GMZ005-080900-
 Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
 446 PM EDT Wed Oct 7 2026
 
 
 .SYNOPSIS...Tropical Storm Isaias, currently over the southwestern
 Gulf waters, is expected to move towards the North Gulf Coast
 over the next few days, strengthening as it does so. A cold front
 currently draped across north-central Florida will slowly press
 southward infringing on the surface ridge to its south. In doing
 so, these systems will act in tandem and create a tightening
 pressure gradient across the Keys, resulting in freshening mainly
 southeast breezes as we head into the weekend. In addition,
 moisture will also be on the rise leading to higher rain and
 thunder chances. Any showers and storms will be capable of causing
 hazardous marine conditions through the weekend.
 
 The Approximate Shoreward Edge of the Gulf Stream as of October 2, 2026...
 
 39 NM south-southeast of Dry Tortugas Light, on Loggerhead Key
 14 NM south-southeast of Cosgrove Shoal Light, off the Marquesas Keys
 8 NM south-southeast of Sand Key Light, off Key West
 2 NM south-southeast of Looe Key, off Big Pine Key
 1 NM south-southeast of Sombrero Key Light, off Marathon
 0 NM south-southeast of Alligator Reef Light, off Islamorada
 2 NM northwest of Molasses Reef Light, off Key Largo
 2 NM northwest of Carysfort Reef Light, off Ocean Reef
 
 Gulf Stream Information Courtesy of the Naval Oceanographic Office.
 
 $$




 
 GMZ033-034-080900-
 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-
 446 PM EDT Wed Oct 7 2026
 

 TONIGHT
 Southwest to west winds near 10 knots, becoming south
 5 to 10 knots after midnight. Seas around 1 foot. Wave Detail:
 Southwest 1 foot at 3 seconds. Showers likely with a slight chance
 of thunderstorms.

 THURSDAY
 South winds near 10 knots, becoming southeast 5 to 10
 knots. Seas around 1 foot. Wave Detail: South 1 foot at 3
 seconds. A chance of showers with a slight chance of
 thunderstorms.

 THURSDAY NIGHT
 Southeast winds near 10 knots, increasing to 10
 to 15 knots. Seas 1 to 2 feet. Wave Detail: Southeast 2 feet at 3
 seconds and west to northwest 1 foot at 7 seconds. A chance of
 showers with a slight chance of thunderstorms.

 FRIDAY
 Southeast winds increasing to near 15 knots. Seas 2 to
 4 feet, occasionally to 5 feet. A chance of showers with a slight
 chance of thunderstorms.

 FRIDAY NIGHT
 Southeast winds near 15 knots. Seas 4 to 6 feet,
 occasionally to 8 feet. Showers likely with a chance of
 thunderstorms.

 SATURDAY
 Southeast to south winds near 15 knots. Seas 4 to 6
 feet, occasionally to 8 feet. Showers likely with a chance of
 thunderstorms.

 SATURDAY NIGHT
 Southeast winds decreasing to 10 to 15 knots.
 Seas 3 to 5 feet, occasionally to 6 feet. Showers likely with a
 chance of thunderstorms.

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

 SUNDAY NIGHT
 East winds near 10 knots. Seas around 2 feet. A
 slight chance of showers.

 MONDAY
 Northeast to east winds 5 to 10 knots. Seas 1 to
 2 feet. A slight chance of showers.

 MONDAY NIGHT
 Northeast winds near 5 knots. Seas 1 to 2 feet. A
 slight chance of showers.
 
 $$