isolated thunderstorms. .FRIDAY...Northeast winds near 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Nearshore waters extremely rough. Numerous showers and isolated thunderstorms. .FRIDAY NIGHT AND SATURDAY...Northeast to east winds near 25 knots. Seas 4 to 6 feet, occasionally to 8 feet, except 5 to 7 feet, occasionally to 9 feet west of Cosgrove Shoal Light. Nearshore waters extremely rough. Numerous showers and isolated thunderstorms. .SATURDAY NIGHT...Northeast to east winds near 25 knots. Seas 4 to 6 feet, occasionally to 8 feet, except 5 to 7 feet, occasionally to 9 feet west of Cosgrove Shoal Light. Nearshore waters extremely rough. Scattered showers and isolated thunderstorms. .SUNDAY...Northeast to east winds 20 to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet, except 5 to 7 feet, occasionally to 9 feet west of Cosgrove Shoal Light. Nearshore waters very rough. Scattered showers. .SUNDAY NIGHT...Northeast winds 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. West of Cosgrove Shoal Light, seas 5 to 6 feet, occasionally to 8 feet, subsiding to around 4 feet, occasionally to 5 feet. Nearshore waters very rough. Isolated showers. $$ GMZ052>055-072>075-160830- 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- 1029 PM EDT Tue Oct 15 2024 .OVERNIGHT...East to southeast winds 5 to 10 knots, becoming northeast. Seas 1 to 2 feet. Wave Detail: Northeast to east 1 foot at 4 seconds. Numerous showers and isolated thunderstorms. .WEDNESDAY...North to northeast winds near 10 knots, increasing to near 15 knots in the afternoon. Seas 1 to 2 feet, building to 2 to 3 feet. Wave Detail: North to northeast 2 feet at 3 seconds. Numerous showers and isolated thunderstorms. .WEDNESDAY NIGHT...Northeast winds 15 to 20 knots, increasing to 20 to 25 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 4 feet at 5 seconds, becoming northeast 6 feet at 6 seconds. Numerous showers and isolated thunderstorms. .THURSDAY...Northeast winds near 25 knots. Seas 6 to 9 feet, occasionally to 11 feet. Numerous showers and isolated thunderstorms. .THURSDAY NIGHT...Northeast winds near 25 knots. Seas 8 to 11 feet, occasionally to 14 feet. Numerous showers and isolated thunderstorms. .FRIDAY...Northeast to east winds near 25 knots. Seas 8 to 11 feet, occasionally to 14 feet. Widespread showers and isolated thunderstorms. .FRIDAY NIGHT...Northeast to east winds near 25 knots. Seas 7 to 10 feet, occasionally to 13 feet. Widespread showers and isolated thunderstorms. .SATURDAY...Northeast to east winds near 25 knots. Seas 7 to 9 feet, occasionally to 11 feet. Numerous showers and isolated thunderstorms. .SATURDAY NIGHT...Northeast to east winds near 25 knots. Seas 9 to 11 feet, occasionally to 14 feet. Numerous showers and isolated thunderstorms. .SUNDAY...Northeast to east winds near 25 knots. Seas 8 to 11 feet, occasionally to 14 feet. Scattered showers. .SUNDAY NIGHT...Northeast winds 20 to 25 knots. Seas 7 to 10 feet, occasionally to 13 feet, subsiding to 4 to 6 feet, occasionally to 8 feet. Scattered showers. $$ GMZ033-034-160830- Gulf waters from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel- 1029 PM EDT Tue Oct 15 2024 .OVERNIGHT...Variable winds near 5 knots, becoming north to northeast and increasing to near 10 knots. Seas around 1 foot. Scattered showers and isolated thunderstorms. .WEDNESDAY...North to northeast winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas 1 to 2 feet, building to 2 to 3 feet. Wave Detail: North 1 foot at 3 seconds, becoming northwest to north 3 feet at 4 seconds. Scattered showers and isolated thunderstorms. .WEDNESDAY NIGHT...North to northeast winds near 20 knots, becoming northeast and increasing to near 25 knots. Seas 3 to 5 feet, occasionally to 6 feet, building to 5 to 7 feet, occasionally to 9 feet. Wave Detail: North 4 feet at 5 seconds, becoming north to northeast 6 feet at 6 seconds. Isolated showers and thunderstorms. .THURSDAY...Northeast winds 20 to 25 knots. Seas 5 to 8 feet, occasionally to 10 feet. Isolated showers and thunderstorms. .THURSDAY NIGHT AND FRIDAY...Northeast winds near 25 knots. Seas 5 to 8 feet, occasionally to 10 feet. Scattered showers and isolated thunderstorms. .FRIDAY NIGHT...Northeast to east winds near 25 knots. Seas 6 to 8 feet, occasionally to 10 feet. Scattered showers and isolated thunderstorms. .SATURDAY AND SATURDAY NIGHT...Northeast to east winds near 25 knots. Seas 6 to 9 feet, occasionally to 11 feet. Scattered showers and isolated thunderstorms. .SUNDAY...Northeast to east winds near 25 knots, decreasing to 20 to 25 knots. Seas 5 to 8 feet, occasionally to 10 feet. Isolated showers. .SUNDAY NIGHT...Northeast winds 20 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 3 to 5 feet, occasionally to 6 feet. Isolated showers. $$