FZUS52 KKEY 240238 CWFKEY Coastal Waters Forecast for the Florida Keys National Weather Service Key West FL 1038 PM EDT Fri May 23 2025 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. GMZ005-241445- Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas 1038 PM EDT Fri May 23 2025 .SYNOPSIS...Light to gentle breezes across the Florida Keys will prevail through Saturday. Shower and thunderstorm chances increase over the weekend into next week as a low pressure system over the eastern CONUS moves into the Atlantic and breezes shift southeasterly. Breezes may freshen to moderate to fresh over the Straits of Florida early next week. The Approximate Shoreward Edge of the Gulf Stream as of May 23rd... 51 NM South of Dry Tortugas Light...on Loggerhead Key. 21 NM South of Cosgrove Shoal Light...off the Marquesas Keys. 16 NM South of Sand Key Light...off Key West. 8 NM South of Looe Key...off Big Pine Key. 8 NM South of Sombrero Key Light...off Marathon. 8 NM Southeast of Alligator Reef Light...off Islamorada. 4 NM Southeast of Molasses Reef Light...off Key Largo. 2 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 NASA SPoRT. $$ GMZ031-241445- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- 1038 PM EDT Fri May 23 2025 .OVERNIGHT...East to southeast winds 5 to 10 knots. Bay waters smooth to a light chop. Isolated showers and thunderstorms. .SATURDAY...East to southeast winds 5 to 10 knots. Bay waters smooth to a light chop. Scattered showers and isolated thunderstorms. .SATURDAY NIGHT...Northeast to east winds 5 to 10 knots, becoming east and increasing to 10 to 15 knots. Bay waters smooth to a light chop, becoming a light to moderate chop. Scattered showers and isolated thunderstorms. .SUNDAY...East to southeast winds 10 to 15 knots. Bay waters a light to moderate chop. Scattered showers and isolated thunderstorms. .SUNDAY NIGHT AND MONDAY...East to southeast winds 10 to 15 knots. Bay waters a light to moderate chop. Scattered showers and isolated thunderstorms. .MONDAY NIGHT...East to southeast winds near 15 knots. Bay waters a moderate chop. Isolated showers and thunderstorms. .TUESDAY...East to southeast winds 10 to 15 knots. Bay waters a light to moderate chop. Isolated showers and thunderstorms. .TUESDAY NIGHT...East to southeast winds near 15 knots. Bay waters a moderate chop. Isolated showers and thunderstorms. $$ GMZ032-035-241445- 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- 1038 PM EDT Fri May 23 2025 .OVERNIGHT...Variable winds 5 to 10 knots, becoming east to southeast. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers and thunderstorms. .SATURDAY...East to southeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Scattered showers and isolated thunderstorms. .SATURDAY NIGHT...East winds near 10 knots, increasing to 10 to 15 knots. Seas building to around 1 foot. Nearshore waters a light chop, becoming a light to moderate chop. Scattered showers and isolated thunderstorms. .SUNDAY...East to southeast winds 10 to 15 knots. Seas 1 to 2 foot. Nearshore waters a light to moderate chop. Isolated showers and thunderstorms. .SUNDAY NIGHT...East to southeast winds near 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a moderate chop. Scattered showers and isolated thunderstorms. .MONDAY...East to southeast winds near 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a moderate chop. Isolated showers and thunderstorms. .MONDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 1 to 2 feet, except 2 to 4 feet west of the Marquesas Keys. Nearshore waters choppy. Isolated showers and thunderstorms. .TUESDAY AND TUESDAY NIGHT...East to southeast winds near 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a moderate chop. Isolated showers and thunderstorms. $$ GMZ042>044-241445- Hawk Channel from Ocean Reef to Craig Key out to the reef- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- 1038 PM EDT Fri May 23 2025 .OVERNIGHT...East to southeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. Isolated showers and thunderstorms. .SATURDAY...East to southeast winds 5 to 10 knots, increasing to near 10 knots. Seas around 1 foot, building to 1 to 2 feet. Nearshore waters smooth to a light chop, becoming a light chop. Isolated showers and thunderstorms. .SATURDAY NIGHT AND SUNDAY...East to southeast winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Isolated showers and thunderstorms. .SUNDAY NIGHT...East to southeast winds near 15 knots. Seas 2 to 3 feet. Nearshore waters a moderate chop. Scattered showers and isolated thunderstorms. .MONDAY...East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. Isolated showers and thunderstorms. .MONDAY NIGHT...East to southeast winds near 15 knots, increasing to 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters a moderate chop, becoming choppy. Isolated showers and thunderstorms. .TUESDAY AND TUESDAY NIGHT...East to southeast winds near 15 knots. Seas 2 to 3 feet. Nearshore waters a moderate chop. Isolated showers and thunderstorms. $$ GMZ052>055-072>075-241445- 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- 1038 PM EDT Fri May 23 2025 .OVERNIGHT...East winds 5 to 10 knots. Seas around 1 foot, building to 1 to 2 feet. Wave Detail: East 2 feet at 4 seconds. Isolated showers and thunderstorms. .SATURDAY...East winds near 10 knots, increasing to 10 to 15 knots. Seas 1 to 2 feet. Wave Detail: East 2 feet at 4 seconds. Isolated showers and thunderstorms. .SATURDAY NIGHT...East winds 10 to 15 knots. Seas building to 2 to 3 feet. Scattered showers and isolated thunderstorms. .SUNDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Isolated showers and thunderstorms. .SUNDAY NIGHT AND MONDAY...East to southeast winds near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Isolated showers and thunderstorms. .MONDAY NIGHT...East to southeast winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Isolated showers and thunderstorms. .TUESDAY...East to southeast winds near 15 knots. Seas subsiding to 2 to 4 feet, occasionally to 5 feet. Isolated showers and thunderstorms. .TUESDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Isolated showers and thunderstorms. $$ GMZ033-034-241445- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 1038 PM EDT Fri May 23 2025 .OVERNIGHT...Variable winds 5 to 10 knots, becoming east to southeast. Seas around 1 foot. Wave Detail: East to southeast 1 foot at 2 seconds and northwest to north 1 foot at 4 seconds. Isolated showers and thunderstorms. .SATURDAY...East to southeast winds 5 to 10 knots. Seas around 1 foot. Wave Detail: East to southeast 1 foot at 2 seconds and northwest to north 1 foot at 4 seconds. Isolated showers and thunderstorms. .SATURDAY NIGHT...Northeast to east winds 5 to 10 knots, becoming east and increasing to 10 to 15 knots. Seas 1 to 2 feet. Isolated showers and thunderstorms. .SUNDAY...East to southeast winds near 10 knots. Seas 1 to 2 feet. Isolated showers and thunderstorms. .SUNDAY NIGHT...East to southeast winds 10 to 15 knots. Seas building to 2 to 3 feet. Scattered showers and isolated thunderstorms. .MONDAY...East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. Isolated showers and thunderstorms. .MONDAY NIGHT...East to southeast winds 10 to 15 knots, increasing to near 15 knots. Seas 2 to 4 feet. Isolated showers and thunderstorms. .TUESDAY AND TUESDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. Isolated showers and thunderstorms. $$ DP/AP