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.
 
 $$




 
 GMZ031-080900-
 Florida Bay including Barnes Sound, Blackwater Sound, and
 Buttonwood Sound-
 446 PM EDT Wed Oct 7 2026
 

 TONIGHT
 Southwest to west winds 5 to 10 knots, becoming
 south late. Bay waters smooth to a light chop late. A chance of
 showers with a slight chance of thunderstorms.

 THURSDAY
 South to southwest winds 5 to 10 knots. Bay waters
 smooth to a light chop. A chance of showers with a slight chance
 of thunderstorms.

 THURSDAY NIGHT
 Southeast winds 5 to 10 knots, increasing to
 near 10 knots. Bay waters smooth to a light chop, becoming a
 light chop. A slight chance of showers and thunderstorms.

 FRIDAY
 Southeast winds near 10 knots, increasing to 10 to 15
 knots. Bay waters a light chop, becoming a light to moderate
 chop. A chance of showers with a slight chance of thunderstorms.

 FRIDAY NIGHT
 Southeast winds 10 to 15 knots. Bay waters a
 light to moderate chop. Showers likely with a chance of
 thunderstorms.

 SATURDAY
 Southeast winds 10 to 15 knots. Bay waters a light to
 moderate chop. A chance of showers and thunderstorms.

 SATURDAY NIGHT
 Southeast winds near 15 knots. Bay waters a
 moderate chop. A chance of showers and thunderstorms.

 SUNDAY
 East to southeast winds decreasing to 10 to 15 knots.
 Bay waters becoming a light to moderate chop.

 SUNDAY NIGHT
 East winds near 10 knots, decreasing to 5 to 10
 knots. Bay waters smooth to a light chop.

 MONDAY
 East winds near 5 knots. Bay waters smooth.

 MONDAY NIGHT
 Northeast to east winds near 5 knots. Bay waters
 smooth. A slight chance of showers.
 
 $$