GMZ005-010230-
 Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
 1019 AM EDT Sat Oct 31 2026
 
 
 .SYNOPSIS...
 A broad area of high pressure over the eastern United States will
 sustain moderate to fresh breezes across the Florida Keys waters
 this weekend. Small Craft Should Exercise Caution headlines may be
 required for portions or all marine zones tonight. Breezes are on
 track to slacken tomorrow, but elevated winds along the Florida
 Peninsula will generate higher northerly swell for the waters
 south of the Upper Keys. After the initial higher winds tonight,
 breezes will slacken during the weekend. Light to gentle breezes
 are possible midweek. Shower chances are expected to peak tomorrow
 through Monday with drier conditions during the middle of the
 week.
 
 The Approximate Shoreward Edge of the Gulf Stream as of October
 27, 2026...
 
 19 NM south of Dry Tortugas Light, on Loggerhead Key
 34 NM south of Cosgrove Shoal Light, off the Marquesas Keys
 28 NM south of Sand Key Light, off Key West
 38 NM south of Looe Key, off Big Pine Key
 31 NM southeast of Sombrero Key Light, off Marathon
 17 NM south-southeast of Alligator Reef Light, off Islamorada
 10 NM southeast of Molasses Reef Light, off Key Largo
 10 NM northwest 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.
 
 $$




 
 GMZ052>055-072>075-010230-
 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-
 1019 AM EDT Sat Oct 31 2026
 

 THIS AFTERNOON
 Northeast to east winds near 15 knots. Seas
 around 2 feet, building to 2 to 3 feet. Wave Detail: East 3 feet
 at 5 seconds. A chance of showers with a slight chance of
 thunderstorms.

 TONIGHT
 Northeast to east winds 15 to 20 knots. Seas building
 to 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast to
 east 4 feet at 5 seconds. A chance of showers with a slight
 chance of thunderstorms.

 SUNDAY
 East winds near 15 knots, decreasing to 10 to 15 knots.
 Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast
 to east 4 feet at 6 seconds. Showers likely with a chance of
 thunderstorms.

 SUNDAY NIGHT
 East winds 10 to 15 knots. Seas 2 to 4 feet,
 occasionally to 5 feet. Showers likely with a chance of
 thunderstorms.

 MONDAY
 East winds 10 to 15 knots, decreasing to near 10 knots.
 Seas 2 to 4 feet, occasionally to 5 feet. A chance of showers and
 thunderstorms.

 MONDAY NIGHT
 Northeast to east winds near 10 knots. Seas 2 to
 3 feet. A chance of showers with a slight chance of
 thunderstorms.

 TUESDAY
 Northeast to east winds 5 to 10 knots. Seas around 2
 feet. A slight chance of showers.

 TUESDAY NIGHT
 East winds near 10 knots. Seas around 2 feet. A
 chance of showers and thunderstorms.

 WEDNESDAY
 East winds 5 to 10 knots. Seas 1 to 2 feet. A slight
 chance of showers and thunderstorms.

 WEDNESDAY NIGHT
 Northeast to east winds 5 to 10 knots. Seas
 1 to 2 feet. A slight chance of showers and thunderstorms.
 
 $$