Hazardous marine condition(s):
Short Term Forecast
GMZ005-102130-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
429 AM EST Wed Dec 10 2025
.SYNOPSIS...As a frontal boundary slides eastward and away from
the Florida Keys marine zones during the early morning, breezes
will slacken. A second weak front will push through the coastal
waters late Wednesday and Wednesday night, with modestly freshened
northwesterly breezes clocking around to the northeast to east
for late week and into the weekend.
The Approximate Shoreward Edge of the Gulf Stream as of December 8...
15 NM South of Dry Tortugas Light...on Loggerhead Key.
13 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
14 NM South of Sand Key Light...off Key West.
18 NM South of Looe Key...off Big Pine Key.
23 NM Southeast of Sombrero Key Light...off Marathon.
18 NM Southeast of Alligator Reef Light...off Islamorada.
12 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 and RTOFS.
$$
GMZ052>055-072>075-102130- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 429 AM EST Wed Dec 10 2025 TODAY North to northeast winds near 10 knots, becoming northwest to north. Seas 2 to 3 feet. Wave Detail: Northeast to east 2 feet at 6 seconds and northwest 2 feet at 7 seconds. Isolated showers. TONIGHT Northwest to north winds 5 to 10 knots, increasing to near 10 knots. Seas around 2 feet. Wave Detail: North to northeast 2 feet at 6 seconds. Isolated showers. THURSDAY North winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: North to northeast 2 feet at 5 seconds. THURSDAY NIGHT Northeast winds near 10 knots. Seas 2 to 3 feet. FRIDAY Northeast to east winds 10 to 15 knots. Seas 2 to 3 feet. FRIDAY NIGHT East winds 10 to 15 knots. Seas 2 to 3 feet. Isolated showers. SATURDAY Northeast to east winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers. SATURDAY NIGHT Northeast to east winds near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers. SUNDAY Northeast winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers. SUNDAY NIGHT Northeast winds 10 to 15 knots, increasing to 15 to 20 knots. Seas building to 3 to 5 feet, occasionally to 6 feet after midnight. Scattered showers. $$
GMZ052>055-072>075-102130- 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- 429 AM EST Wed Dec 10 2025 TODAY North to northeast winds near 10 knots, becoming northwest to north. Seas 2 to 3 feet. Wave Detail: Northeast to east 2 feet at 6 seconds and northwest 2 feet at 7 seconds. Isolated showers. TONIGHT Northwest to north winds 5 to 10 knots, increasing to near 10 knots. Seas around 2 feet. Wave Detail: North to northeast 2 feet at 6 seconds. Isolated showers. THURSDAY North winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: North to northeast 2 feet at 5 seconds. THURSDAY NIGHT Northeast winds near 10 knots. Seas 2 to 3 feet. FRIDAY Northeast to east winds 10 to 15 knots. Seas 2 to 3 feet. FRIDAY NIGHT East winds 10 to 15 knots. Seas 2 to 3 feet. Isolated showers. SATURDAY Northeast to east winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers. SATURDAY NIGHT Northeast to east winds near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers. SUNDAY Northeast winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers. SUNDAY NIGHT Northeast winds 10 to 15 knots, increasing to 15 to 20 knots. Seas building to 3 to 5 feet, occasionally to 6 feet after midnight. Scattered showers. $$