NWS Marine Forecast

   GMZ005-220230-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  1029 AM EDT Tue Jul 21 2026      .SYNOPSIS...As of 5 AM EDT, Tropical Storm Bertha was centered  over the northeastern Gulf waters. Bertha is expected to continue  moving slowly to the northwest or west-northwest today, followed  by a turn to the west by the middle part of the week. On the  forecast track, TS Bertha will move near or along the northern  Gulf coast during the next several days. Closer to home, an  Atlantic ridge of high pressure will extend to the Florida  Peninsula for the next several days. Moderate breezes will slacken  to mainly gentle this afternoon. Thereafter, breezes will  continue to peak overnight and lull during the day through Friday.    The Approximate Shoreward Edge of the Gulf Stream as of July 17,  2026...    49 NM South of Dry Tortugas Light...on Loggerhead Key.  51 NM South of Cosgrove Shoal Light...off the Marquesas Keys.  38 NM South of Sand Key Light...off Key West.  22 NM South of Looe Key...off Big Pine Key.  13 NM South of Sombrero Key Light...off Marathon.  6 NM Southeast of Alligator Reef Light...off Islamorada.  2 NM Southeast of Molasses Reef Light...off Key Largo.  1 NM Southeast of Carysfort Reef Light...off Ocean Reef.    Gulf Stream Information Courtesy of the National Weather Service in  Key West, using data from RTOFS and NASA SPoRT SST.    $$

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   GMZ033-034-220230-  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-  1029 AM EDT Tue Jul 21 2026    THIS AFTERNOON  Southeast to south winds near 15 knots,  becoming southeast and decreasing to near 10 knots. Seas 2 to 3  feet. Wave Detail: Southeast to south 3 feet at 4 seconds and west  2 feet at 6 seconds.  TONIGHT  Southeast winds 5 to 10 knots, increasing to near  15 knots after midnight. Seas 2 to 3 feet. Wave Detail: West to  northwest 3 feet at 7 seconds and southeast 2 feet at 4 seconds.  WEDNESDAY  Southeast winds 10 to 15 knots, decreasing to near 10  knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 4  seconds and west 2 feet at 6 seconds. A slight chance of showers  and thunderstorms.  WEDNESDAY NIGHT  East to southeast winds near 10 knots,  increasing to 10 to 15 knots. Seas 2 to 3 feet. A slight chance  of showers and thunderstorms.  THURSDAY  East winds near 10 knots, decreasing to 5 to 10  knots. Seas 2 to 3 feet. A slight chance of showers and  thunderstorms.  THURSDAY NIGHT  Northeast to east winds 5 to 10 knots. Seas  around 2 feet. A chance of showers and thunderstorms.  FRIDAY  East winds 5 to 10 knots. Seas 1 to 2 feet. A chance of  showers and thunderstorms.  FRIDAY NIGHT  East to southeast winds 5 to 10 knots. Seas 1 to  2 feet. A slight chance of showers and thunderstorms.  SATURDAY  Southeast to south winds near 5 knots. Seas around  1 foot.  SATURDAY NIGHT  North to northeast winds near 5 knots, becoming  south after midnight. Seas around 1 foot.    $$