GMZ005-130230-
 Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
 1020 AM EDT Mon Oct 12 2026
 
 
 .SYNOPSIS...
 A couple of nearby features will define the weather across the
 Florida Keys for the first half of the week. The Atlantic Ridge is
 gradually weakening and retreating east towards the central
 Atlantic. Another region of high pressure is located over the
 Southeast and northern Gulf. Between the two high pressure
 centers lies a weak frontal boundary that is extending across
 south Florida. The front is forecast to slowly pass across the
 Keys waters by tomorrow. This will promote gentle to moderate
 northeast to east breezes. There will be slight chances for
 showers and a few thunderstorms over the next few days as the
 diffuse and weakening front stalls near the Straits of Florida.
 Late in the week, a strong cold front could develop and move
 towards the Florida Keys. Currently, there are low chances that
 the front will make it to the Florida Keys waters. We will
 continue monitoring this system.
 
 The Approximate Shoreward Edge of the Gulf Stream as of October
 9, 2026...
 
 53 NM south-southeast of Dry Tortugas Light, on Loggerhead Key
 33 NM south-southeast of Cosgrove Shoal Light, off the Marquesas Keys
 24 NM south-southeast of Sand Key Light, off Key West
 19 NM south-southeast of Looe Key, off Big Pine Key
 13 NM south-southeast of Sombrero Key Light, off Marathon
 5 NM south-southeast of Alligator Reef Light, off Islamorada
 2 NM east of Molasses Reef Light, off Key Largo
 2 NM east of Carysfort Reef Light, off Ocean Reef
 
 Gulf Stream Information Courtesy of the Naval Oceanographic
 Office.
 
 $$




 
 GMZ033-034-130230-
 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-
 1020 AM EDT Mon Oct 12 2026
 

 THIS AFTERNOON
 North to northeast winds 10 to 15 knots. Seas 2
 to 3 feet. Wave Detail: Northeast to east 2 feet at 3 seconds and
 northwest 2 feet at 5 seconds. A slight chance of showers and
 thunderstorms.

 TONIGHT
 North to northeast winds 10 to 15 knots, becoming
 northeast and increasing to near 15 knots. Seas 2 to 3 feet. Wave
 Detail: Northwest to north 3 feet at 5 seconds. A slight chance
 of showers and thunderstorms.

 TUESDAY
 Northeast winds near 15 knots, decreasing to 10 to 15
 knots. Seas 2 to 3 feet. Wave Detail: North to northeast 3 feet
 at 5 seconds. A slight chance of showers.

 TUESDAY NIGHT
 North to northeast winds 10 to 15 knots, becoming
 northeast to east and increasing to near 15 knots. Seas 2 to 3
 feet. A slight chance of showers.

 WEDNESDAY
 Northeast to east winds near 15 knots, decreasing to 10
 to 15 knots. Seas 2 to 3 feet. A slight chance of showers.

 WEDNESDAY NIGHT
 Northeast to east winds 10 to 15 knots,
 becoming east and increasing to near 15 knots. Seas 2 to 3 feet.
 A chance of showers with a slight chance of thunderstorms.

 THURSDAY
 East winds 10 to 15 knots. Seas 2 to 3 feet. A chance
 of showers with a slight chance of thunderstorms.

 THURSDAY NIGHT
 East winds 10 to 15 knots. Seas around 2 feet.
 A chance of thunderstorms with a slight chance of showers.

 FRIDAY
 East winds near 10 knots, decreasing to 5 to 10 knots.
 Seas 1 to 2 feet. A chance of showers and thunderstorms.

 FRIDAY NIGHT
 Northeast winds 5 to 10 knots. Seas around
 1 foot. Showers likely with a chance of thunderstorms.
 
 $$