Coastal Waters Forecast
Issued by NWS Key West, FL
Issued by NWS Key West, FL
604 FZUS52 KKEY 192028 CWFKEY Coastal Waters Forecast for the Florida Keys National Weather Service Key West FL 428 PM EDT Sat Oct 19 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. GMZ005-200230- Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas 428 PM EDT Sat Oct 19 2024 .SYNOPSIS...A large high pressure ridge over the Eastern United States and the development of Tropical Storm Nadine and Hurricane Oscar southwest and southeast of the Florida Keys coastal waters will sustain fresh to strong northeasterly breezes tonight. Breezes will slacken over the first half of the week as the high pressure system weakens and the two tropical systems move further away from the Florida Keys. The Approximate Shoreward Edge of the Gulf Stream as of October 16... 18 NM South of Dry Tortugas Light...on Loggerhead Key. 11 NM South of Cosgrove Shoal Light...off the Marquesas Keys. 11 NM South of Sand Key Light...off Key West. 28 NM South of Looe Key...off Big Pine Key. 38 NM South of Sombrero Key Light...off Marathon. 19 NM Southeast of Alligator Reef Light...off Islamorada. 11 NM Southeast of Molasses Reef Light...off Key Largo. 9 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 the Real Time Ocean Forecast System. $$ GMZ031-200230- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- 428 PM EDT Sat Oct 19 2024 ...SMALL CRAFT ADVISORY IN EFFECT... .TONIGHT...Northeast winds near 20 knots. Bay waters rough. Isolated showers. .SUNDAY...Northeast winds 15 to 20 knots. Bay waters choppy. Isolated showers. .SUNDAY NIGHT...Northeast winds near 15 to 20 knots. Bay waters choppy. Isolated showers. .MONDAY...Northeast winds near 15 knots. Bay waters a moderate chop. Isolated showers. .MONDAY NIGHT AND TUESDAY...Northeast winds 10 to 15 knots. Bay waters a light to moderate chop. Isolated showers. .TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Northeast winds near 15 knots. Bay waters a moderate chop. Isolated showers. .THURSDAY...Northeast winds near 10 knots. Bay waters a light chop. Isolated showers. .THURSDAY NIGHT...Northeast to east winds 10 to 15 knots. Bay waters a light to moderate chop. Isolated showers. $$ GMZ032-035-200230- 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- 428 PM EDT Sat Oct 19 2024 ...SMALL CRAFT ADVISORY IN EFFECT... .TONIGHT...Northeast winds 20 to 25 knots, decreasing to near 20 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 5 to 6 feet, occasionally to 8 feet west of the Marquesas Keys. Nearshore waters very rough, becoming rough. Isolated showers. .SUNDAY...Northeast winds near 20 knots, becoming northeast to east near 15 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. West of the Marquesas Keys, seas 5 to 6 feet, occasionally to 8 feet, subsiding to 3 to 4 feet, occasionally to 5 feet in the afternoon. Nearshore waters rough, becoming a moderate chop. Isolated showers. .SUNDAY NIGHT...Northeast winds increasing to 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. Isolated showers. .MONDAY...Northeast winds 15 to 20 knots. Seas 2 to 3 feet, occasionally to 5 feet, except 4 to 5 feet, occasionally to 6 feet west of the Marquesas Keys. Nearshore waters choppy. Isolated showers. .MONDAY NIGHT...Northeast winds 15 to 20 knots. Seas 2 to 3 feet. Nearshore waters choppy. Isolated showers. .TUESDAY...North to northeast winds near 15 knots. Seas 1 to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters a moderate chop. Isolated showers. .TUESDAY NIGHT...Northeast winds near 15 knots. Seas 1 to 3 feet. Nearshore waters a moderate chop. Isolated showers. .WEDNESDAY...Northeast winds 10 to 15 knots. Seas 1 to 2 feet, except around 3 feet west of the Marquesas Keys. Nearshore waters a light to moderate chop Isolated showers. .WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Northeast winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Isolated showers. $$ GMZ042>044-200230- Hawk Channel from Ocean Reef to Craig Key out to the reef- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- 428 PM EDT Sat Oct 19 2024 ...SMALL CRAFT ADVISORY IN EFFECT... .TONIGHT...Northeast winds 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet, except 5 to 6 feet, occasionally to 8 feet west of Cosgrove Shoal Light. Nearshore waters very rough. Isolated showers. .SUNDAY...Northeast winds near 20 knots. Seas 3 to 4 feet, occasionally to 5 feet, except 4 to 6 feet, occasionally to 8 feet west of Cosgrove Shoal Light. Nearshore waters rough. Isolated showers. .SUNDAY NIGHT...Northeast winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters choppy. Isolated showers. .MONDAY...Northeast winds 15 to 20 knots. Seas 2 to 4 feet, except 3 to 5 feet, occasionally to 6 feet west of Cosgrove Shoal Light. Nearshore waters choppy. Isolated showers. .MONDAY NIGHT AND TUESDAY...Northeast winds 15 to 20 knots. Seas 2 to 4 feet. Nearshore waters choppy. Isolated showers. .TUESDAY NIGHT...Northeast winds near 15 knots. Seas 2 to 3 feet. Nearshore waters a moderate chop. Isolated showers. .WEDNESDAY...Northeast winds 10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of Cosgrove Shoal Light. Nearshore waters a light to moderate chop. Isolated showers. .WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Northeast winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Isolated showers. $$ GMZ052>055-072>075-200230- 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- 428 PM EDT Sat Oct 19 2024 ...SMALL CRAFT ADVISORY IN EFFECT... .TONIGHT...Northeast winds near 25 knots. Seas 7 to 10 feet, occasionally to 13 feet. Wave Detail: Northeast to east 10 feet at 8 seconds. Scattered showers. .SUNDAY...Northeast winds 20 to 25 knots, becoming near 20 knots. Seas 6 to 9 feet, occasionally to 11 feet, subsiding to 5 to 7 feet, occasionally to 9 feet in the afternoon. Wave Detail: Northeast to east 8 feet at 7 seconds, becoming northeast 7 feet at 7 seconds. Isolated showers. .SUNDAY NIGHT...Northeast winds near 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 6 seconds. Scattered showers. .MONDAY AND MONDAY NIGHT...Northeast winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Isolated showers. .TUESDAY...Northeast winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 7 feet. Isolated showers. .TUESDAY NIGHT...Northeast winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 7 feet. Isolated showers. .WEDNESDAY THROUGH THURSDAY NIGHT...Northeast winds near 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Isolated showers. $$ GMZ033-034-200230- Gulf waters from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel- 428 PM EDT Sat Oct 19 2024 ...SMALL CRAFT ADVISORY IN EFFECT... .TONIGHT...Northeast to east winds 20 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast to east 6 feet at 5 seconds. Isolated showers. .SUNDAY...Northeast winds 20 to 25 knots, becoming 15 to 20 knots. Seas 4 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 6 feet at 5 seconds. Isolated showers. .SUNDAY NIGHT...Northeast winds increasing to 20 knots. Seas 4 to 6 feet, occasionally to 7 feet. Wave Detail: North to northeast 4 feet at 5 seconds. Isolated showers. .MONDAY...Northeast winds decreasing to 15 to 20 knots. Seas 3 to 5 feet, occasionally to 7 feet. Isolated showers. .MONDAY NIGHT...Northeast winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Isolated showers. .TUESDAY...Northeast winds 15 to 20 knots, decreasing to 10 to 15 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Isolated showers. .TUESDAY NIGHT...Northeast winds 15 to 20 knots. Seas 2 to 5 feet, occasionally to 6 feet. Isolated showers. .WEDNESDAY...North to northeast winds decreasing to 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Isolated showers. .WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Isolated showers. $$ AJP