Hazardous marine condition(s):
Short Term Forecast
GMZ005-090945-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
435 PM EST Mon Dec 8 2025
.SYNOPSIS...Breezes will freshen and clock around to the north to
northeast tonight as a fractured frontal boundary move across the
Florida Keys marine zones. The front will stall across the
Straits of Florida, with the highest shower coverage focused in
the distant coastal waters south of the Island Chain. Breezes
will fluctuate between gentle and moderate during the week.
The Approximate Shoreward Edge of the Gulf Stream as
of December 4...
21 NM South of Dry Tortugas Light...on Loggerhead Key.
21 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
22 NM South of Sand Key Light...off Key West.
15 NM South of Looe Key...off Big Pine Key.
8 NM Southeast of Sombrero Key Light...off Marathon.
6 NM Southeast of Alligator Reef Light...off Islamorada.
3 NM Southeast of Molasses Reef Light...off Key Largo.
1 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.
$$
GMZ032-035-090945- Bayside and Gulfside from Craig Key to west end of Seven Mile Bridge- Gulf of America from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- 435 PM EST Mon Dec 8 2025 SMALL CRAFT SHOULD EXERCISE CAUTION FOR INCREASING WINDS TONIGHT West winds 10 to 15 knots, becoming north to northeast and increasing to 15 to 20 knots. Seas 1 to 2 feet, building to around 2 feet. West of the Marquesas Keys, seas around 2 feet, building to 2 to 3 feet. Nearshore waters a light to moderate chop, becoming choppy. Scattered showers and isolated thunderstorms. TUESDAY North to northeast winds 15 to 20 knots, decreasing to near 15 knots. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters choppy, becoming a moderate chop. Scattered showers. TUESDAY NIGHT Northeast winds 10 to 15 knots. Seas 2 to 3 feet, except 2 to 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters a light to moderate chop. Scattered showers. WEDNESDAY North to northeast winds near 10 knots, decreasing to 5 to 10 knots. Seas subsiding to 1 to 2 feet. Nearshore waters a light chop, becoming smooth to a light chop. Isolated showers. WEDNESDAY NIGHT North winds 5 to 10 knots. Seas 1 to 2 feet. Nearshore waters smooth to a light chop. Isolated showers. THURSDAY North to northeast winds near 10 knots. Seas 1 to 2 feet, subsiding to around 1 foot. Nearshore waters a light chop. Isolated showers. THURSDAY NIGHT AND FRIDAY Northeast winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. Isolated showers. FRIDAY NIGHT Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light chop. Isolated showers. SATURDAY Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Isolated showers. SATURDAY NIGHT Northeast winds near 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a moderate chop. Isolated showers. $$
GMZ032-035-090945- Bayside and Gulfside from Craig Key to west end of Seven Mile Bridge- Gulf of America from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- 435 PM EST Mon Dec 8 2025 SMALL CRAFT SHOULD EXERCISE CAUTION FOR INCREASING WINDS TONIGHT West winds 10 to 15 knots, becoming north to northeast and increasing to 15 to 20 knots. Seas 1 to 2 feet, building to around 2 feet. West of the Marquesas Keys, seas around 2 feet, building to 2 to 3 feet. Nearshore waters a light to moderate chop, becoming choppy. Scattered showers and isolated thunderstorms. TUESDAY North to northeast winds 15 to 20 knots, decreasing to near 15 knots. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters choppy, becoming a moderate chop. Scattered showers. TUESDAY NIGHT Northeast winds 10 to 15 knots. Seas 2 to 3 feet, except 2 to 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters a light to moderate chop. Scattered showers. WEDNESDAY North to northeast winds near 10 knots, decreasing to 5 to 10 knots. Seas subsiding to 1 to 2 feet. Nearshore waters a light chop, becoming smooth to a light chop. Isolated showers. WEDNESDAY NIGHT North winds 5 to 10 knots. Seas 1 to 2 feet. Nearshore waters smooth to a light chop. Isolated showers. THURSDAY North to northeast winds near 10 knots. Seas 1 to 2 feet, subsiding to around 1 foot. Nearshore waters a light chop. Isolated showers. THURSDAY NIGHT AND FRIDAY Northeast winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. Isolated showers. FRIDAY NIGHT Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light chop. Isolated showers. SATURDAY Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Isolated showers. SATURDAY NIGHT Northeast winds near 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a moderate chop. Isolated showers. $$