FZUS52 KKEY 251427 CWFKEY Coastal Waters Forecast for the Florida Keys National Weather Service Key West FL 1027 AM EDT Sat Apr 25 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. GMZ005-260230- Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas 1027 AM EDT Sat Apr 25 2026 .SYNOPSIS...Weak high pressure over the western North Atlantic will maintain generally light to gentle east to southeast breezes for the next several days, becoming light and variable at times. The Approximate Shoreward Edge of the Gulf Stream as of April 22... 19 NM South of Dry Tortugas Light...on Loggerhead Key. 11 NM South of Cosgrove Shoal Light...off the Marquesas Keys. 8 NM South of Sand Key Light...off Key West. 13 NM South of Looe Key...off Big Pine Key. 19 NM Southeast of Sombrero Key Light...off Marathon. 24 NM Southeast of Alligator Reef Light...off Islamorada. 26 NM Southeast of Molasses Reef Light...off Key Largo. 14 NM Southeast of Carysfort Reef Light...off Ocean Reef. Gulf Stream Information Courtesy of the National Weather Service in Key West based on products from NASA SPoRT and RTOFS. $$ GMZ031-260230- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- 1027 AM EDT Sat Apr 25 2026 .THIS AFTERNOON...Southeast winds near 5 knots. Bay waters smooth. A slight chance of showers. .TONIGHT...East to southeast winds 5 to 10 knots. Bay waters smooth to a light chop. .SUNDAY...Southeast to south winds 5 to 10 knots. Bay waters smooth to a light chop. .SUNDAY NIGHT AND MONDAY...Variable winds near 5 knots. Bay waters smooth. .MONDAY NIGHT...Variable winds near 5 knots, becoming northeast to east and increasing to 5 to 10 knots. Bay waters smooth, becoming smooth to a light chop. .TUESDAY...Northeast to east winds near 10 knots. Bay waters a light chop. .TUESDAY NIGHT...Northeast to east winds near 10 knots, decreasing to 5 to 10 knots. Bay waters a light chop, becoming smooth to a light chop. .WEDNESDAY...East to southeast winds 5 to 10 knots. Bay waters smooth to a light chop. .WEDNESDAY NIGHT...Southeast winds near 5 knots. Bay waters smooth. $$ GMZ032-035-260230- 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- 1027 AM EDT Sat Apr 25 2026 .THIS AFTERNOON...Southeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. A slight chance of showers. .TONIGHT...East to southeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. .SUNDAY...Southeast winds 5 to 10 knots, becoming variable and decreasing to near 5 knots. Seas around 1 foot, subsiding to 1 foot or less. Nearshore waters smooth to a light chop, becoming smooth. .SUNDAY NIGHT AND MONDAY...Variable winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. .MONDAY NIGHT...Variable winds near 5 knots, becoming northeast to east and increasing to 5 to 10 knots after midnight. Seas 1 foot or less, building to around 1 foot. Nearshore waters smooth, becoming smooth to a light chop. .TUESDAY...East winds near 10 knots. Seas around 1 foot, except 1 to 2 feet west of the Marquesas Keys. Nearshore waters a light chop. .TUESDAY NIGHT...Eastwinds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. .WEDNESDAY...East to southeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. .WEDNESDAY NIGHT...East to southeast winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. $$ GMZ042>044-260230- Hawk Channel from Ocean Reef to Craig Key out to the reef- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- 1027 AM EDT Sat Apr 25 2026 .THIS AFTERNOON...Southeast winds 5 to 10 knots. Seas subsiding to around 1 foot. Nearshore waters smooth to a light chop. A slight chance of showers. .TONIGHT...East to southeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. .SUNDAY...Southeast winds 5 to 10 knots, becoming variable and decreasing to near 5 knots. Seas around 1 foot. Nearshore waters smooth to a light chop, becoming smooth. .SUNDAY NIGHT...Variable winds near 5 knots. Seas around 1 foot. Nearshore waters smooth. .MONDAY...Variable winds near 5 knots. Seas around 1 foot. Nearshore waters smooth. A slight chance of showers. .MONDAY NIGHT...Variable winds near 5 knots, becoming northeast to east and increasing to 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth, becoming smooth to a light chop. .TUESDAY...Northeast to east winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. .TUESDAY NIGHT...East winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. .WEDNESDAY...East winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. .WEDNESDAY NIGHT...East to southeast winds near 5 knots. Seas around 1 foot. Nearshore waters smooth. $$ GMZ052>055-072>075-260230- 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- 1027 AM EDT Sat Apr 25 2026 .THIS AFTERNOON...East to southeast winds near 10 knots, decreasing to 5 to 10 knots. Seas around 2 feet, subsiding to 1 to 2 feet. Wave Detail: East to southeast 2 feet at 4 seconds. A slight chance of showers. .TONIGHT...East to southeast winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: East to southeast 2 feet at 4 seconds. .SUNDAY...Southeast winds 5 to 10 knots, becoming east to southeast and decreasing to near 5 knots. Seas 1 to 2 feet. Wave Detail: East to southeast 1 foot at 4 seconds. .SUNDAY NIGHT...East winds 5 to 10 knots, becoming east to southeast. Seas 1 to 2 feet. .MONDAY...East to southeast winds near 5 knots, becoming northeast to east and increasing to 5 to 10 knots in the afternoon. Seas 1 to 2 feet. A slight chance of showers. .MONDAY NIGHT...Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet. .TUESDAY...Northeast to east winds near 10 knots. Seas around 2 feet. .TUESDAY NIGHT...Northeast to east winds 10 to 15 knots, decreasing to near 10 knots. Seas 2 to 3 feet. .WEDNESDAY...East winds 5 to 10 knots. Seas around 2 feet. .WEDNESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas 1 to 2 feet. $$ GMZ033-034-260230- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 1027 AM EDT Sat Apr 25 2026 .THIS AFTERNOON...Southeast winds 5 to 10 knots, decreasing to near 5 knots. Seas around 1 foot. Wave Detail: East to southeast 1 foot at 3 seconds. A slight chance of showers. .TONIGHT...East to southeast winds near 5 knots, becoming southeast and increasing to 5 to 10 knots after midnight. Seas around 1 foot. Wave Detail: East to southeast 1 foot at 3 seconds. .SUNDAY...Southeast winds near 10 knots, becoming variable and decreasing to near 5 knots in the afternoon. Seas around 1 foot. Wave Detail: Southeast 1 foot at 3 seconds. .SUNDAY NIGHT...Variable winds near 5 knots. Seas 1 foot or less. .MONDAY...Northeast to east winds near 5 knots. Seas 1 foot or less. .MONDAY NIGHT...North to northeast winds 5 to 10 knots, becoming northeast to east and increasing to near 10 knots. Seas around 1 foot. .TUESDAY...East winds near 10 knots, decreasing to 5 to 10 knots. Seas 1 to 2 feet. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 1 foot. .WEDNESDAY...East to southeast winds 5 to 10 knots. Seas around 1 foot. .WEDNESDAY NIGHT...Variable winds near 5 knots. Seas 1 foot or less. $$