NWS Marine Forecast


   GMZ005-042130-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  430 AM EST Wed Nov 4 2026      .SYNOPSIS...  The flanks of a robust high pressure system offshore the Mid  Atlantic States will be will eroded by a low over the  northeastern United States and a deepening low well northeast of  the Bahamas. As a result, northeast to east breezes will be light  to gentle through the remainder of the week along with diminishing  rain chances. A surface high will develop across the Gulf  beginning Friday, which may lead to brief nocturnal wind surges  along the west coast of Florida and into the outer Gulf waters.      The Approximate Shoreward Edge of the Gulf Stream as of November  03, 2026...    57 NM south of Dry Tortugas Light, on Loggerhead Key  34 NM south of Cosgrove Shoal Light, off the Marquesas Keys  25 NM south of Sand Key Light, off Key West  17 NM south of Looe Key, off Big Pine Key  17 NM southeast of Sombrero Key Light, off Marathon  28 NM south-southeast of Alligator Reef Light, off Islamorada  26 NM southeast of Molasses Reef Light, off Key Largo  12 NM east-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.    $$
   GMZ033-034-042130-  Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM  out and beyond 5 fathoms-  Gulf of America including Dry Tortugas and Rebecca Shoal Channel-  430 AM EST Wed Nov 4 2026    TODAY  East winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail:  Northeast to east 1 foot at 3 seconds. A chance of showers and a  slight chance of thunderstorms.  TONIGHT  Northeast to east winds near 10 knots. Seas 1 to 2  feet. Wave Detail: Northeast to east 1 foot at 3 seconds. A slight  chance of showers and thunderstorms.  THURSDAY  Northeast to east winds 5 to 10 knots. Seas around  1 foot. Wave Detail: Northeast to east 1 foot at 3 seconds. A  slight chance of showers and thunderstorms.  THURSDAY NIGHT  Northeast to east winds 5 to 10 knots. Seas  around 1 foot. A slight chance of showers and thunderstorms.  FRIDAY  Northeast winds 5 to 10 knots. Seas around 1 foot.  FRIDAY NIGHT  Northwest to north winds near 10 knots, becoming  north to northeast. Seas 1 to 2 feet.  SATURDAY  North to northeast winds 5 to 10 knots. Seas around 1  foot.  SATURDAY NIGHT  North winds near 10 knots. Seas 1 to 2 feet.  SUNDAY  North to northeast winds 5 to 10 knots. Seas 1 to  2 feet.  SUNDAY NIGHT  North to northeast winds near 10 knots. Seas  around 2 feet. A slight chance of showers.    $$