NWS Marine Forecast



 Hazardous marine condition(s):
 Short Term Forecast
   GMZ005-100830-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  427 PM EDT Wed Sep 9 2026      .SYNOPSIS...  Ridging has established across Florida resulting in gentle to  occasionally moderate east to southeasterly breezes. Expect  breezes to peak in the evening and overnight while lulling during  the day during the next several days. A series of lower level  moisture swathes will support periods of elevated rain and thunder  chances.    The Approximate Shoreward Edge of the Gulf Stream as of September  2, 2026...    34 NM south-southwest of Dry Tortugas Light, on Loggerhead Key  34 NM south-southeast of Cosgrove Shoal Light, off the Marquesas Keys  26 NM south-southeast of Sand Key Light, off Key West  21 NM south-southeast of Looe Key, off Big Pine Key  17 NM southeast of Sombrero Key Light, off Marathon  10 NM southeast of Alligator Reef Light, off Islamorada  6 NM east-southeast of Molasses Reef Light, off Key Largo  1 NM east-southeast of Carysfort Reef Light, off Ocean Reef    This data courtesy of the Naval Oceanographic Office.    $$
   GMZ033-034-100830-  Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM  out and beyond 5 fathoms-  Gulf of America including Dry Tortugas and Rebecca Shoal Channel-  427 PM EDT Wed Sep 9 2026    TONIGHT  East winds near 10 knots. Seas 1 to 2 feet. Wave  Detail: Northeast to east 1 foot at 3 seconds. A chance of showers  and thunderstorms.  THURSDAY  East to southeast winds near 10 knots, decreasing to  5 to 10 knots. Seas around 1 foot. Wave Detail: East 1 foot at 3  seconds. Showers likely with a chance of thunderstorms.  THURSDAY NIGHT  East to southeast winds near 10 knots. Seas  1 to 2 feet. Wave Detail: East 1 foot at 3 seconds. A chance of  showers with a slight chance of thunderstorms.  FRIDAY  East to southeast winds 5 to 10 knots. Seas 1 to  2 feet. A chance of showers with a slight chance of  thunderstorms.  FRIDAY NIGHT  East to southeast winds near 10 knots. Seas  1 to 2 feet. A chance of showers and thunderstorms.  SATURDAY  East to southeast winds near 10 knots. Seas around  1 foot. A chance of showers and thunderstorms.  SATURDAY NIGHT  East to southeast winds near 10 knots. Seas  around 1 foot. A chance of showers and thunderstorms.  SUNDAY  Southeast winds 5 to 10 knots. Seas around 1 foot. A  chance of thunderstorms. A chance of showers.  SUNDAY NIGHT  East to southeast winds 5 to 10 knots. Seas  around 1 foot. A chance of showers and thunderstorms.  MONDAY  East winds 5 to 10 knots. Seas 1 to 2 feet. A chance of  showers and thunderstorms.  MONDAY NIGHT  Northeast to east winds 5 to 10 knots. Seas 1 to  2 feet. A chance of showers and thunderstorms.    $$