Hazardous marine condition(s):
Small Craft Advisory
GMZ005-010330-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1024 AM EST Sun Nov 30 2025
.SYNOPSIS...High pressure will be sliding into the New England
region this afternoon and it effects of the Florida Keys weather
will continue to diminish. This high will progress further east
through Monday and breezes will continue to slacken as well as
shift to the east. Another high will take the place of this
previous high for Monday night and early Tuesday keeping breezes
gentle to moderate. A developing storm system on the heels of this
high Tuesday will result in a weakening of the pressure gradient
across the Keys through early Wednesday. Its corresponding cold
front may try and push 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.
$$
GMZ052>055-072>075-010330- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 1024 AM EST Sun Nov 30 2025 SMALL CRAFT ADVISORY IN EFFECT THIS AFTERNOON Northeast to east winds 15 to 20 knots. Seas 6 to 8 feet, occasionally to 9 feet, subsiding to 4 to 6 feet, occasionally to 8 feet. Wave Detail: East 7 feet at 7 seconds, becoming northeast to east 6 feet at 7 seconds. Scattered showers. TONIGHT Northeast to east winds near 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast to east 5 feet at 7 seconds. Scattered showers. MONDAY East winds near 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast to east 4 feet at 6 seconds. Scattered showers. MONDAY NIGHT East to southeast winds near 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Isolated showers. TUESDAY Southeast to south winds 10 to 15 knots, becoming south to southwest and decreasing to 5 to 10 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet. TUESDAY NIGHT West to northwest winds near 5 knots. Seas 1 to 2 feet. Isolated showers. WEDNESDAY North to northeast winds 5 to 10 knots. Seas around 2 feet. WEDNESDAY NIGHT Northeast winds near 10 knots. Seas 2 to 3 feet. THURSDAY Northeast winds 10 to 15 knots. Seas 2 to 3 feet. THURSDAY NIGHT Northeast to east winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. $$
GMZ052>055-072>075-010330- 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- 1024 AM EST Sun Nov 30 2025 SMALL CRAFT ADVISORY IN EFFECT THIS AFTERNOON Northeast to east winds 15 to 20 knots. Seas 6 to 8 feet, occasionally to 9 feet, subsiding to 4 to 6 feet, occasionally to 8 feet. Wave Detail: East 7 feet at 7 seconds, becoming northeast to east 6 feet at 7 seconds. Scattered showers. TONIGHT Northeast to east winds near 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast to east 5 feet at 7 seconds. Scattered showers. MONDAY East winds near 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast to east 4 feet at 6 seconds. Scattered showers. MONDAY NIGHT East to southeast winds near 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Isolated showers. TUESDAY Southeast to south winds 10 to 15 knots, becoming south to southwest and decreasing to 5 to 10 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet. TUESDAY NIGHT West to northwest winds near 5 knots. Seas 1 to 2 feet. Isolated showers. WEDNESDAY North to northeast winds 5 to 10 knots. Seas around 2 feet. WEDNESDAY NIGHT Northeast winds near 10 knots. Seas 2 to 3 feet. THURSDAY Northeast winds 10 to 15 knots. Seas 2 to 3 feet. THURSDAY NIGHT Northeast to east winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. $$