GMZ005-100930-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
417 PM EST Sun Nov 9 2025
.SYNOPSIS...A potent cold front will push through the Florida
Keys marine zones on Monday, bringing fresh to strong northerly
winds by Monday afternoon. While the next high builds in behind
the front, winds will shift out of the northeast and gradually
slacken. Moderate to occasionally fresh breezes will remain
possible through the end of the work week.
The Approximate Shoreward Edge of the Gulf Stream as of November
4...
42 NM South of Dry Tortugas Light...on Loggerhead Key.
42 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
30 NM South of Sand Key Light...off Key West.
29 NM South of Looe Key...off Big Pine Key.
27 NM Southeast of Sombrero Key Light...off Marathon.
14 NM Southeast of Alligator Reef Light...off Islamorada.
4 NM Southeast of Molasses Reef Light...off Key Largo.
3 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>075-100930- 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- 417 PM EST Sun Nov 9 2025 .TONIGHT..Variable winds near 5 knots, becoming west to northwest and increasing to 10 to 15 knots. Seas around 1 foot, building to 1 to 2 feet. Wave Detail: East 1 foot at 3 seconds. Scattered showers. MONDAY West to northwest winds near 15 knots, becoming northwest to north and increasing to 25 to 30 knots. Seas 2 to 4 feet, building to 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northwest 2 feet at 4 seconds, becoming northwest 6 feet at 6 seconds. Scattered showers. MONDAY NIGHT Northwest to north winds near 30 knots. Seas 5 to 8 feet, occasionally to 10 feet, building to 8 to 11 feet, occasionally to 14 feet. Wave Detail: Northwest to north 8 feet at 7 seconds, becoming north to northeast 9 feet at 7 seconds and northwest 9 feet at 9 seconds. TUESDAY North to northeast winds 25 to 30 knots, decreasing to near 25 knots. Seas 8 to 11 feet, occasionally to 14 feet, subsiding to 7 to 10 feet, occasionally to 12 feet. TUESDAY NIGHT Northeast winds 20 to 25 knots, decreasing to near 20 knots. Seas 6 to 9 feet, occasionally to 11 feet. WEDNESDAY Northeast to east winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Isolated showers. WEDNESDAY NIGHT Northeast to east winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Isolated showers. THURSDAY AND THURSDAY NIGHT Northeast winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Isolated showers. FRIDAY Northeast winds near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Isolated showers. FRIDAY NIGHT Northeast to east winds near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. $$
GMZ052>055-072>075-100930- 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- 417 PM EST Sun Nov 9 2025 .TONIGHT..Variable winds near 5 knots, becoming west to northwest and increasing to 10 to 15 knots. Seas around 1 foot, building to 1 to 2 feet. Wave Detail: East 1 foot at 3 seconds. Scattered showers. MONDAY West to northwest winds near 15 knots, becoming northwest to north and increasing to 25 to 30 knots. Seas 2 to 4 feet, building to 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northwest 2 feet at 4 seconds, becoming northwest 6 feet at 6 seconds. Scattered showers. MONDAY NIGHT Northwest to north winds near 30 knots. Seas 5 to 8 feet, occasionally to 10 feet, building to 8 to 11 feet, occasionally to 14 feet. Wave Detail: Northwest to north 8 feet at 7 seconds, becoming north to northeast 9 feet at 7 seconds and northwest 9 feet at 9 seconds. TUESDAY North to northeast winds 25 to 30 knots, decreasing to near 25 knots. Seas 8 to 11 feet, occasionally to 14 feet, subsiding to 7 to 10 feet, occasionally to 12 feet. TUESDAY NIGHT Northeast winds 20 to 25 knots, decreasing to near 20 knots. Seas 6 to 9 feet, occasionally to 11 feet. WEDNESDAY Northeast to east winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Isolated showers. WEDNESDAY NIGHT Northeast to east winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Isolated showers. THURSDAY AND THURSDAY NIGHT Northeast winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Isolated showers. FRIDAY Northeast winds near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Isolated showers. FRIDAY NIGHT Northeast to east winds near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. $$