GMZ005-051530-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1027 PM EST Wed Feb 4 2026
.SYNOPSIS...High pressure now east of the Florida Peninsula will
slowly weaken as it moves eastward tonight, supporting light and
at times variable winds. A strong cold front will push through
the Keys marine zones on Thursday and Thursday evening. This will
bring another push of freshened breezes and building seas for
Friday into the weekend, as high pressure builds over the Mid-
Atlantic. As the high slides southeastward Sunday through early
next week, breezes will slacken.
The Approximate Shoreward Edge of the Gulf Stream as of February
4...
17 NM South of Dry Tortugas Light...on Loggerhead Key.
15 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
14 NM South of Sand Key Light...off Key West.
17 NM South of Looe Key...off Big Pine Key.
14 NM Southeast of Sombrero Key Light...off Marathon.
9 NM Southeast of Alligator Reef Light...off Islamorada.
4 NM Southeast of Molasses Reef Light...off Key Largo.
5 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.
$$
GMZ033-034-051530- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 1027 PM EST Wed Feb 4 2026 SMALL CRAFT ADVISORY LIKELY WILL BE REQUIRED THURSDAY OVERNIGHT Variable winds 5 to 10 knots, becoming southwest. Seas around 1 foot. Wave Detail: Northeast 1 foot at 3 seconds. THURSDAY Southwest to west winds near 10 knots, becoming northwest to north and increasing to 25 to 30 knots. Seas 1 to 2 feet, building to 5 to 7 feet, occasionally to 9 feet. Wave Detail: Southwest to west 3 feet at 3 seconds, becoming northwest 7 feet at 7 seconds. Numerous showers. THURSDAY NIGHT Northwest to north winds near 25 knots, decreasing to near 20 knots. Seas 7 to 10 feet, occasionally to 13 feet. Wave Detail: Northwest 9 feet at 8 seconds. FRIDAY Northwest to north winds 15 to 20 knots, decreasing to near 15 knots. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 4 to 5 feet, occasionally to 6 feet. FRIDAY NIGHT Northwest winds near 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. SATURDAY Northwest to north winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. SATURDAY NIGHT North winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. SUNDAY Northeast winds 10 to 15 knots, decreasing to 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet. SUNDAY NIGHT North to northeast winds 5 to 10 knots, increasing to near 10 knots. Seas around 2 feet. MONDAY AND MONDAY NIGHT Northeast winds near 10 knots. Seas around 2 feet. $$
GMZ033-034-051530- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 1027 PM EST Wed Feb 4 2026 SMALL CRAFT ADVISORY LIKELY WILL BE REQUIRED THURSDAY OVERNIGHT Variable winds 5 to 10 knots, becoming southwest. Seas around 1 foot. Wave Detail: Northeast 1 foot at 3 seconds. THURSDAY Southwest to west winds near 10 knots, becoming northwest to north and increasing to 25 to 30 knots. Seas 1 to 2 feet, building to 5 to 7 feet, occasionally to 9 feet. Wave Detail: Southwest to west 3 feet at 3 seconds, becoming northwest 7 feet at 7 seconds. Numerous showers. THURSDAY NIGHT Northwest to north winds near 25 knots, decreasing to near 20 knots. Seas 7 to 10 feet, occasionally to 13 feet. Wave Detail: Northwest 9 feet at 8 seconds. FRIDAY Northwest to north winds 15 to 20 knots, decreasing to near 15 knots. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 4 to 5 feet, occasionally to 6 feet. FRIDAY NIGHT Northwest winds near 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. SATURDAY Northwest to north winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. SATURDAY NIGHT North winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. SUNDAY Northeast winds 10 to 15 knots, decreasing to 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet. SUNDAY NIGHT North to northeast winds 5 to 10 knots, increasing to near 10 knots. Seas around 2 feet. MONDAY AND MONDAY NIGHT Northeast winds near 10 knots. Seas around 2 feet. $$