GMZ005-120930-
 Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
 417 PM EST Thu Dec 11 2025
 
 
 .SYNOPSIS...As high pressure drifts eastward over the next
 several days and eventually into the western North Atlantic,
 north to northeast winds will clock around to the northeast to
 east. 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 Saturday 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>075-120930-
 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-
 417 PM EST Thu Dec 11 2025
 

 TONIGHT
 North to northeast winds near 10 knots, becoming
 northeast to east. Seas 2 to 3 feet. Wave Detail: North 2 feet at
 6 seconds and northeast 1 foot at 3 seconds.

 FRIDAY
 Northeast to east winds near 10 knots. Seas 2 to 3
 feet. Wave Detail: Northeast to east 2 feet at 5 seconds and
 northwest 2 feet at 6 seconds.

 FRIDAY NIGHT
 East winds 10 to 15 knots. Seas 2 to 3 feet,
 building to around 3 feet. Wave Detail: East 3 feet at 4 seconds
 and northwest 2 feet at 6 seconds. Isolated showers.

 SATURDAY
 East winds 10 to 15 knots. Seas around 3 feet.
 Scattered showers.

 SATURDAY NIGHT
 East winds 10 to 15 knots, decreasing to 5 to
 10 knots. Seas around 3 feet, subsiding to 2 to 3 feet. Numerous
 showers and isolated thunderstorms.

 SUNDAY
 North to northeast winds 5 to 10 knots, becoming north
 and increasing to 10 to 15 knots. Seas 2 to 3 feet. Scattered
 showers.

 SUNDAY NIGHT
 North to northeast winds near 15 knots, increasing
 to near 20 knots. Seas 2 to 3 feet, building to 3 to 5 feet,
 occasionally to 6 feet. Isolated showers.

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

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