NWS Marine Forecast


   GMZ005-280330-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  1026 AM EST Fri Feb 27 2026      .SYNOPSIS...  Light to gentle east to southeasterly breezes across the Keys  coastal waters this afternoon will gradually slacken this evening  and overnight. An Atlantic ridge will shift further eastward in  response to a couple of frontal systems stalling over northern  Florida. As a col develops we could expect a period of light and  variable winds on Saturday. A Cuban Shadow will keep shower  coverage limited during this period. Next week, a broad high  pressure system is forecast to migrate into the eastern United  States, which would support rapidly freshening breezes across the  southern waters.    The Approximate Shoreward Edge of the Gulf Stream as of February  26...    14 NM South of Dry Tortugas Light...on Loggerhead Key.  4 NM South of Cosgrove Shoal Light...off the Marquesas Keys.  2 NM South of Sand Key Light...off Key West.  9 NM South of Looe Key...off Big Pine Key.  14 NM Southeast of Sombrero Key Light...off Marathon.  12 NM Southeast of Alligator Reef Light...off Islamorada.  5 NM Southeast of Molasses Reef Light...off Key Largo.  3 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 and RTOFS.    $$
   GMZ033-034-280330-  Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM  out and beyond 5 fathoms-  Gulf of America including Dry Tortugas and Rebecca Shoal Channel-  1026 AM EST Fri Feb 27 2026    THIS AFTERNOON  Southeast winds 5 to 10 knots. Seas 1 to  2 feet. Wave Detail: East to southeast 1 foot at 3 seconds.  TONIGHT  East to southeast winds 5 to 10 knots. Seas subsiding  to around 1 foot. Wave Detail: East to southeast 1 foot at 3  seconds and west to northwest 1 foot at 8 seconds. Scattered  showers.  SATURDAY  East to southeast winds near 5 knots. Seas around 1  foot. Wave Detail: East to southeast 1 foot at 2 seconds and west  to northwest 1 foot at 7 seconds. Isolated showers.  SATURDAY NIGHT AND SUNDAY  North to northeast winds 5 to 10  knots. Seas around 1 foot. Isolated showers.  SUNDAY NIGHT  Northeast to east winds 5 to 10 knots, increasing  to 10 to 15 knots. Seas building to 1 to 2 feet.  MONDAY  Northeast to east winds 10 to 15 knots. Seas building to 1  to 3 feet.  MONDAY NIGHT  Northeast to east winds 10 to 15 knots, increasing  to 15 to 20 knots. Seas building to 2 to 4 feet, occasionally to 5  feet.  TUESDAY  Northeast to east winds 15 to 20 knots, decreasing to  near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet.  TUESDAY NIGHT  Northeast to east winds 15 to 20 knots. Seas  2 to 4 feet, occasionally to 5 feet. Isolated showers.    $$