NWS Marine Forecast


   GMZ005-040930-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  416 PM EST Tue Mar 3 2026      .SYNOPSIS...  A large and robust high centered off of the New England Coast will  lumber east southeastward further into the North Atlantic  through the remainder of the week. This will usher in a prolonged  period of moderate to fresh breezes across Florida Keys coastal  waters. Winds will be strongest across the Florida Straits and  weakest over the cooler Gulf side waters.    The Approximate Shoreward Edge of the Gulf Stream as of March 1...    47 NM South of Dry Tortugas Light...on Loggerhead Key.  16 NM South of Cosgrove Shoal Light...off the Marquesas Keys.  9 NM South of Sand Key Light...off Key West.  7 NM South of Looe Key...off Big Pine Key.  8 NM Southeast of Sombrero Key Light...off Marathon.  8 NM Southeast of Alligator Reef Light...off Islamorada.  7 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 and RTOFS.    $$
   GMZ032-035-040930-  Bayside and Gulfside from Craig Key to west end of Seven Mile  Bridge-  Gulf of America from west end of Seven Mile Bridge to Halfmoon  Shoal out to 5 Fathoms-  416 PM EST Tue Mar 3 2026    SMALL CRAFT SHOULD EXERCISE CAUTION FOR INCREASING WINDS    TONIGHT  Northeast to east winds 10 to 15 knots, increasing to  15 to 20 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the  Marquesas Keys. Nearshore waters a light to moderate chop,  becoming choppy. Isolated showers.  WEDNESDAY THROUGH FRIDAY  East winds near 15 knots. Seas 1 to 2  feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore  waters a moderate chop. Isolated showers.  FRIDAY NIGHT THROUGH SATURDAY NIGHT  East winds near 15 knots.  Seas 1 to 2 feet, except 2 to 4 feet, occasionally to 5 feet west  of the Marquesas Keys. Nearshore waters a moderate chop. Isolated  showers.  SUNDAY AND SUNDAY NIGHT  East winds 10 to 15 knots. Seas 1 to 2  feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore  waters a light to moderate chop. Isolated showers.    $$