GMZ005-050830-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
424 PM EDT Sun Oct 4 2026
.SYNOPSIS...
Atlantic high pressure centered east of Bermuda will remain in
place. This feature will maintain gentle to moderate east to
southeasterly breezes this evening that will gradually slacken
tonight through the first part of the week. In addition,
relatively drier weather conditions have settled in, though
isolated to scattered showers and occasional thunderstorms could
still occur at times. A cold front is on track to stall across the
Florida Peninsula and northern Gulf on Tuesday with the highest
rain chances remaining north of the Florida Keys. This will
promote a shift to south to southwesterly light to gentle breezes
by midweek.
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.
$$
GMZ033-034-050830- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 424 PM EDT Sun Oct 4 2026 TONIGHT East to southeast winds near 10 knots. Seas 1 to 2 feet. Wave Detail: East to southeast 2 feet at 4 seconds. A slight chance of showers and thunderstorms. MONDAY East to southeast winds 5 to 10 knots, becoming variable near 5 knots. Seas 1 to 2 feet, subsiding to around 1 foot. Wave Detail: Southeast 2 feet at 3 seconds. A slight chance of showers and thunderstorms. MONDAY NIGHT Variable near 5 knots, becoming east to southeast. Seas around 1 foot. Wave Detail: East 1 foot at 3 seconds. A slight chance of showers and thunderstorms. TUESDAY Southeast to south winds near 5 knots, becoming variable. Seas 1 foot or less. A chance of showers with a slight chance of thunderstorms. TUESDAY NIGHT Variable winds near 5 knots, becoming south to southwest winds. Seas around 1 foot. A chance of showers with a slight chance of thunderstorms. WEDNESDAY South to southwest winds near 5 knots, increasing to 5 to 10 knots. Seas around 1 foot. A chance of showers with a slight chance of thunderstorms. WEDNESDAY NIGHT Southwest to west winds near 5 knots, becoming south. Seas around 1 foot. Showers likely with a chance of thunderstorms. THURSDAY South winds near 5 knots, becoming southeast. Seas around 1 foot. Showers likely with a chance of thunderstorms. THURSDAY NIGHT Southeast winds near 5 knots, increasing to 5 to 10 knots. Seas around 1 foot, building to 1 to 2 feet. A chance of showers and thunderstorms. FRIDAY Southeast winds near 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. FRIDAY NIGHT East to southeast winds near 10 knots, increasing to 10 to 15 knots. Seas 1 to 2 feet, building to 2 to 3 feet. A chance of showers and thunderstorms. $$
GMZ033-034-050830- 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- 424 PM EDT Sun Oct 4 2026 TONIGHT East to southeast winds near 10 knots. Seas 1 to 2 feet. Wave Detail: East to southeast 2 feet at 4 seconds. A slight chance of showers and thunderstorms. MONDAY East to southeast winds 5 to 10 knots, becoming variable near 5 knots. Seas 1 to 2 feet, subsiding to around 1 foot. Wave Detail: Southeast 2 feet at 3 seconds. A slight chance of showers and thunderstorms. MONDAY NIGHT Variable near 5 knots, becoming east to southeast. Seas around 1 foot. Wave Detail: East 1 foot at 3 seconds. A slight chance of showers and thunderstorms. TUESDAY Southeast to south winds near 5 knots, becoming variable. Seas 1 foot or less. A chance of showers with a slight chance of thunderstorms. TUESDAY NIGHT Variable winds near 5 knots, becoming south to southwest winds. Seas around 1 foot. A chance of showers with a slight chance of thunderstorms. WEDNESDAY South to southwest winds near 5 knots, increasing to 5 to 10 knots. Seas around 1 foot. A chance of showers with a slight chance of thunderstorms. WEDNESDAY NIGHT Southwest to west winds near 5 knots, becoming south. Seas around 1 foot. Showers likely with a chance of thunderstorms. THURSDAY South winds near 5 knots, becoming southeast. Seas around 1 foot. Showers likely with a chance of thunderstorms. THURSDAY NIGHT Southeast winds near 5 knots, increasing to 5 to 10 knots. Seas around 1 foot, building to 1 to 2 feet. A chance of showers and thunderstorms. FRIDAY Southeast winds near 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. FRIDAY NIGHT East to southeast winds near 10 knots, increasing to 10 to 15 knots. Seas 1 to 2 feet, building to 2 to 3 feet. A chance of showers and thunderstorms. $$