GMZ005-132145-
 Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
 431 AM EST Sat Dec 13 2025
 
 
 .SYNOPSIS...Moderate to occasionally fresh northeast to easterly
 breezes will slightly slacken over the day into tonight. The next
 frontal boundary is progged to push through the Florida Keys
 marine zones on Sunday night. Ahead of the front, elevated chances
 for showers and thunderstorms will be possible late tonight
 through early Sunday. In the wake of the frontal passage, fresh to
 strong northeasterly breezes are expected Sunday night through at
 least Tuesday.
 
 The Approximate Shoreward Edge of the Gulf Stream as of December 8...
 
 15 NM South of Dry Tortugas Light...on Loggerhead Key.
 13 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
 14 NM South of Sand Key Light...off Key West.
 18 NM South of Looe Key...off Big Pine Key.
 23 NM Southeast of Sombrero Key Light...off Marathon.
 18 NM Southeast of Alligator Reef Light...off Islamorada.
 12 NM Southeast of Molasses Reef Light...off Key Largo.
 8 NM Southeast of Carysfort Reef Light...off Ocean Reef.
 
 Gulf Stream Information Courtesy of the National Weather Service in
 Key West based on products from NASA SPoRT and RTOFS.
 
 $$




 
 GMZ052>055-072>075-132145-
 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-
 431 AM EST Sat Dec 13 2025
 
 .SMALL CRAFT SHOULD EXERCISE CAUTION UNTIL WINDS DECREASE...
 

 TODAY
 Northeast to east winds 15 to 20 knots, decreasing to
 near 15 knots. Seas 2 to 4 feet, occasionally 5 feet. Wave Detail:
 East 3 feet at 5 seconds and northwest 1 foot at 5 seconds.
 Numerous showers and isolated thunderstorms in the afternoon.

 TONIGHT
 East winds near 15 knots, decreasing to 10 to 15
 knots. Seas 2 to 4 feet, occasionally 5 feet. Wave Detail: East 3
 feet at 5 seconds. Widespread showers and scattered thunderstorms.

 SUNDAY
 North to northeast winds near 10 knots, increasing to 10
 to 15 knots. Seas 2 to 3 feet. Wave Detail: Northeast to east 2
 feet at 5 seconds. Scattered showers and isolated thunderstorms.

 SUNDAY NIGHT
 North winds 15 to 20 knots, becoming north to
 northeast and increasing to near 20 knots. Seas 2 to 4 feet,
 occasionally to 5 feet, building to 3 to 5 feet, occasionally 6
 feet. Scattered showers.

 MONDAY
 Northeast winds near 20 knots. Seas 5 to 7 feet,
 occasionally to 9 feet. Isolated showers.

 MONDAY NIGHT
 Northeast to east winds near 20 knots. Seas 5 to
 7 feet, occasionally to 9 feet. Scattered showers.

 TUESDAY
 Northeast to east winds near 20 knots. Seas 5 to 7
 feet, occasionally to 9 feet. Isolated showers.

 TUESDAY NIGHT
 Northeast to east winds 15 to 20 knots. Seas
 4 to 6 feet, occasionally to 8 feet. Isolated showers.

 WEDNESDAY
 East winds 15 to 20 knots, decreasing to near 15
 knots. Seas 4 to 5 feet, occasionally to 6 feet. Isolated showers.

 WEDNESDAY NIGHT
 East winds near 15 knots. Seas 3 to 4 feet,
 occasionally to 5 feet. Isolated showers.
 
 $$