GMZ005-040345-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1033 AM EST Wed Dec 3 2025
.SYNOPSIS...A cold frontal system extending from Cape Hatteras to
the middle of the Gulf will meander across the Florida Keys today
and tonight. Breezes will veer northeasterly and freshen tonight
and Thursday. High pressure building over the Ohio Valley will
cause winds to veer southeasterly and slacken over the weekend.
Another frontal passage is possible towards the beginning of next
week.
The Approximate Shoreward Edge of the Gulf Stream as of November
28...
28 NM South of Dry Tortugas Light...on Loggerhead Key.
20 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
17 NM South of Sand Key Light...off Key West.
15 NM South of Looe Key...off Big Pine Key.
15 NM Southeast of Sombrero Key Light...off Marathon.
10 NM Southeast of Alligator Reef Light...off Islamorada.
9 NM Southeast of Molasses Reef Light...off Key Largo.
8 NM Southeast of Carysfort Reef Light...off Ocean Reef.
Gulf Stream Information Courtesy of the National Weather Service in
Key West based on products from NASA SPoRT.
$$
GMZ052>055-072>075-040345- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 1033 AM EST Wed Dec 3 2025 THIS AFTERNOON North to northeast winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Northeast 1 foot at 4 seconds and west to northwest 1 foot at 5 seconds. Isolated showers. TONIGHT North to northeast winds 10 to 15 knots. Seas building to 2 to 3 feet. Wave Detail: Northeast 2 feet at 3 seconds and west to northwest 2 feet at 6 seconds. THURSDAY Northeast to east winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Northeast to east 3 feet at 4 seconds and west to northwest 2 feet at 6 seconds. THURSDAY NIGHT East winds near 15 knots. Seas 2 to 4 feet. FRIDAY East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. FRIDAY NIGHT East to southeast winds near 10 knots. Seas 2 to 3 feet. SATURDAY Southeast winds near 10 knots. Seas around 2 feet. Isolated showers. SATURDAY NIGHT Southeast to south winds near 10 knots, increasing to 10 to 15 knots. Seas 1 to 2 feet. Scattered showers. SUNDAY South to southwest winds 10 to 15 knots. Seas 1 to 2 feet. Scattered showers. SUNDAY NIGHT Southwest to west winds near 10 knots. Seas 1 to 2 feet. Scattered showers. $$
GMZ052>055-072>075-040345- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 1033 AM EST Wed Dec 3 2025 THIS AFTERNOON North to northeast winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Northeast 1 foot at 4 seconds and west to northwest 1 foot at 5 seconds. Isolated showers. TONIGHT North to northeast winds 10 to 15 knots. Seas building to 2 to 3 feet. Wave Detail: Northeast 2 feet at 3 seconds and west to northwest 2 feet at 6 seconds. THURSDAY Northeast to east winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Northeast to east 3 feet at 4 seconds and west to northwest 2 feet at 6 seconds. THURSDAY NIGHT East winds near 15 knots. Seas 2 to 4 feet. FRIDAY East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. FRIDAY NIGHT East to southeast winds near 10 knots. Seas 2 to 3 feet. SATURDAY Southeast winds near 10 knots. Seas around 2 feet. Isolated showers. SATURDAY NIGHT Southeast to south winds near 10 knots, increasing to 10 to 15 knots. Seas 1 to 2 feet. Scattered showers. SUNDAY South to southwest winds 10 to 15 knots. Seas 1 to 2 feet. Scattered showers. SUNDAY NIGHT Southwest to west winds near 10 knots. Seas 1 to 2 feet. Scattered showers. $$