NWS Marine Forecast


   GMZ005-032315-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  614 AM EST Wed Dec 3 2025      .SYNOPSIS...A cold frontal system extending from Cape Hatteras to  the middle of the Gulf will meander across the Florida Keys today  and tonight. Breezes will veer northeasterly and freshen tonight  and Thursday. High pressure building over the Ohio Valley will  cause winds to veer southeasterly and slacken over the weekend.  Another frontal passage is possible towards the beginning of next  week.    The Approximate Shoreward Edge of the Gulf Stream as of November  28...    28 NM South of Dry Tortugas Light...on Loggerhead Key.  20 NM South of Cosgrove Shoal Light...off the Marquesas Keys.  17 NM South of Sand Key Light...off Key West.  15 NM South of Looe Key...off Big Pine Key.  15 NM Southeast of Sombrero Key Light...off Marathon.  10 NM Southeast of Alligator Reef Light...off Islamorada.  9 NM Southeast of Molasses Reef Light...off Key Largo.  8 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.    $$
   GMZ042>044-032315-  Hawk Channel from Ocean Reef to Craig Key out to the reef-  Hawk Channel from Craig Key to west end of Seven Mile Bridge out  to the reef-  Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal  out to the reef-  614 AM EST Wed Dec 3 2025    TODAY  North winds 5 to 10 knots. Seas around 1 foot, except  building to 1 to 2 feet west of Cosgrove Shoal Light. Nearshore  waters smooth to a light chop.  TONIGHT  North to northeast winds near 10 knots, increasing to 10  to 15 knots. Seas 1 to 2 feet, except building to 2 to 3 feet  west of Cosgrove Shoal Light. Nearshore waters a light chop,  building to a light to moderate chop.  THURSDAY  Northeast to east winds 10 to 15 knots. Seas 1 to  2 feet, except subsiding to around 2 feet west of Cosgrove Shoal  Light. Nearshore waters a light to moderate chop.  THURSDAY NIGHT  Northeast to east winds 10 to 15 knots. Seas  around 2 feet. Nearshore waters a light to moderate chop.  FRIDAY  East to southeast winds 10 to 15 knots, decreasing to  near 10 knots. Seas subsiding to 1 to 2 feet. Nearshore waters a  light to moderate chop, becoming a light chop.  FRIDAY NIGHT  East to southeast winds near 10 knots. Seas 1 to  2 feet. Nearshore waters a light chop.  SATURDAY  Southeast winds near 10 knots. Seas around 1 foot.  Nearshore waters a light chop. Isolated showers.  SATURDAY NIGHT  Southeast to south winds 5 to 10 knots,  increasing to near 10 knots. Seas around 1 foot. Nearshore waters  smooth to a light chop, becoming a light chop. Isolated showers.  SUNDAY  South to southwest winds 10 to 15 knots. Seas 1 to 2  feet. Nearshore waters a light to moderate chop. Scattered  showers.  SUNDAY NIGHT  Southwest to west winds near 10 knots. Seas  1 to 2 feet, except building to around 2 feet west of Cosgrove  Shoal Light. Nearshore waters a light chop. Scattered showers.    $$