Hazardous marine condition(s):
Short Term Forecast
GMZ005-020945-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
431 PM EST Mon Dec 1 2025
.SYNOPSIS...Another large area of high pressure currently located
over the Lower Great Lakes region will continue moving eastward
through the afternoon. This will continue to promote gentle to
moderate northeast to east breezes shifting to southeasterly by
Tuesday morning as the high shifts farther east. A developing
storm system on the heels of this high will result in a weakening
of the pressure gradient across the Keys through early Wednesday.
Breezes will also clock around the compass going from southeast to
south Tuesday to northwest to north by early Wednesday. Its
corresponding cold front is expected to press through the Keys mid
to late week resulting in freshening north to northeast breezes.
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.
$$
GMZ052>055-072>075-020945- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 431 PM EST Mon Dec 1 2025 TONIGHT East to southeast winds near 15 knots, becoming southeast. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 5 seconds. Isolated showers. TUESDAY Southeast to south winds 10 to 15 knots, becoming southwest to west near 10 knots in the afternoon. Seas 3 to 4 feet, subsiding to around 2 feet. Wave Detail: Southeast 3 feet at 5 seconds. Isolated showers. TUESDAY NIGHT West to northwest winds decreasing to 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: East 2 feet at 5 seconds. Isolated showers. WEDNESDAY North winds 5 to 10 knots. Seas 1 to 2 feet. Isolated showers. WEDNESDAY NIGHT North to northeast winds 5 to 10 knots, increasing to 10 to 15 knots. Seas 2 to 3 feet. THURSDAY Northeast to east winds 10 to 15 knots, decreasing to near 10 knots. Seas 2 to 3 feet. THURSDAY NIGHT Northeast to east winds 10 to 15 knots. Seas 2 to 3 feet. FRIDAY East winds 10 to 15 knots. Seas 2 to 3 feet. FRIDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. SATURDAY Southeast winds near 10 knots. Seas subsiding to 1 to 2 feet. SATURDAY NIGHT East to southeast winds 5 to 10 knots, becoming southeast near 10 knots. Seas 1 to 2 feet. Isolated showers. $$
GMZ052>055-072>075-020945- 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- 431 PM EST Mon Dec 1 2025 TONIGHT East to southeast winds near 15 knots, becoming southeast. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 5 seconds. Isolated showers. TUESDAY Southeast to south winds 10 to 15 knots, becoming southwest to west near 10 knots in the afternoon. Seas 3 to 4 feet, subsiding to around 2 feet. Wave Detail: Southeast 3 feet at 5 seconds. Isolated showers. TUESDAY NIGHT West to northwest winds decreasing to 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: East 2 feet at 5 seconds. Isolated showers. WEDNESDAY North winds 5 to 10 knots. Seas 1 to 2 feet. Isolated showers. WEDNESDAY NIGHT North to northeast winds 5 to 10 knots, increasing to 10 to 15 knots. Seas 2 to 3 feet. THURSDAY Northeast to east winds 10 to 15 knots, decreasing to near 10 knots. Seas 2 to 3 feet. THURSDAY NIGHT Northeast to east winds 10 to 15 knots. Seas 2 to 3 feet. FRIDAY East winds 10 to 15 knots. Seas 2 to 3 feet. FRIDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. SATURDAY Southeast winds near 10 knots. Seas subsiding to 1 to 2 feet. SATURDAY NIGHT East to southeast winds 5 to 10 knots, becoming southeast near 10 knots. Seas 1 to 2 feet. Isolated showers. $$