GMZ005-032315-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
614 AM EST Wed Dec 3 2025
.SYNOPSIS...A cold frontal system extending from Cape Hatteras to
the middle of the Gulf will meander across the Florida Keys today
and tonight. Breezes will veer northeasterly and freshen tonight
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.
$$
GMZ042>044-032315- Hawk Channel from Ocean Reef to Craig Key out to the reef- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- 614 AM EST Wed Dec 3 2025 TODAY North winds 5 to 10 knots. Seas around 1 foot, except building to 1 to 2 feet west of Cosgrove Shoal Light. Nearshore waters smooth to a light chop. TONIGHT North to northeast winds near 10 knots, increasing to 10 to 15 knots. Seas 1 to 2 feet, except building to 2 to 3 feet west of Cosgrove Shoal Light. Nearshore waters a light chop, building to a light to moderate chop. THURSDAY Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet, except subsiding to around 2 feet west of Cosgrove Shoal Light. Nearshore waters a light to moderate chop. THURSDAY NIGHT Northeast to east winds 10 to 15 knots. Seas around 2 feet. Nearshore waters a light to moderate chop. FRIDAY East to southeast winds 10 to 15 knots, decreasing to near 10 knots. Seas subsiding to 1 to 2 feet. Nearshore waters a light to moderate chop, becoming a light chop. FRIDAY NIGHT East to southeast winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. SATURDAY Southeast winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. Isolated showers. SATURDAY NIGHT Southeast to south winds 5 to 10 knots, increasing to near 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop, becoming a light chop. Isolated showers. SUNDAY South to southwest winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Scattered showers. SUNDAY NIGHT Southwest to west winds near 10 knots. Seas 1 to 2 feet, except building to around 2 feet west of Cosgrove Shoal Light. Nearshore waters a light chop. Scattered showers. $$
GMZ042>044-032315- Hawk Channel from Ocean Reef to Craig Key out to the reef- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- 614 AM EST Wed Dec 3 2025 TODAY North winds 5 to 10 knots. Seas around 1 foot, except building to 1 to 2 feet west of Cosgrove Shoal Light. Nearshore waters smooth to a light chop. TONIGHT North to northeast winds near 10 knots, increasing to 10 to 15 knots. Seas 1 to 2 feet, except building to 2 to 3 feet west of Cosgrove Shoal Light. Nearshore waters a light chop, building to a light to moderate chop. THURSDAY Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet, except subsiding to around 2 feet west of Cosgrove Shoal Light. Nearshore waters a light to moderate chop. THURSDAY NIGHT Northeast to east winds 10 to 15 knots. Seas around 2 feet. Nearshore waters a light to moderate chop. FRIDAY East to southeast winds 10 to 15 knots, decreasing to near 10 knots. Seas subsiding to 1 to 2 feet. Nearshore waters a light to moderate chop, becoming a light chop. FRIDAY NIGHT East to southeast winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. SATURDAY Southeast winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. Isolated showers. SATURDAY NIGHT Southeast to south winds 5 to 10 knots, increasing to near 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop, becoming a light chop. Isolated showers. SUNDAY South to southwest winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Scattered showers. SUNDAY NIGHT Southwest to west winds near 10 knots. Seas 1 to 2 feet, except building to around 2 feet west of Cosgrove Shoal Light. Nearshore waters a light chop. Scattered showers. $$