NWS Marine Forecast

   GMZ005-240830-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  425 PM EDT Fri Oct 23 2026      .SYNOPSIS...  High pressure centered just north of the Great Lakes region will  continue to slide eastward and strengthen over the next several  days. As this occurs, the high will interact with a developing  disturbance in the eastern Caribbean, supporting freshening  northeasterly breezes over the next several days. Breezes will  peak Sunday night through Tuesday, when strong to near gale  breezes will be possible. The freshening breezes and a surge of  moisture may also support elevated rain and isolated strong  thunderstorm chances Friday night through Monday.    The Approximate Shoreward Edge of the Gulf Stream as of October  19, 2026...    46 NM south of Dry Tortugas Light, on Loggerhead Key  18 NM north of Cosgrove Shoal Light, off the Marquesas Keys  12 NM north of Sand Key Light, off Key West  7 NM north-northwest of Looe Key, off Big Pine Key  5 NM southeast of Sombrero Key Light, off Marathon  2 NM south-southeast of Alligator Reef Light, off Islamorada  2 NM northwest of Molasses Reef Light, off Key Largo  3 NM northwest of Carysfort Reef Light, off Ocean Reef    Gulf Stream Information Courtesy of the Naval Oceanographic  Office.    $$

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   GMZ052>055-072>075-240830-  Straits of Florida from Ocean Reef to Craig Key out 20 NM-  Straits of Florida from Craig Key to west end of Seven Mile  Bridge out 20 NM-  Straits of Florida from west end of Seven Mile Bridge to south of  Halfmoon Shoal out 20 NM-  Straits of Florida from Halfmoon Shoal to 20 NM west of Dry  Tortugas out 20 NM-  Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out-  Straits of Florida from Craig Key to west end of Seven Mile  Bridge 20 to 60 NM out-  Straits of Florida from west end of Seven Mile Bridge to south of  Halfmoon Shoal 20 to 60 NM out-  Straits of Florida from Halfmoon Shoal to 20 NM west of Dry  Tortugas 20 to 60 NM out-  425 PM EDT Fri Oct 23 2026    SMALL CRAFT ADVISORY IN EFFECT    TONIGHT  Northeast winds 15 to 20 knots, increasing to near 20  knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail:  Northeast 6 feet at 6 seconds. Showers likely with a slight chance  of thunderstorms.  SATURDAY  Northeast winds near 20 knots. Seas 4 to 6 feet,  occasionally to 8 feet. Wave Detail: Northeast 6 feet at  7 seconds. A chance of showers with a slight chance of  thunderstorms.  SATURDAY NIGHT  North to northeast winds 15 to 20 knots. Seas  4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast  6 feet at 6 seconds. A slight chance of showers and  thunderstorms.  SUNDAY  North to northeast winds 15 to 20 knots. Seas 4 to  6 feet, occasionally to 8 feet. A chance of showers with a slight  chance of thunderstorms.  SUNDAY NIGHT  Northeast winds 20 to 25 knots. Seas 5 to 8 feet,  occasionally to 10 feet. Showers with a slight chance of  thunderstorms.  MONDAY  North to northeast winds 20 to 25 knots. Seas 5 to  8 feet, occasionally to 10 feet. Showers likely with a slight  chance of thunderstorms.  MONDAY NIGHT  Northeast winds near 25 knots. Seas 7 to 10 feet,  occasionally to 13 feet. A chance of showers with a slight chance  of thunderstorms.  TUESDAY  Northeast winds 20 to 25 knots. Seas 7 to 10 feet,  occasionally to 13 feet. A chance of showers with a slight chance  of thunderstorms.  TUESDAY NIGHT  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.  WEDNESDAY  Northeast to east winds 20 to 25 knots, becoming  15 to 20 knots. Seas 5 to 8 feet, occasionally to 10 feet. A  chance of showers with a slight chance of thunderstorms.  WEDNESDAY NIGHT  Northeast to east winds 15 to 20 knots. Seas  4 to 6 feet, occasionally to 8 feet. A chance of showers with a  slight chance of thunderstorms.    $$