NWS Marine Forecast

   GMZ005-122130-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  406 AM EST Thu Nov 12 2026      .SYNOPSIS...  Troughing associated with a large and robust low pressure system  will gradually build south across the Florida Keys today. This  will result in a strengthening pressure gradient, allowing winds  to slowly back to the west and northwest and freshen. Small Craft  Exercise Caution headlines and hazards may be required as early  as Friday afternoon and evening. Hazardous winds from this first  front are not expected to last very long, but higher seas may take  more time to subside. Even though winds will briefly slacken  during the weekend, a reinforcing front Sunday night and Monday  morning will bring hazardous marine conditions again, and we may  see an extended period of strong winds and higher seas.    The Approximate Shoreward Edge of the Gulf Stream as of November 8,  2026...    30 NM south of Dry Tortugas Light, on Loggerhead Key  38 NM south of Cosgrove Shoal Light, off the Marquesas Keys  46 NM south of Sand Key Light, off Key West  20 NM south of Looe Key, off Big Pine Key  15 NM southeast of Sombrero Key Light, off Marathon  10 NM south of Alligator Reef Light, off Islamorada  8 NM southeast of Molasses Reef Light, off Key Largo  5 NM east of Carysfort Reef Light, off Ocean Reef    Gulf Stream Information Courtesy of the National Weather Service in  Key West, using data from RTOFS and NASA SPoRT SST.    $$

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   GMZ033-034-122130-  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-  406 AM EST Thu Nov 12 2026    TODAY  Southwest to west winds near 5 knots, becoming west to  northwest near 10 knots in the afternoon. Seas 1 foot or less,  building to around 1 foot. Wave Detail: Northwest 1 foot at 2  seconds. A chance of showers and a slight chance of thunderstorms.  TONIGHT  Northwest to north winds near 10 knots, increasing to  10 to 15 knots. Seas around 1 foot, building to 1 to 2 feet. Wave  Detail: Northwest 1 foot at 3 seconds. A slight chance of showers  and thunderstorms.  FRIDAY  Northwest to north winds 10 to 15 knots, increasing to  near 15 knots in the afternoon. Seas 1 to 2 feet, building to 3 to  4 feet, occasionally to 5 feet. Wave Detail: Northwest to north 3  feet at 5 seconds. A slight chance of showers.  FRIDAY NIGHT  North winds 15 to 20 knots. Seas 3 to 4 feet,  occasionally to 5 feet.  SATURDAY  North to northeast winds 15 to 20 knots, decreasing to  near 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. A slight  chance of showers.  SATURDAY NIGHT  Northeast winds 15 to 20 knots. Seas 3 to  5 feet, occasionally to 6 feet.  SUNDAY  Northeast to east winds 15 to 20 knots early, decreasing  to near 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. A  slight chance of showers.  SUNDAY NIGHT  Northeast to east winds 15 to 20 knots, increasing  to near 20 knots. Seas 3 to 4 feet, occasionally to 5 feet,  building to 4 to 6 feet, occasionally to 8 feet. A slight chance  of showers and thunderstorms.  MONDAY  Northeast to east winds 20 to 25 knots. Seas 4 to  7 feet, occasionally to 9 feet. A slight chance of showers and  thunderstorms.  MONDAY NIGHT  Northeast to east winds 20 to 25 knots. Seas 4 to  7 feet, occasionally to 9 feet, building to 5 to 8 feet,  occasionally to 10 feet. A chance of showers with a slight chance  of thunderstorms.    $$