NWS Marine Forecast


   GMZ005-060230-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  1027 AM EDT Sun Oct 5 2025      .SYNOPSIS...A combination of a stationary frontal boundary and a  weak area of low pressure situated near the Bahamas will make for  a messy weather pattern through the next several days. This will  maintain above normal rain chances through the entire forecast  period. In addition, it will keeps winds fluctuating between  northeast and southeast at times. At this time, the strongest  breezes look to stay north of our waters but will bear watching  for updates.    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.    $$
   GMZ031-060230-  Florida Bay including Barnes Sound, Blackwater Sound, and  Buttonwood Sound-  1027 AM EDT Sun Oct 5 2025    THIS AFTERNOON  Northeast to east winds near 10 knots,  decreasing to 5 to 10 knots. Bay waters a light chop, becoming  smooth to a light chop. Scattered showers and isolated  thunderstorms.  TONIGHT  Northeast to east winds 5 to 10 knots. Bay waters  smooth to a light chop. Scattered showers and isolated  thunderstorms.  MONDAY  Northeast winds 5 to 10 knots. Bay waters smooth to a  light chop. Scattered showers and isolated thunderstorms.  MONDAY NIGHT  Northeast to east winds 5 to 10 knots, becoming  east to southeast near 10 knots. Bay waters smooth to a light  chop, becoming a light chop. Scattered showers and isolated  thunderstorms.  TUESDAY  East to southeast winds near 10 knots. Bay waters a  light chop. Numerous showers and isolated thunderstorms.  TUESDAY NIGHT  Northeast to east winds 10 to 15 knots. Bay  waters a light to moderate chop. Scattered showers and isolated  thunderstorms.  WEDNESDAY  East winds decreasing to near 10 knots. Bay waters  becoming a light chop. Scattered showers and isolated  thunderstorms.  WEDNESDAY NIGHT  Northeast to east winds 10 to 15 knots. Bay  waters a light to moderate chop. Scattered showers and isolated  thunderstorms.  THURSDAY  East winds increasing to near 15 knots. Bay waters  becoming a moderate chop. Scattered showers and isolated  thunderstorms.  THURSDAY NIGHT  Northeast to east winds decreasing to 10 to 15  knots. Bay waters becoming a light to moderate chop. Scattered  showers and isolated thunderstorms.    $$