Coastal Waters Forecast
Issued by NWS Key West, FL
Issued by NWS Key West, FL
045 FZUS52 KKEY 210218 CWFKEY Coastal Waters Forecast for the Florida Keys National Weather Service Key West FL 1018 PM EDT Mon May 20 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. GMZ005-210900- Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas 1018 PM EDT Mon May 20 2024 .SYNOPSIS...Thunderstorm coverage has all but dissipated and breezes have clocked around to the west and northwest. Another round of showers and thunderstorms may develop overnight but with less coverage expected. Tuesday through Wednesday, breezes will gradually shift to the east as high pressure in the western North Atlantic builds back in across the region. Gentle east to southeast breezes will resume Friday through Saturday. The Approximate Shoreward Edge of the Gulf Stream as of May 15, 2024... 49 NM South of Dry Tortugas Light...on Loggerhead Key. 32 NM South of Cosgrove Shoal Light...off the Marquesas Keys. 24 NM South of Sand Key Light...off Key West. 27 NM South of Looe Key...off Big Pine Key. 29 NM South of Sombrero Key Light...off Marathon. 8 NM Southeast of Alligator Reef Light...off Islamorada. 3 NM Southeast of Molasses Reef Light...off Key Largo. Gulf Stream Information Courtesy of the National Weather Service in Key West. $$ GMZ031-210900- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- 1018 PM EDT Mon May 20 2024 .OVERNIGHT...West to northwest winds 5 to 10 knots, becoming northwest to north. Bay waters smooth to a light chop. Scattered showers and isolated thunderstorms. .TUESDAY...North winds near 5 knots, becoming variable. Bay waters smooth. Scattered showers and isolated thunderstorms. .TUESDAY NIGHT...East winds near 5 knots. Bay waters smooth. Scattered showers and isolated thunderstorms. .WEDNESDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Bay waters smooth to a light chop, becoming a light to moderate chop. Isolated showers and thunderstorms. .WEDNESDAY NIGHT...East winds 10 to 15 knots, decreasing to 5 to 10 knots. Bay waters a light to moderate chop, becoming smooth to a light chop. Scattered showers and isolated thunderstorms. .THURSDAY...Northeast to east winds near 10 knots. Bay waters a light chop. Isolated showers and thunderstorms. .THURSDAY NIGHT...East winds near 10 knots, decreasing to 5 to 10 knots. Bay waters a light chop, becoming smooth to a light chop. Isolated showers and thunderstorms. .FRIDAY THROUGH SATURDAY NIGHT...East to southeast winds 5 to 10 knots. Bay waters smooth to a light chop. Isolated showers and thunderstorms. $$ GMZ032-035-210900- 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- 1018 PM EDT Mon May 20 2024 .OVERNIGHT...West to northwest winds 5 to 10 knots, becoming northwest to north. Seas 1 foot or less. Nearshore waters smooth to a light chop. Scattered showers and isolated thunderstorms. .TUESDAY...North winds near 5 knots, becoming variable. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and isolated thunderstorms. .TUESDAY NIGHT...Variable winds near 5 knots, becoming east. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and isolated thunderstorms. .WEDNESDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots. Seas 1 foot or less, building to around 1 foot. Nearshore waters smooth to a light chop, becoming a light to moderate chop. Isolated showers and thunderstorms. .WEDNESDAY NIGHT...East winds 10 to 15 knots, decreasing to near 10 knots. Seas around 1 foot. Nearshore waters a light to moderate chop, becoming a light chop. Scattered showers and isolated thunderstorms. .THURSDAY...East winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. Isolated showers and thunderstorms. .THURSDAY NIGHT...East winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. Isolated showers and thunderstorms. .FRIDAY THROUGH SATURDAY NIGHT...East to southeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers and thunderstorms. $$ GMZ042>044-210900- Hawk Channel from Ocean Reef to Craig Key out to the reef- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- 1018 PM EDT Mon May 20 2024 .OVERNIGHT...West to northwest winds 5 to 10 knots, becoming northwest to north. Seas around 1 foot. Nearshore waters smooth to a light chop. Scattered showers and isolated thunderstorms. .TUESDAY...North winds near 5 knots, becoming variable. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and isolated thunderstorms. .TUESDAY NIGHT...Variable winds near 5 knots, becoming northeast to east. Seas 1 foot or less. Nearshore waters smooth. Scattered showers and isolated thunderstorms. .WEDNESDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas around 1 foot, building to 1 to 2 feet. Nearshore waters smooth to a light chop, becoming a light to moderate chop. Isolated showers and thunderstorms. .WEDNESDAY NIGHT...East to southeast winds 10 to 15 knots, becoming east near 10 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop, becoming a light chop. Isolated showers and thunderstorms. .THURSDAY...East winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. Isolated showers and thunderstorms. .THURSDAY NIGHT...East winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. Isolated showers and thunderstorms. .FRIDAY...East to southeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. Isolated showers and thunderstorms. .FRIDAY NIGHT THROUGH SATURDAY NIGHT...East to southeast winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. Isolated showers and thunderstorms. $$ GMZ052>055-072>075-210900- 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- 1018 PM EDT Mon May 20 2024 .OVERNIGHT...Northwest 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Northwest to north 1 foot at 4 seconds and northeast 1 foot at 3 seconds. Scattered showers and isolated thunderstorms. .TUESDAY...Variable winds near 5 knots. Seas around 1 foot. Wave Detail: North 1 foot at 2 seconds. Scattered showers and isolated thunderstorms. .TUESDAY NIGHT...Variable winds near 5 knots, becoming east. Seas around 1 foot. Scattered showers and isolated thunderstorms. .WEDNESDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots. Seas 1 to 2 feet, building to 1 to 3 feet. Isolated showers and thunderstorms. .WEDNESDAY NIGHT...East to southeast winds 10 to 15 knots, decreasing to 10 knots after midnight. Seas 2 to 3 feet, subsiding to around 2 feet. Isolated showers and thunderstorms. .THURSDAY...Northeast to east winds near 10 knots. Seas around 2 feet. Isolated showers and thunderstorms. .THURSDAY NIGHT...East winds 10 to 15 knots, decreasing to near 10 knots. Seas 2 to 3 feet. Isolated showers and thunderstorms. .FRIDAY...East winds 5 to 10 knots. Seas subsiding to 1 to 2 feet. Isolated showers and thunderstorms. .FRIDAY NIGHT THROUGH SATURDAY NIGHT...East winds near 10 knots. Seas around 2 feet. Isolated showers and thunderstorms. $$ GMZ033-034-210900- Gulf waters from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel- 1018 PM EDT Mon May 20 2024 .OVERNIGHT...Northwest 5 to 10 knots, becoming north knots. Seas 1 to 2 feet. Wave Detail: West to northwest 1 foot at 5 seconds and northwest to north 1 foot at 3 seconds. Scattered showers and isolated thunderstorms. .TUESDAY...North winds near 5 knots, becoming northwest to north. Seas around 1 foot. Wave Detail: Northwest to north 1 foot at 4 seconds. Scattered showers and isolated thunderstorms. .TUESDAY NIGHT...North to northeast winds near 5 knots, becoming east. Seas around 1 foot. Scattered showers and isolated thunderstorms. .WEDNESDAY...East winds 5 to 10 knots. Seas around 1 foot. Isolated showers and thunderstorms. .WEDNESDAY NIGHT...East to southeast winds near 10 knots. Seas 1 to 2 feet. Isolated showers and thunderstorms. .THURSDAY...East winds near 10 knots, becoming east to southeast 5 to 10 knots. Seas around 1 foot. Isolated showers and thunderstorms. .THURSDAY NIGHT...East to southeast winds 5 to 10 knots, increasing to near 10 knots. Seas around 1 foot. Isolated showers and thunderstorms. .FRIDAY...East to southeast winds 5 to 10 knots, decreasing to near 5 knots. Seas around 1 foot. Isolated showers and thunderstorms. .FRIDAY NIGHT THROUGH SATURDAY NIGHT...Southeast winds near 10 knots. Seas around 1 foot. Isolated showers and thunderstorms. $$