NWS Marine Forecast



 Hazardous marine condition(s):
 Short Term Forecast
   GMZ005-030830-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  427 PM EDT Wed Sep 2 2026      .SYNOPSIS...  The western periphery of a weak North Atlantic high will remain  in loose control of the Keys coastal waters for the next several  days. Light to gentle east to southeast breezes overnight through  morning will become light and variable at times during the  afternoon and evenings. In addition, the overall flow will keep  low-level moisture in place across the region, with seasonally  normal rain and thunder chances.    The Approximate Shoreward Edge of the Gulf Stream as of August 26,  2026...    32 NM south of Dry Tortugas Light, on Loggerhead Key  9 NM south-southeast of Cosgrove Shoal Light, off the Marquesas Keys  7 NM south-southeast of Sand Key Light, off Key West  6 NM south-southeast of Looe Key, off Big Pine Key  7 NM south-southeast of Sombrero Key Light, off Marathon  4 NM southeast of Alligator Reef Light, off Islamorada  1 NM west-northwest of Molasses Reef Light, off Key Largo  1 NM east-southeast of Carysfort Reef Light, off Ocean Reef    Gulf Stream Information Courtesy of the Naval Oceanographic  Office.    $$
   GMZ033-034-030830-  Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM  out and beyond 5 fathoms-  Gulf of America including Dry Tortugas and Rebecca Shoal Channel-  427 PM EDT Wed Sep 2 2026    TONIGHT  Variable winds near 5 knots, becoming southeast to  south. Seas 1 foot or less. A chance of showers and  thunderstorms.  THURSDAY  South to southwest winds near 5 knots. Seas 1 foot or  less. A chance of showers and thunderstorms.  THURSDAY NIGHT  Southeast to south winds near 5 knots. Seas 1  foot or less. A chance of showers and thunderstorms.  FRIDAY  East to southeast winds near 5 knots. Seas 1 foot or  less. A chance of showers and thunderstorms.  FRIDAY NIGHT  East winds 5 to 10 knots. Seas 1 foot or less.  Showers and thunderstorms likely.  SATURDAY  East to southeast winds near 5 knots. Seas 1 foot or  less. Showers and thunderstorms likely.  SATURDAY NIGHT THROUGH MONDAY NIGHT  Southeast winds near 5  knots. Seas 1 foot or less. A chance of showers and thunderstorms.    $$