Coastal Waters Forecast
Issued by NWS Key West, FL
Issued by NWS Key West, FL
055 FZUS52 KKEY 152033 CWFKEY Coastal Waters Forecast for the Florida Keys National Weather Service Key West FL 433 PM EDT Sun Sep 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. GMZ005-160245- Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas 433 PM EDT Sun Sep 15 2024 .SYNOPSIS...Light and generally variable breezes will continue through Friday over the Florida Keys coastal waters. A developing low pressure system off the Carolina coast will generate a higher northerly swell off the Upper Keys for Tuesday and Wednesday. The low will deepen into an upper level trough and slowly slide south towards the Florida Peninsula by Friday. Unpredictability in the movement of this trough means confidence in the extended forecast is very low. The Approximate Shoreward Edge of the Gulf Stream as of September 10... 47 NM South of Dry Tortugas Light...on Loggerhead Key. 27 NM South of Cosgrove Shoal Light...off the Marquesas Keys. 22 NM South of Sand Key Light...off Key West. 19 NM South of Looe Key...off Big Pine Key. 18 NM South of Sombrero Key Light...off Marathon. 10 NM Southeast of Alligator Reef Light...off Islamorada. 6 NM Southeast of Molasses Reef Light...off Key Largo. 4 NM East of Carysfort Reef Light...off Ocean Reef. Gulf Stream Information Courtesy of the Naval Oceanographic Office. $$ GMZ031-160245- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- 433 PM EDT Sun Sep 15 2024 .TONIGHT...West winds near 5 knots, becoming south to southwest. Bay waters smooth. Scattered showers and isolated thunderstorms. .MONDAY...South to southwest winds near 5 knots. Bay waters smooth. Scattered showers and isolated thunderstorms. .MONDAY NIGHT...Variable winds near 5 knots. Bay waters smooth. Scattered showers and isolated thunderstorms. .TUESDAY...Variable winds near 5 knots, becoming southeast to south. Bay waters smooth. Scattered showers and thunderstorms. .TUESDAY NIGHT AND WEDNESDAY...East to southeast winds near 5 knots. Bay waters smooth. Scattered showers and thunderstorms. .WEDNESDAY NIGHT...East winds near 5 knots in the evening, becoming light and variable. Bay waters smooth. Scattered showers and thunderstorms. .THURSDAY...Variable winds near 5 knots. Bay waters smooth. Scattered showers and isolated thunderstorms. .THURSDAY NIGHT...Variable winds near 5 knots, becoming south to southwest. Bay waters smooth. Scattered showers and isolated thunderstorms. .FRIDAY...Southwest to west winds near 5 knots. Bay waters smooth. Scattered showers and isolated thunderstorms. .FRIDAY NIGHT...Variable winds near 5 knots. Bay waters smooth. Scattered showers and isolated thunderstorms. $$ GMZ032-035-160245- 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- 433 PM EDT Sun Sep 15 2024 .TONIGHT...West to northwest winds near 5 knots, becoming variable. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and isolated thunderstorms. .MONDAY AND MONDAY NIGHT...Variable winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and isolated thunderstorms. .TUESDAY...East to southeast winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and thunderstorms. .TUESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Scattered showers and thunderstorms. .WEDNESDAY...East to southeast winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and thunderstorms. .WEDNESDAY NIGHT...Northeast to east winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and thunderstorms. .THURSDAY...North winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and isolated thunderstorms. .THURSDAY NIGHT AND FRIDAY...Northwest to north winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and isolated thunderstorms. .FRIDAY NIGHT...West to northwest winds near 5 knots, becoming variable. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and isolated thunderstorms. $$ GMZ042>044-160245- Hawk Channel from Ocean Reef to Craig Key out to the reef- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- 433 PM EDT Sun Sep 15 2024 .TONIGHT...Variable winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and isolated thunderstorms. .MONDAY...South to southwest winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and isolated thunderstorms. .MONDAY NIGHT...Variable winds near 5 knots, becoming east to southeast. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and isolated thunderstorms. .TUESDAY...East to southeast winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and thunderstorms. .TUESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. Scattered showers and thunderstorms. .WEDNESDAY...East to southeast winds near 5 knots. Seas around 1 foot. Nearshore waters smooth. Scattered showers and thunderstorms. .WEDNESDAY NIGHT...Northeast to east winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and thunderstorms. .THURSDAY...Variable winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and isolated thunderstorms. .THURSDAY NIGHT...Variable winds near 5 knots, becoming southwest to west. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and isolated thunderstorms. .FRIDAY AND FRIDAY NIGHT...Variable winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and isolated thunderstorms. $$ GMZ052>055-072>075-160245- 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- 433 PM EDT Sun Sep 15 2024 .TONIGHT...Variable winds near 5 knots, becoming southeast to south. Seas around 1 foot. Isolated showers and thunderstorms. .MONDAY...Southeast to south winds near 5 knots. Seas around 1 foot. Scattered showers and isolated thunderstorms. .MONDAY NIGHT...Variable winds near 5 knots, becoming east to southeast. Seas around 1 foot, except building to 1 to 2 feet off the Upper Keys due to northerly swell. Scattered showers and isolated thunderstorms. .TUESDAY...East winds near 5 knots. Seas around 1 foot, except 1 to 2 feet off the Upper Keys due to northerly swell. Numerous showers and scattered thunderstorms. .TUESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas 1 to 2 feet. Scattered showers and thunderstorms. .WEDNESDAY...East to southeast winds near 5 knots. Seas subsiding to around 1 foot. Scattered showers and thunderstorms. .WEDNESDAY NIGHT...East winds near 5 knots, becoming variable. Seas around 1 foot. Scattered showers and thunderstorms. .THURSDAY AND THURSDAY NIGHT...Variable winds near 5 knots. Seas around 1 foot. Scattered showers and isolated thunderstorms. .FRIDAY...Variable winds near 5 knots, becoming northwest to north. Seas around 1 foot. Scattered showers and isolated thunderstorms. .FRIDAY NIGHT...Variable winds near 5 knots. Seas around 1 foot. Scattered showers and isolated thunderstorms. $$ GMZ033-034-160245- Gulf waters from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel- 433 PM EDT Sun Sep 15 2024 .TONIGHT...Northwest to north winds near 5 knots, becoming variable. Seas around 1 foot. Wave Detail: West to northwest 1 foot at 4 seconds. Isolated showers and thunderstorms. .MONDAY...Variable winds near 5 knots, becoming northwest to north. Seas 1 foot or less. Wave Detail: West to northwest 1 foot at 4 seconds. Scattered showers and isolated thunderstorms. .MONDAY NIGHT...Northeast winds near 5 knots, becoming east. Seas 1 foot or less. Scattered showers and isolated thunderstorms. .TUESDAY...East to southeast winds near 5 knots. Seas 1 foot or less. Scattered showers and thunderstorms. .TUESDAY NIGHT...East to southeast winds near 5 knots, increasing to 5 to 10 knots. Seas building to around 1 foot. Scattered showers and thunderstorms. .WEDNESDAY...East to southeast winds near 5 knots. Seas subsiding to 1 foot or less. Scattered showers and thunderstorms. .WEDNESDAY NIGHT...Variable winds near 5 knots, becoming northeast. Seas 1 foot or less. Scattered showers and thunderstorms. .THURSDAY AND THURSDAY NIGHT...North winds near 5 knots. Seas 1 foot or less. Scattered showers and isolated thunderstorms. .FRIDAY...Northwest to north winds near 5 knots. Seas 1 foot or less. Scattered showers and isolated thunderstorms. .FRIDAY NIGHT...North to northeast winds near 5 knots, becoming variable. Seas 1 foot or less. Scattered showers and isolated thunderstorms. $$ AJP