GMZ005-092130-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
430 AM EST Tue Dec 9 2025
.SYNOPSIS...Freshening north to northeast breezes are expected
today as a result of a frontal boundary that moved across the
Florida Keys overnight. The front will continue to linger across
the distant Straits of Florida through the afternoon therefore
higher shower coverage is expected in those waters. As the front
departs our waters, breezes will then 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.
$$
GMZ042>044-092130- Hawk Channel from Ocean Reef to Craig Key out to the reef- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- 430 AM EST Tue Dec 9 2025 SMALL CRAFT SHOULD EXERCISE CAUTION TODAY Northeast winds 15 to 20 knots, decreasing to near 15 knots. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of Cosgrove Shoal Light. Nearshore waters choppy, becoming a moderate chop. Numerous showers. TONIGHT Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. Scattered showers. WEDNESDAY North winds near 10 knots, decreasing to 5 to 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop, becoming smooth to a light chop. Isolated showers. WEDNESDAY NIGHT Northwest to north winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Isolated showers. THURSDAY North winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. THURSDAY NIGHT North to northeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. FRIDAY Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. FRIDAY NIGHT East winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Isolated showers. SATURDAY East winds 10 to 15 knots. Seas around 2 feet. Nearshore waters a light to moderate chop. Scattered showers. SATURDAY NIGHT Northeast to east winds near 15 knots. Seas 2 to 3 feet. Nearshore waters a moderate chop. Scattered showers. $$
GMZ042>044-092130- 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- 430 AM EST Tue Dec 9 2025 SMALL CRAFT SHOULD EXERCISE CAUTION TODAY 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 Cosgrove Shoal Light. Nearshore waters choppy, becoming a moderate chop. Numerous showers. TONIGHT Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. Scattered showers. WEDNESDAY North winds near 10 knots, decreasing to 5 to 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop, becoming smooth to a light chop. Isolated showers. WEDNESDAY NIGHT Northwest to north winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Isolated showers. THURSDAY North winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. THURSDAY NIGHT North to northeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. FRIDAY Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. FRIDAY NIGHT East winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Isolated showers. SATURDAY East winds 10 to 15 knots. Seas around 2 feet. Nearshore waters a light to moderate chop. Scattered showers. SATURDAY NIGHT Northeast to east winds near 15 knots. Seas 2 to 3 feet. Nearshore waters a moderate chop. Scattered showers. $$