GMZ005-182130-
 Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
 426 AM EST Sun Jan 18 2026
 
 
 .SYNOPSIS...Weak high pressure remains in place across the Keys
 early this morning. This is promoting mainly light and variable
 breezes. A cold front is currently draped across Georgia/Florida
 Panhandle extending southwestward through the Gulf and into the
 Bay of Campeche. This front is progged to push through the Florida
 Keys coastal waters later today. Breezes will sharply increase
 behind the passage of the cold front late today becoming fresh to
 strong, potentially near gale across the SE Gulf and westernmost
 Straits. In the wake of the front, an expansive high pressure
 system will then move across the eastern United States. This will
 continue to promote fresh to strong breezes through the week.
 
 The Approximate Shoreward Edge of the Gulf Stream as of January
 18...
 
 18 NM South of Dry Tortugas Light...on Loggerhead Key.
 16 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
 15 NM South of Sand Key Light...off Key West.
 13 NM South of Looe Key...off Big Pine Key.
 13 NM Southeast of Sombrero Key Light...off Marathon.
 12 NM Southeast of Alligator Reef Light...off Islamorada.
 7 NM Southeast of Molasses Reef Light...off Key Largo.
 4 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.
 
 $$




 
 GMZ033-034-055-075-182130-
 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-
 Straits of Florida from Halfmoon Shoal to 20 NM west of Dry
 Tortugas out 20 NM-
 Straits of Florida from Halfmoon Shoal to 20 NM west of Dry
 Tortugas 20 to 60 NM out-
 426 AM EST Sun Jan 18 2026
 
 SMALL CRAFT ADVISORY IN EFFECT
 

 TODAY
 Variable winds near 5 knots, becoming north 25 to 30
 knots. Seas 1 to 2 feet, building to 4 to 6 feet, occasionally to
 7 feet. Wave Detail: Northeast to east 1 foot at 3 seconds and
 west to northwest 1 foot at 6 seconds, becoming northwest to north
 4 feet at 5 seconds. Scattered showers.

 TONIGHT
 North winds near 25 knots, decreasing to 20 to 25
 knots. Seas 6 to 9 feet, occasionally to 11 feet. Wave Detail:
 Northwest to north 8 feet at 8 seconds and northwest to north 5
 feet at 5 seconds. Isolated showers.

 MONDAY
 North winds 20 to 25 knots, becoming north to
 northeast 15 to 20 knots in the afternoon. Seas 5 to 7 feet,
 occasionally to 9 feet. Wave Detail: North 6 feet at 7 seconds.

 MONDAY NIGHT
 North to northeast winds 15 to 20 knots,
 increasing to 20 to 25 knots after midnight. Seas 4 to 6 feet,
 occasionally to 8 feet.

 TUESDAY
 North to northeast winds 20 to 25 knots. Seas 5 to
 7 feet, occasionally to 9 feet. Isolated showers.

 TUESDAY NIGHT
 Northeast winds 20 to 25 knots. Seas 5 to
 7 feet, occasionally to 9 feet, building to 6 to 9 feet,
 occasionally to 11 feet.

 WEDNESDAY
 Northeast winds 20 to 25 knots, becoming northeast
 to east 15 to 20 knots. Seas 5 to 8 feet, occasionally to 10
 feet, subsiding to 4 to 6 feet, occasionally to 8 feet. Isolated
 showers.

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

 THURSDAY
 Northeast winds near 15 knots. Seas 3 to 5 feet,
 occasionally to 6 feet. Scattered showers.

 THURSDAY NIGHT
 North to northeast winds 15 to 20 knots. Seas
 3 to 5 feet, occasionally to 6 feet. Scattered showers.
 
 $$