NWS Marine Forecast



 Hazardous marine condition(s):
 Short Term Forecast
   GMZ005-261430-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  1027 PM EDT Fri Sep 25 2026      .SYNOPSIS...  An early season cold front will remain draped across the distant  Straits of Florida for much of the weekend, supporting light to  gentle northerlies. A Nor'easter off the Eastern Seaboard will  support a northeasterly swell with large periods in the eastern  marine zones through Sunday. The front will push back northward on  Monday through the marine zones. Winds will then clock back  around to the southeast to south for early next week, also  accompanied by increasing rain and thunder chances.    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.    $$
   GMZ033-034-261430-  Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM  out and beyond 5 fathoms-  Gulf of America including Dry Tortugas and Rebecca Shoal Channel-  1027 PM EDT Fri Sep 25 2026    OVERNIGHT  North to northeast winds 10 to 15 knots. Seas around  2 feet. Wave Detail: Northwest to north 2 feet at 5 seconds. A  slight chance of showers.  SATURDAY  Northeast winds near 10 knots, decreasing to 5 to 10  knots. Seas 1 to 2 feet. Wave Detail: North 2 feet at 4 seconds. A  slight chance of showers.  SATURDAY NIGHT  North to northeast winds 5 to 10 knots. Seas  1 to 2 feet. Wave Detail: Northwest to north 1 foot at 5 seconds.  A slight chance of showers.  SUNDAY  North to northeast winds near 5 knots. Seas around  1 foot. A slight chance of showers.  SUNDAY NIGHT  Variable winds near 5 knots. Seas 1 foot or less.  A slight chance of showers.  MONDAY  Southeast to south winds near 5 knots. Seas 1 foot or  less. A slight chance of showers and thunderstorms.  MONDAY NIGHT  Southeast to south winds near 5 knots. Seas 1  foot or less. Showers likely with a chance of thunderstorms.  TUESDAY AND TUESDAY NIGHT  Southeast to south winds 5 to 10  knots. Seas around 1 foot. Showers likely with a chance of  thunderstorms.  WEDNESDAY  East to southeast winds 5 to 10 knots, increasing to  near 10 knots. Seas 1 to 2 feet, building to around 2 feet.  Showers likely with a chance of thunderstorms.  WEDNESDAY NIGHT  East to southeast winds 10 to 15 knots. Seas 2  to 3 feet, building to 3 to 4 feet, occasionally to 5 feet.  Showers likely with a chance of thunderstorms.    $$