NWS Marine Forecast

   GMZ005-210245-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  1031 AM EDT Sun Sep 20 2026      .SYNOPSIS...  Light to gentle mainly southerly breezes will be in place through  the remainder of the weekend, though a period of variable breezes  are expected late this afternoon and evening. In addition, a wet  weather pattern will persist across the Florida Keys coastal  waters into the new week as an upper- level low lingers in the  eastern Gulf waters. As a result, scattered to numerous showers  and thunderstorms will be a daily occurence with gusty winds,  lightning strikes, blinding downpours, and locally hazardous seas  the main hazards. Breezes will generally remain light to gentle  into the new week but brief periods of moderate breezes may occur  in the evening hours.    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.    $$

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   GMZ033-034-210245-  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-  1031 AM EDT Sun Sep 20 2026    THIS AFTERNOON  South winds near 5 knots until late afternoon,  becoming light and variable. Seas 1 foot or less. Wave Detail:  South 1 foot at 2 seconds. Showers likely with a chance of  thunderstorms.  TONIGHT  East to southeast winds near 5 knots, becoming south.  Seas 1 foot or less. Wave Detail: South 1 foot at 3 seconds.  Showers likely with a chance of thunderstorms.  MONDAY  South to southwest winds near 5 knots. Seas 1 foot or  less. Wave Detail: South 1 foot at 3 seconds. A chance of showers  and thunderstorms.  MONDAY NIGHT  Southeast to south winds 5 to 10 knots. Seas  around 1 foot. Showers likely with a chance of thunderstorms.  TUESDAY  South winds 5 to 10 knots. Seas around 1 foot. Showers  likely with a chance of thunderstorms.  TUESDAY NIGHT  Southeast to south winds 5 to 10 knots. Seas  around 1 foot. Showers likely with a chance of thunderstorms.  WEDNESDAY  Southeast to south winds 5 to 10 knots. Seas around  1 foot. Showers likely with a chance of thunderstorms.  WEDNESDAY NIGHT  Southeast winds 5 to 10 knots. Seas around  1 foot. A chance of thunderstorms. A chance of showers.  THURSDAY  East to southeast winds near 5 knots. Seas 1 foot or  less. A chance of thunderstorms. Showers likely.  THURSDAY NIGHT  East winds near 5 knots. Seas 1 foot or less. A  chance of showers and thunderstorms.    $$