NWS Marine Forecast



 Hazardous marine condition(s):
 Short Term Forecast
   GMZ005-050830-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  423 PM EDT Sat Oct 4 2025      .SYNOPSIS...A weak area of low pressure located near the central  and northwestern Bahamas will act to weaken the pressure gradient  briefly across the Florida Keys. This will result in slackening  breezes veering from the northeast to the southeast through  Sunday. This system is expected to drift west- northwestward  across the northwestern Bahamas and toward southern Florida during  the next couple of days. As it lifts north and northwest of the  Keys, high pressure across the Atlantic will build back in  resulting in freshening northeast to east breezes.    The Approximate Shoreward Edge of the Gulf Stream as of October  01...    42 NM South of Dry Tortugas Light...on Loggerhead Key.  33 NM South of Cosgrove Shoal Light...off the Marquesas Keys.  33 NM South of Sand Key Light...off Key West.  35 NM South of Looe Key...off Big Pine Key.  16 NM Southeast of Sombrero Key Light...off Marathon.  10 NM Southeast of Alligator Reef Light...off Islamorada.  6 NM Southeast of Molasses Reef Light...off Key Largo.  5 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.    $$
   GMZ033-034-050830-  Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM  out and beyond 5 fathoms-  Gulf of America including Dry Tortugas and Rebecca Shoal Channel-  423 PM EDT Sat Oct 4 2025    TONIGHT  East to southeast winds 10 to 15 knots. Seas 2 to 3  feet. Wave Detail: East 2 feet at 4 seconds. Scattered showers and  isolated thunderstorms.  SUNDAY  East to southeast winds near 10 knots, decreasing to 5  to 10 knots. Seas subsiding to 1 to 2 feet. Wave Detail: East 2  feet at 4 seconds. Scattered showers and isolated thunderstorms.  SUNDAY NIGHT  East winds 5 to 10 knots. Seas around 1 foot.  Wave Detail: East 1 foot at 3 seconds. Scattered showers and  isolated thunderstorms.  MONDAY  Northeast to east winds 5 to 10 knots, increasing to  near 10 knots. Seas around 1 foot. Scattered showers and isolated  thunderstorms.  MONDAY NIGHT  Northeast to east winds 10 to 15 knots. Seas  around 1 foot, building to around 2 feet. Scattered showers and  isolated thunderstorms.  TUESDAY  Northeast to east winds increasing to near 15 knots.  Seas 2 to 3 feet. Scattered showers and isolated thunderstorms.  TUESDAY NIGHT  Northeast to east winds 15 to 20 knots. Seas  2 to 4 feet, occasionally to 5 feet. Scattered showers and  isolated thunderstorms.  WEDNESDAY AND WEDNESDAY NIGHT  Northeast to east winds 15 to 20  knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered  showers and isolated thunderstorms.  THURSDAY  Northeast to east winds 15 to 20 knots. Seas 2 to  4 feet, occasionally to 5 feet. Scattered showers and isolated  thunderstorms.  THURSDAY NIGHT  East winds 15 to 20 knots. Seas 2 to  4 feet, occasionally to 5 feet. Scattered showers and isolated  thunderstorms.    $$