NWS Marine Forecast



 Hazardous marine condition(s):
 Short Term Forecast
   GMZ005-151430-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  1024 PM EDT Mon Jul 14 2025      .SYNOPSIS...Weak low pressure tries to develop in the vicinity of  Florida heading through the first half of the week. Initially,  the Keys will be on the southern fringe in a col region resulting  in mainly variable breezes through tonight. As the weak low  pressure area shifts to the west and high pressure builds in  behind, breezes will freshen becoming southeast to south at first,  before becoming east to southeast for mid to late week. Also,  expect increasing coverage of showers and thunderstorms through  the middle part of the week.    The Approximate Shoreward Edge of the Gulf Stream as of July 8...    14 NM South of Dry Tortugas Light...on Loggerhead Key.  5 NM South of Cosgrove Shoal Light...off the Marquesas Keys.  4 NM South of Sand Key Light...off Key West.  4 NM South of Looe Key...off Big Pine Key.  5 NM Southeast of Sombrero Key Light...off Marathon.  6 NM Southeast of Alligator Reef Light...off Islamorada.  3 NM Southeast of Molasses Reef Light...off Key Largo.  4 NM Southeast of Carysfort Reef Light...off Ocean Reef.    Gulf Stream Information Courtesy of the National Weather Service in  Key West based on products from NASA SPoRT.    $$
   GMZ052>055-072>075-151430-  Straits of Florida from Ocean Reef to Craig Key out 20 NM-  Straits of Florida from Craig Key to west end of Seven Mile  Bridge out 20 NM-  Straits of Florida from west end of Seven Mile Bridge to south of  Halfmoon Shoal out 20 NM-  Straits of Florida from Halfmoon Shoal to 20 NM west of Dry  Tortugas out 20 NM-  Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out-  Straits of Florida from Craig Key to west end of Seven Mile  Bridge 20 to 60 NM out-  Straits of Florida from west end of Seven Mile Bridge to south of  Halfmoon Shoal 20 to 60 NM out-  Straits of Florida from Halfmoon Shoal to 20 NM west of Dry  Tortugas 20 to 60 NM out-  1024 PM EDT Mon Jul 14 2025    OVERNIGHT  Variable winds 5 to 10 knots, becoming southeast.  Seas around 1 foot. Wave Detail: Northeast to east 1 foot at 2  seconds. Scattered showers and isolated thunderstorms.  TUESDAY  Southeast to south winds 5 to 10 knots, becoming east  to southeast in the afternoon. Seas 1 to 2 feet. Wave Detail:  Southeast 1 foot at 3 seconds. Winds and seas higher in and  around numerous showers and scattered thunderstorms.  TUESDAY NIGHT  East to southeast winds 5 to 10 knots, becoming  southeast and increasing to 10 to 15 knots after midnight. Seas 1  to 2 feet, building to 2 to 3 feet. Wave Detail: Southeast 1 foot  at 3 seconds, becoming southeast 2 feet at 3 seconds. Numerous  showers and scattered thunderstorms.  WEDNESDAY  Southeast winds 10 to 15 knots, becoming east to  southeast and decreasing to 5 to 10 knots in the afternoon. Seas  2 to 3 feet, subsiding to around 2 feet. Scattered showers and  thunderstorms.  WEDNESDAY NIGHT  East to southeast winds 10 to 15 knots,  increasing to 15 to 20 knots. Seas 2 to 3 feet, building to 2 to  4 feet, occasionally to 5 feet. Scattered showers and isolated  thunderstorms.  THURSDAY  East to southeast winds 15 to 20 knots, decreasing to  near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet.  Scattered showers and isolated thunderstorms.  THURSDAY NIGHT  East winds 15 to 20 knots. Seas 3 to 4 feet,  occasionally to 5 feet. Scattered showers and isolated  thunderstorms.  FRIDAY  East winds near 15 knots, decreasing to 10 to 15 knots.  Seas 3 to 4 feet, occasionally to 5 feet, subsiding to 2 to 4  feet, occasionally to 5 feet. Scattered showers and isolated  thunderstorms.  FRIDAY NIGHT  East winds 10 to 15 knots. Seas 2 to 3 feet.  Scattered showers and isolated thunderstorms.  SATURDAY AND SATURDAY NIGHT  East winds near 10 knots. Seas 2  to 3 feet. Scattered showers and isolated thunderstorms.    $$