NWS Marine Forecast


   GMZ005-270330-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  1021 AM EST Thu Feb 26 2026      .SYNOPSIS...  A broad Atlantic ridge will shift eastward over the next few  days. Through this period, resulting gentle to moderate east to  southeasterly breezes will slacken. However, impacts from nearby  land breezes and cooler waters north of the island chain will make  conditions more chaotic. Over the weekend, a high pressure system  is primed to build over the southeastern States. Breezes will  slacken to light to gentle amidst an increase in shower coverage.  A reinforcing high is forecast to sweep into the eastern US in the  latter half of the weekend, and may prompt rapidly freshening  breezes early next 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.    $$
   GMZ033-034-270330-  Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM  out and beyond 5 fathoms-  Gulf of America including Dry Tortugas and Rebecca Shoal Channel-  1021 AM EST Thu Feb 26 2026    THIS AFTERNOON  Southeast winds near 10 knots, becoming east to  southeast 5 to 10 knots. Seas 1 to 2 feet. Wave Detail:  Southeast 2 feet at 4 seconds and west to northwest 1 foot at 5  seconds.  TONIGHT  East to southeast winds increasing to near 10 knots.  Seas 1 to 2 feet. Wave Detail: East to southeast 2 feet at 4  seconds. Isolated showers.  FRIDAY  East to southeast winds 5 to 10 knots. Seas 1 to  2 feet. Wave Detail: East to southeast 1 foot at 3 seconds and  west to northwest 1 foot at 7 seconds.  FRIDAY NIGHT  East to southeast winds 5 to 10 knots. Seas  subsiding to around 1 foot. Scattered showers.  SATURDAY  East winds 5 to 10 knots. Seas around 1 foot.  Isolated showers.  SATURDAY NIGHT  Northeast winds 5 to 10 knots. Seas around  1 foot. Isolated showers.  SUNDAY  Northeast winds near 10 knots. Seas 1 to 2 feet.  SUNDAY NIGHT  Northeast winds near 10 knots, becoming northeast  to east 10 to 15 knots. Seas 1 to 2 feet.  MONDAY  Northeast to east winds 10 to 15 knots. Seas 1 to  3 feet.  MONDAY NIGHT  Northeast to east winds 10 to 15 knots, increasing  to near 15 knots. Seas building to 2 to 3 feet. Isolated showers.    $$