GMZ005-050345-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1031 AM EST Thu Dec 4 2025
.SYNOPSIS...Gentle to moderate northeasterly breezes will begin to
veer southeasterly tonight. A messy high pressure system over the
eastern CONUS will allow breezes to slacken to light to gentle
over the weekend. Shower coverage will start to increase by the
start of next week as breezes become southerly, and a cold frontal
passage is possible early next week.
The Approximate Shoreward Edge of the Gulf Stream as of December 4...
21 NM South of Dry Tortugas Light...on Loggerhead Key.
21 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
22 NM South of Sand Key Light...off Key West.
15 NM South of Looe Key...off Big Pine Key.
8 NM Southeast of Sombrero Key Light...off Marathon.
6 NM Southeast of Alligator Reef Light...off Islamorada.
3 NM Southeast of Molasses Reef Light...off Key Largo.
1 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.
$$
GMZ052>055-072>075-050345- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 1031 AM EST Thu Dec 4 2025 THIS AFTERNOON Northeast to east winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Northeast to east 3 feet at 4 seconds and west to northwest 2 feet at 6 seconds. Isolated showers. TONIGHT Northeast to east winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: Northeast to east 3 feet at 5 seconds and west to northwest 1 foot at 6 seconds. FRIDAY East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 5 seconds and northwest 1 foot at 5 seconds. FRIDAY NIGHT East to southeast winds near 10 knots. Seas subsiding to around 2 feet. SATURDAY Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Isolated showers. SATURDAY NIGHT Southeast to south winds 5 to 10 knots. Seas 1 to 2 feet. Isolated showers. SUNDAY South to southwest winds near 10 knots. Seas 1 to 2 feet. Isolated showers. SUNDAY NIGHT Southwest to west winds 5 to 10 knots. Seas 1 to 2 feet. Scattered showers. MONDAY West to northwest winds near 10 knots, increasing to 10 to 15 knots. Seas 1 to 2 feet, building to around 2 feet. Scattered showers. MONDAY NIGHT Northwest to north winds 10 to 15 knots, becoming north to northeast winds near 15 knots. Seas building to 2 to 4 feet, occasionally to 5 feet. Isolated showers. $$
GMZ052>055-072>075-050345- 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- 1031 AM EST Thu Dec 4 2025 THIS AFTERNOON 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. Isolated showers. TONIGHT Northeast to east winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: Northeast to east 3 feet at 5 seconds and west to northwest 1 foot at 6 seconds. FRIDAY East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 5 seconds and northwest 1 foot at 5 seconds. FRIDAY NIGHT East to southeast winds near 10 knots. Seas subsiding to around 2 feet. SATURDAY Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Isolated showers. SATURDAY NIGHT Southeast to south winds 5 to 10 knots. Seas 1 to 2 feet. Isolated showers. SUNDAY South to southwest winds near 10 knots. Seas 1 to 2 feet. Isolated showers. SUNDAY NIGHT Southwest to west winds 5 to 10 knots. Seas 1 to 2 feet. Scattered showers. MONDAY West to northwest winds near 10 knots, increasing to 10 to 15 knots. Seas 1 to 2 feet, building to around 2 feet. Scattered showers. MONDAY NIGHT Northwest to north winds 10 to 15 knots, becoming north to northeast winds near 15 knots. Seas building to 2 to 4 feet, occasionally to 5 feet. Isolated showers. $$