GMZ005-041530-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1021 PM EST Wed Dec 3 2025
.SYNOPSIS...A cold frontal system will meander across the Florida
Keys overnight. Breezes will veer northeasterly and freshen
overnight 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.
$$
GMZ054-055-074-075-041530- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 1021 PM EST Wed Dec 3 2025 OVERNIGHT North to northeast winds 10 to 15 knots, becoming northeast to east. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at 3 seconds and west to northwest 2 feet at 6 seconds. THURSDAY Northeast to east winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Northeast to east 3 feet at 4 seconds and west to northwest 2 feet at 6 seconds. THURSDAY NIGHT East winds near 15 knots. Seas 2 to 4 feet. Wave Detail: Northeast to east 3 feet at 5 seconds and west to northwest 1 foot at 6 seconds. FRIDAY East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. FRIDAY NIGHT East to southeast winds near 10 knots. Seas 2 to 3 feet. SATURDAY Southeast winds near 10 knots. Seas around 2 feet. Isolated showers. SATURDAY NIGHT Southeast to south winds near 10 knots, increasing to 10 to 15 knots. Seas 1 to 2 feet, building to around 2 feet. Scattered showers. SUNDAY South to southwest winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers. SUNDAY NIGHT Southwest to west winds near 10 knots. Seas around 2 feet. Scattered showers. MONDAY West to northwest winds 10 to 15 knots, becoming northwest to north. Seas around 2 feet, building to 2 to 4 feet, occasionally to 5 feet. Scattered showers. MONDAY NIGHT North to northeast winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 6 feet, building to 4 to 6 feet, occasionally to 8 feet. Isolated showers. $$
GMZ054-055-074-075-041530- 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 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- 1021 PM EST Wed Dec 3 2025 OVERNIGHT North to northeast winds 10 to 15 knots, becoming northeast to east. Seas 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. 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. 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, building to around 2 feet. Scattered showers. SUNDAY South to southwest winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers. SUNDAY NIGHT Southwest to west winds near 10 knots. Seas around 2 feet. Scattered showers. MONDAY West to northwest winds 10 to 15 knots, becoming northwest to north. Seas around 2 feet, building to 2 to 4 feet, occasionally to 5 feet. Scattered showers. MONDAY NIGHT North to northeast winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 6 feet, building to 4 to 6 feet, occasionally to 8 feet. Isolated showers. $$