Coastal Waters Forecast
Issued by NWS Key West, FL
Issued by NWS Key West, FL
109 FZUS52 KKEY 201427 CWFKEY Coastal Waters Forecast for the Florida Keys National Weather Service Key West FL 1027 AM EDT Thu Jun 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. GMZ005-202030- Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas 1027 AM EDT Thu Jun 20 2024 .SYNOPSIS...Strong high pressure centered north of Bermuda working in tandem with Tropical Storm Alberto near the Bay of Campeche will result in moderate to fresh breezes through this evening. A second, weak area of low pressure currently east of the Bahamas will move west northwest, reaching the southeast U.S by late this evening or overnight. This, along with weakening Alberto over Mexico, will loosen the pressure gradient, leading to slackening east to southeast breezes for Friday through the first part of next week. The Approximate Shoreward Edge of the Gulf Stream as of June 19... 67 NM South of Dry Tortugas Light...on Loggerhead Key. 35 NM South of Cosgrove Shoal Light...off the Marquesas Keys. 28 NM South of Sand Key Light...off Key West. 29 NM South of Looe Key...off Big Pine Key. 34 NM South of Sombrero Key Light...off Marathon. 23 NM Southeast of Alligator Reef Light...off Islamorada. 19 NM Southeast of Molasses Reef Light...off Key Largo. Gulf Stream Information Courtesy of the National Weather Service in Key West. $$ GMZ031-202030- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- 1027 AM EDT Thu Jun 20 2024 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .THIS AFTERNOON...East winds 15 to 20 knots. Bay waters choppy. Scattered showers and isolated thunderstorms. .TONIGHT...Northeast to east winds near 15 knots. Bay waters a moderate chop. Isolated showers and thunderstorms. .FRIDAY...East winds near 15 knots. Bay waters a moderate chop. Scattered showers and isolated thunderstorms. .FRIDAY NIGHT...East to southeast winds near 15 knots. Bay waters a moderate chop. Scattered showers and isolated thunderstorms. .SATURDAY...East to southeast winds near 15 knots. Bay waters a moderate chop. Scattered showers and isolated thunderstorms. .SATURDAY NIGHT...East to southeast winds 10 to 15 knots. Bay waters a light to moderate chop. Scattered showers and isolated thunderstorms. .SUNDAY...East winds 10 to 15 knots. Bay waters a light to moderate chop. Scattered showers and isolated thunderstorms. .SUNDAY NIGHT...East winds near 10 knots. Bay waters a light chop. Scattered showers and isolated thunderstorms. .MONDAY...East to southeast winds near 10 knots. Bay waters a light chop. Scattered showers and isolated thunderstorms. .MONDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth to a light chop. Isolated showers and thunderstorms. $$ GMZ032-035-202030- 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- 1027 AM EDT Thu Jun 20 2024 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .THIS AFTERNOON...East winds 15 to 20 knots. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters choppy. Scattered showers and isolated thunderstorms. .TONIGHT...East winds 15 to 20 knots. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters choppy. Scattered showers and isolated thunderstorms. .FRIDAY...East winds 15 to 20 knots. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters choppy. Scattered showers and isolated thunderstorms. .FRIDAY NIGHT...East to southeast winds 15 to 20 knots, decreasing to near 15 knots. Seas 1 to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters choppy, becoming a moderate chop. Scattered showers and isolated thunderstorms. .SATURDAY...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. .SATURDAY NIGHT...East to southeast winds decreasing to 10 to 15 knots. Seas 1 to 2 feet. West of the Marquesas Keys, seas 2 to 3 feet, subsiding to around 2 feet Nearshore waters becoming a light to moderate chop. Scattered showers and isolated thunderstorms. .SUNDAY...East to southeast winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Scattered showers and isolated thunderstorms. .SUNDAY NIGHT...East to southeast winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. Scattered showers and isolated thunderstorms. .MONDAY...East to southeast winds decreasing to 5 to 10 knots. Seas around 1 foot. Nearshore waters becoming smooth to a light chop. Scattered showers and isolated thunderstorms. .MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers and thunderstorms. $$ GMZ042>044-202030- Hawk Channel from Ocean Reef to Craig Key out to the reef- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- 1027 AM EDT Thu Jun 20 2024 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .THIS AFTERNOON...East winds 15 to 20 knots. Seas subsiding to 2 to 4 feet, occasionally to 5 feet. Nearshore waters choppy. Scattered showers and isolated thunderstorms. .TONIGHT...East winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters choppy. Scattered showers and isolated thunderstorms. .FRIDAY...East winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters choppy. Scattered showers and isolated thunderstorms. .FRIDAY NIGHT...East to southeast winds 15 to 20 knots, decreasing to near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters choppy, becoming a moderate chop. Scattered showers and isolated thunderstorms. .SATURDAY...East to southeast winds near 15 knots. Seas 2 to 3 feet. Nearshore waters a moderate chop. Scattered showers and isolated thunderstorms. .SATURDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. Scattered showers and isolated thunderstorms. .SUNDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. Scattered showers and isolated thunderstorms. .SUNDAY NIGHT...East winds near 10 knots. Seas subsiding to 1 to 2 feet. Nearshore waters a light chop. Scattered showers and isolated thunderstorms. .MONDAY...East to southeast winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. Scattered showers and isolated thunderstorms. .MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. Isolated showers and thunderstorms. $$ GMZ052>055-072>075-202030- 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 Thu Jun 20 2024 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .THIS AFTERNOON...East winds 15 to 20 knots. Seas subsiding to 4 to 6 feet, occasionally to 7 feet. Wave Detail: East 5 feet at 6 seconds. Scattered showers and isolated thunderstorms. .TONIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 7 feet. Wave Detail: Northeast to east 5 feet at 6 seconds. Scattered showers and isolated thunderstorms. .FRIDAY...East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 6 seconds. Scattered showers and isolated thunderstorms. .FRIDAY NIGHT...East to southeast winds 15 to 20 knots, decreasing to near 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Scattered showers and isolated thunderstorms. .SATURDAY...East to southeast winds near 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers and isolated thunderstorms. .SATURDAY NIGHT...East to southeast winds near 15 knots, decreasing to 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers and isolated thunderstorms. .SUNDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers and isolated thunderstorms. .SUNDAY NIGHT...East to southeast winds near 10 knots. Seas 2 to 3 feet, subsiding to around 2 foot. Scattered showers and isolated thunderstorms. .MONDAY...East winds near 10 knots. Seas 1 to 2 feet. Scattered showers and isolated thunderstorms. .MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 1 foot. Isolated showers and thunderstorms. $$ GMZ033-034-202030- Gulf waters from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel- 1027 AM EDT Thu Jun 20 2024 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .THIS AFTERNOON...East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 5 seconds. Scattered showers and isolated thunderstorms. .TONIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 5 seconds. Scattered showers and isolated thunderstorms. .FRIDAY...East winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds. Scattered showers and isolated thunderstorms. .FRIDAY NIGHT...East to southeast winds 15 to 20 knots, decreasing to near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers and isolated thunderstorms. .SATURDAY...East to southeast winds near 15 knots. Seas 2 to 3 feet. Scattered showers and isolated thunderstorms. .SATURDAY NIGHT...East to southeast decreasing to 10 to 15 knots. Seas subsiding to around 2 feet. Scattered showers and isolated thunderstorms. .SUNDAY...East to southeast winds 10 to 15 knots. Seas around 2 feet. Scattered showers and isolated thunderstorms. .SUNDAY NIGHT...East to southeast winds near 10 knots. Seas 1 to 2 feet. Scattered showers and isolated thunderstorms. .MONDAY...East to southeast winds decreasing to 5 to 10 knots. Seas subsiding to around 1 foot. Scattered showers and isolated thunderstorms. .MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or less. Scattered showers and isolated thunderstorms. $$ LIW/BT