Hazardous marine condition(s):
Short Term Forecast
GMZ005-120230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1022 AM EDT Sat Oct 11 2025
.SYNOPSIS...An elongated area of low pressure across the Keys will
continue slowly drifting northeastward today. This will support
one more day of well above normal rain chances along with south to
southwesterly light to gentle breezes gradually backing to the
northwest to north tonight and Sunday. This low will continue
organizing and strengthening as it heads northeastward adjacent to
the Mid- Atlantic coast. As it does this, it will drive an early
season cold front towards the Keys, further shifting winds to the
north to northeast. Northerly swells will be possible in our
western marine zones today and tonight due to the influence of the
low pressure system. In the wake of the front, high pressure
builds across the eastern United States leading to freshening
northeasterly breezes heading towards mid- week.
The Approximate Shoreward Edge of the Gulf Stream as of October
08...
46 NM South of Dry Tortugas Light...on Loggerhead Key.
27 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
21 NM South of Sand Key Light...off Key West.
30 NM South of Looe Key...off Big Pine Key.
14 NM Southeast of Sombrero Key Light...off Marathon.
8 NM Southeast of Alligator Reef Light...off Islamorada.
7 NM Southeast of Molasses Reef Light...off Key Largo.
6 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.
$$
GMZ033-034-120230- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 1022 AM EDT Sat Oct 11 2025 THIS AFTERNOON Northwest winds 5 to 10 knots, increasing to near 10 knots. Seas 2 to 4 feet, occasionally to 5 feet due to a northerly swell. Wave Detail: Northwest to north 3 feet at 7 seconds. Scattered showers and isolated thunderstorms. TONIGHT Northwest winds near 10 knots, decreasing to 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Northwest to north 3 feet at 6 seconds. Isolated showers. SUNDAY North winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Northwest 2 feet at 6 seconds. Isolated showers. SUNDAY NIGHT North winds 5 to 10 knots, becoming north to northeast. Seas 2 to 3 feet. Isolated showers. MONDAY North to northeast winds 5 to 10 knots, increasing to near 10 knots. Seas 2 to 3 feet. Isolated showers. MONDAY NIGHT North to northeast winds near 10 knots, becoming northeast and increasing to 10 to 15 knots. Seas 2 to 3 feet. Isolated showers. TUESDAY Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Isolated showers. TUESDAY NIGHT Northeast winds near 15 knots, increasing to 15 to 20 knots. Seas 2 to 3 feet, building to 2 to 4 feet, occasionally to 5 feet. Isolated showers. WEDNESDAY Northeast winds 15 to 20 knots, decreasing to 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet. Isolated showers. WEDNESDAY NIGHT Northeast winds near 15 knots. Seas 2 to 3 feet. Isolated showers. $$
GMZ033-034-120230- 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- 1022 AM EDT Sat Oct 11 2025 THIS AFTERNOON Northwest winds 5 to 10 knots, increasing to near 10 knots. Seas 2 to 4 feet, occasionally to 5 feet due to a northerly swell. Wave Detail: Northwest to north 3 feet at 7 seconds. Scattered showers and isolated thunderstorms. TONIGHT Northwest winds near 10 knots, decreasing to 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Northwest to north 3 feet at 6 seconds. Isolated showers. SUNDAY North winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Northwest 2 feet at 6 seconds. Isolated showers. SUNDAY NIGHT North winds 5 to 10 knots, becoming north to northeast. Seas 2 to 3 feet. Isolated showers. MONDAY North to northeast winds 5 to 10 knots, increasing to near 10 knots. Seas 2 to 3 feet. Isolated showers. MONDAY NIGHT North to northeast winds near 10 knots, becoming northeast and increasing to 10 to 15 knots. Seas 2 to 3 feet. Isolated showers. TUESDAY Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Isolated showers. TUESDAY NIGHT Northeast winds near 15 knots, increasing to 15 to 20 knots. Seas 2 to 3 feet, building to 2 to 4 feet, occasionally to 5 feet. Isolated showers. WEDNESDAY Northeast winds 15 to 20 knots, decreasing to 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet. Isolated showers. WEDNESDAY NIGHT Northeast winds near 15 knots. Seas 2 to 3 feet. Isolated showers. $$