NWS Marine Forecast

   GMZ005-251430-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  1018 PM EDT Thu Sep 24 2026      .SYNOPSIS...  Isolated to scattered showers and thunderstorms will wax and wane  over the Florida Keys waters tonight and tomorrow before a drier  air mass pushes into the region. Breezes outside of convection  will generally remain light to gentle northerlies. A frontal  boundary is expected to push southward across the Keys waters  tomorrow, resulting in freshening breezes, becoming gentle to  moderate in the wake of the front. Winds should gradually slacken  a touch over the weekend but will remain out of the north. In  addition, seas across the eastern Florida Straits will build at  the end of the week and into the weekend due to an incoming 4 to 5  feet northerly swell following the frontal passage.    The Approximate Shoreward Edge of the Gulf Stream as of September  15, 2026...    64 NM south-southeast of Dry Tortugas Light, on Loggerhead Key  40 NM south-southeast of Cosgrove Shoal Light, off the Marquesas Keys  36 NM south-southeast of Sand Key Light, off Key West  35 NM southeast of Looe Key, off Big Pine Key  28 NM southeast of Sombrero Key Light, off Marathon  15 NM east-southeast of Alligator Reef Light, off Islamorada  8 NM east-southeast of Molasses Reef Light, off Key Largo  5 NM east-southeast of Carysfort Reef Light, off Ocean Reef    Gulf Stream Information Courtesy of the Naval Oceanographic Office.    $$

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   GMZ033-034-251430-  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-  1018 PM EDT Thu Sep 24 2026    OVERNIGHT  North to northeast winds near 10 knots, becoming  north to northeast near 15 knots late. Seas around 1 foot,  building to 2 to 3. Wave Detail: North 3 feet at 5 seconds. A  chance of showers with a slight chance of thunderstorms.  FRIDAY  North to northeast winds 10 to 15 knots, decreasing to  near 10 knots. Seas 2 to 3 feet. Wave Detail: North 3 feet at 6  seconds. A chance of showers with a slight chance of  thunderstorms.  FRIDAY NIGHT  Northeast winds 10 to 15 knots. Seas 2 to 3 feet.  Wave Detail: North to northeast 3 feet at 6 seconds. A slight  chance of showers and thunderstorms.  SATURDAY  North to northeast winds near 10 knots, decreasing to  5 to 10 knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet.  SATURDAY NIGHT  Northeast winds 5 to 10 knots. Seas 1 to 2  feet.  SUNDAY  Northeast winds 5 to 10 knots. Seas around 1 foot. A  slight chance of showers and thunderstorms.  SUNDAY NIGHT  Northeast to east winds 5 to 10 knots. Seas  around 1 foot. A slight chance of showers and thunderstorms.  MONDAY  East winds near 5 knots. Seas around 1 foot. A chance  of showers with a slight chance of thunderstorms.  MONDAY NIGHT  Southeast winds near 5 knots. Seas 1 foot or  less. A chance of showers and thunderstorms.  TUESDAY  Southeast winds near 5 knots. Seas 1 foot or less.  Showers likely with a chance of thunderstorms.  TUESDAY NIGHT  Southeast winds 5 to 10 knots. Seas 1 foot or  less. Showers likely with a chance of thunderstorms.    $$