NWS Marine Forecast

   GMZ005-161415-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  1013 PM EDT Thu Oct 15 2026      .SYNOPSIS...  High pressure aligned across the southeastern United States and  adjacent Atlantic will retreat eastward into the Atlantic over the  next couple of days as a frontal system presses east and  southeastward into the eastern United States. As a result, gentle  to moderate breezes will relax, possibly becoming light and  variable Friday night. The cold front is expected to drive  southward into our Gulf waters Saturday night, resulting in  northeasterly breezes freshening considerably, along with squally  conditions. A Small Craft Advisory will likely be required for  part or all of Keys waters by late weekend. These fresh  northeasterly breezes are then expected to persist through the  duration of the marine forecast.    The Approximate Shoreward Edge of the Gulf Stream as of October  9, 2026...    53 NM south-southeast of Dry Tortugas Light, on Loggerhead Key  33 NM south-southeast of Cosgrove Shoal Light, off the Marquesas Keys  24 NM south-southeast of Sand Key Light, off Key West  19 NM south-southeast of Looe Key, off Big Pine Key  13 NM south-southeast of Sombrero Key Light, off Marathon  5 NM south-southeast of Alligator Reef Light, off Islamorada  2 NM east of Molasses Reef Light, off Key Largo  2 NM east of Carysfort Reef Light, off Ocean Reef    Gulf Stream Information Courtesy of the Naval Oceanographic  Office.    $$

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   GMZ033-034-161415-  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-  1013 PM EDT Thu Oct 15 2026    OVERNIGHT  East winds 10 to 15 knots. Seas 2 to 3 feet. Wave  Detail: East 2 feet at 4 seconds. A chance of showers with a  slight chance of thunderstorms.  FRIDAY  East to southeast winds 10 to 15 knots, decreasing to 5  to 10 knots. Seas 1 to 2 feet. Wave Detail: East to southeast 2  feet at 4 seconds. A chance of showers with a slight chance of  thunderstorms.  FRIDAY NIGHT  Northeast to east winds near 5 knots. Seas  subsiding to 1 foot or less. Wave Detail: Northeast to east 1  foot at 3 seconds. Showers likely with a slight chance of  thunderstorms.  SATURDAY  North to northeast winds 5 to 10 knots, becoming north  10 to 15 knots. Seas 1 foot or less, building to 1 to 2 feet late.  Showers likely with a chance of thunderstorms.  SATURDAY NIGHT  North to northeast winds 15 to 20 knots,  becoming northeast 20 to 25 knots after midnight. Seas 3 to 5  feet, occasionally to 6 feet, building to 5 to 7 feet,  occasionally to 9 feet. Showers with a chance of thunderstorms.  SUNDAY  Northeast winds 20 to 25 knots. Seas 5 to 8 feet,  occasionally to 10 feet. Showers with a chance of thunderstorms.  SUNDAY NIGHT  Northeast winds 25 to 30 knots. Seas 6 to 9 feet,  occasionally to 11 feet. A chance of showers with a slight chance  of thunderstorms.  MONDAY  Northeast winds 20 to 25 knots. Seas 6 to 9 feet,  occasionally to 11 feet. A chance of showers with a slight chance  of thunderstorms.  MONDAY NIGHT  Northeast winds 20 to 25 knots. Seas 5 to 8 feet,  occasionally to 10 feet. A chance of showers with a slight chance  of thunderstorms.  TUESDAY  Northeast winds 20 to 25 knots. Seas 5 to 8 feet,  occasionally to 10 feet. A chance of showers with a slight chance  of thunderstorms.  TUESDAY NIGHT  Northeast winds 20 to 25 knots. Seas 5 to  7 feet, occasionally to 9 feet. A slight chance of showers and  thunderstorms.    $$