NWS Marine Forecast


   GMZ005-010000-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  648 AM EST Sat Feb 28 2026      .SYNOPSIS...  An Atlantic ridge across South Florida will pull further east  while a frontal boundary stalls across north central Florida. The  combination of these features will result in light breezes likely  becoming variable this afternoon. Thereafter, a broad high  pressure system is forecast to migrate into the eastern United  States, then out into the Atlantic. This is expected to support  freshening breezes, especially across the Straits of Florida.  A mix of Cautions and Advisories is becoming increasingly likely  for the bulk of the work week.    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.    $$
   GMZ033-034-010000-  Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM  out and beyond 5 fathoms-  Gulf of America including Dry Tortugas and Rebecca Shoal Channel-  648 AM EST Sat Feb 28 2026    Updated first period fog timing    TODAY  Southeast to south winds near 5 knots, becoming northwest  late. Seas around 1 foot. Wave Detail: West to northwest 1 foot at  7 seconds. Patchy fog. Isolated showers.  TONIGHT  Northeast winds 5 to 10 knots. Seas around 1 foot.  Wave Detail: Northeast 1 foot at 2 seconds. Patchy fog. Isolated  showers.  SUNDAY  Northeast winds 5 to 10 knots, increasing to near 10  knots. Seas building to 1 to 2 feet. Wave Detail: Northeast 1 foot  at 3 seconds and west to northwest 1 foot at 5 seconds. Isolated  showers.  SUNDAY NIGHT  Northeast winds increasing to 10 to 15 knots.  Seas 1 to 2 feet. Isolated showers.  MONDAY  Northeast to east winds 10 to 15 knots. Seas 2 to  3 feet.  MONDAY NIGHT  Northeast to east winds 10 to 15 knots, increasing  to near 15 knots. Seas 2 to 3 feet, building to 2 to 4 feet.  TUESDAY  Northeast to east winds 10 to 15 knots. Seas 2 to  3 feet. Isolated showers.  TUESDAY NIGHT  Northeast to east winds 10 to 15 knots,  increasing to 15 to 20 knots. Seas building to 2 to 4 feet,  occasionally to 5 feet. Isolated showers.  WEDNESDAY  East winds 10 to 15 knots. Seas 2 to 4 feet,  occasionally to 5 feet. Isolated showers.  WEDNESDAY NIGHT  East winds near 15 knots. Seas 2 to 4 feet.  Isolated showers.    $$