GMZ005-120345-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1031 AM EST Wed Nov 11 2026
.SYNOPSIS...
High pressure across the western North Atlantic northeast of the
Bahamas will slide east through the day as a surface Low moves
into the Great Lakes region and strengthens. This will allow for
east to southeast breezes slacken through the day and further
slacken this evening, while becoming more southerly. As the low
moves out of the Great Lake and into the New England States, an
attendent cold front is poses to pass through the Florida Keys,
late Thursday into early Friday. This will result in breezes
quickly becoming west to northwest and gradually freshening. A
period of fresh to strong breezes is possible Friday night into
Saturday morning before briefly slackening. A reinforcing front
late Sunday will bring back the potential for a prolonged period
of fresh to strong breezes.
The Approximate Shoreward Edge of the Gulf Stream as of November 8,
2026...
30 NM south of Dry Tortugas Light, on Loggerhead Key
38 NM south of Cosgrove Shoal Light, off the Marquesas Keys
46 NM south of Sand Key Light, off Key West
20 NM south of Looe Key, off Big Pine Key
15 NM southeast of Sombrero Key Light, off Marathon
10 NM south of Alligator Reef Light, off Islamorada
8 NM southeast of Molasses Reef Light, off Key Largo
5 NM east 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.
$$
GMZ033-034-120345- 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- 1031 AM EST Wed Nov 11 2026 THIS AFTERNOON Southeast winds near 10 knots, decreasing to 5 to 10 knots. Seas around 1 foot, subsiding to 1 foot or less. Wave Detail: East to southeast 1 foot at 3 seconds. A chance of showers with a slight chance of thunderstorms. TONIGHT Southeast winds near 5 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms. THURSDAY South to southwest west winds near 5 knots, becoming west to northwest near 10 knots in the afternoon. Seas 1 foot or less, building to around 1 foot. Wave Detail: West to northwest 1 foot at 2 seconds. A chance of showers with a slight chance of thunderstorms. THURSDAY NIGHT Northwest winds near 10 knots, increasing to 10 to 15 knots. Seas around 1 foot, building to 1 to 2 feet. A slight chance of showers and thunderstorms. FRIDAY Northwest to north winds 10 to 15 knots, increasing to near 15 knots. Seas 1 to 2 feet, building to 2 to 3 feet. A slight chance of showers. FRIDAY NIGHT North winds 15 to 20 knots, increasing to near 20 knots. Seas 3 to 4 feet, occasionally to 5 feet, building to 4 to 5 feet, occasionally to 6 feet. A slight chance of showers. SATURDAY North to northeast winds near 20 knots, decreasing to 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet, subsiding to 3 to 4 feet, occasionally to 5 feet. A slight chance of showers. SATURDAY NIGHT Northeast winds near 15 knots, increasing to 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. SUNDAY Northeast to east winds 15 to 20 knots, briefly decreasing to near 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. A slight chance of showers. SUNDAY NIGHT Northeast to east winds 15 to 20 knots, increasing to near 20 knots. Seas 3 to 5 feet, occasionally to 6 feet, building to 4 to 6 feet, occasionally to 8 feet. A slight chance of showers and thunderstorms. $$
GMZ033-034-120345- 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- 1031 AM EST Wed Nov 11 2026 THIS AFTERNOON Southeast winds near 10 knots, decreasing to 5 to 10 knots. Seas around 1 foot, subsiding to 1 foot or less. Wave Detail: East to southeast 1 foot at 3 seconds. A chance of showers with a slight chance of thunderstorms. TONIGHT Southeast winds near 5 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms. THURSDAY South to southwest west winds near 5 knots, becoming west to northwest near 10 knots in the afternoon. Seas 1 foot or less, building to around 1 foot. Wave Detail: West to northwest 1 foot at 2 seconds. A chance of showers with a slight chance of thunderstorms. THURSDAY NIGHT Northwest winds near 10 knots, increasing to 10 to 15 knots. Seas around 1 foot, building to 1 to 2 feet. A slight chance of showers and thunderstorms. FRIDAY Northwest to north winds 10 to 15 knots, increasing to near 15 knots. Seas 1 to 2 feet, building to 2 to 3 feet. A slight chance of showers. FRIDAY NIGHT North winds 15 to 20 knots, increasing to near 20 knots. Seas 3 to 4 feet, occasionally to 5 feet, building to 4 to 5 feet, occasionally to 6 feet. A slight chance of showers. SATURDAY North to northeast winds near 20 knots, decreasing to 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet, subsiding to 3 to 4 feet, occasionally to 5 feet. A slight chance of showers. SATURDAY NIGHT Northeast winds near 15 knots, increasing to 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. SUNDAY Northeast to east winds 15 to 20 knots, briefly decreasing to near 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. A slight chance of showers. SUNDAY NIGHT Northeast to east winds 15 to 20 knots, increasing to near 20 knots. Seas 3 to 5 feet, occasionally to 6 feet, building to 4 to 6 feet, occasionally to 8 feet. A slight chance of showers and thunderstorms. $$