NWS Marine Forecast

   GMZ005-230230-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  1017 AM EDT Tue Sep 22 2026      .SYNOPSIS...  Unsettled weather will persist through the next several days as  deep tropical moisture spreads into the region, which will support  scattered to numerous showers and thunderstorms at times. Breezes  outside of convection will generally remain light to gentle out of  the south the next several days with brief periods of moderate  breezes occurring at times, mainly in the evening and overnight  hours. Winds briefly become light and variable on Thursday before  shifting more northerly in the wake of a frontal boundary that is  forecast to push southward across the coastal waters of the  Florida Keys late in the week. In addition, seas will also start  to build by the end of the week and into the weekend as northeasterly  swell increases following the frontal passage, especially in the  Straits of Florida.    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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   GMZ033-034-230230-  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-  1017 AM EDT Tue Sep 22 2026    THIS AFTERNOON  South winds 10 to 15 knots. Seas around 1 foot.  Wave Detail: Southeast to south 1 foot at 3 seconds. Showers  likely with a chance of thunderstorms.  TONIGHT  Southeast to south winds near 10 knots. Seas around  1 foot. Showers likely with a chance of thunderstorms.  WEDNESDAY  South winds 5 to 10 knots, becoming southeast to  south. Seas around 1 foot. Showers likely with a chance of  thunderstorms.  WEDNESDAY NIGHT  East winds near 5 knots. Seas 1 foot or less.  A chance of showers and thunderstorms.  THURSDAY  Northeast winds near 5 knots. Seas 1 foot or less. A  chance of showers and thunderstorms.  THURSDAY NIGHT  North winds 5 to 10 knots, becoming northeast  and increasing to 10 to 15 knots. Seas 1 to 3 feet due to  increasing northeasterly swell. A chance of showers and  thunderstorms.  FRIDAY  Northeast winds 10 to 15 knots, becoming 5 to 10 knots.  Seas 2 to 3 feet. A chance of showers and thunderstorms.  FRIDAY NIGHT  Northeast winds 5 to 10 knots. Seas 2 to 3 feet.  A chance of showers and thunderstorms.  SATURDAY  Northeast winds 5 to 10 knots. Seas 2 to 3 feet. A  chance of showers with a slight chance of thunderstorms.  SATURDAY NIGHT  Northeast winds 5 to 10 knots. Seas 1 to  2 feet due to decreasing northeasterly swell. A chance of showers  and thunderstorms.    $$