GMZ005-100330-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1016 AM EST Tue Dec 9 2025
.SYNOPSIS...Moderate to fresh north to northeast breezes are
expected this afternoon, as a frontal boundary remains draped
across the Straits of Florida. As the front slides eastward and
away from the Florida Keys marine zones, breezes will slacken late
tonight through Wednesday. A second weak front will push through
the coastal waters late Wednesday and Wednesday night, with
modestly freshened northwesterly breezes clocking around to the
northeast to east for late week and into the weekend.
The Approximate Shoreward Edge of the Gulf Stream as of December 8...
15 NM South of Dry Tortugas Light...on Loggerhead Key.
13 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
14 NM South of Sand Key Light...off Key West.
18 NM South of Looe Key...off Big Pine Key.
23 NM Southeast of Sombrero Key Light...off Marathon.
18 NM Southeast of Alligator Reef Light...off Islamorada.
12 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 and RTOFS.
$$
GMZ042>044-100330- Hawk Channel from Ocean Reef to Craig Key out to the reef- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- 1016 AM EST Tue Dec 9 2025 SMALL CRAFT SHOULD EXERCISE CAUTION UNTIL WINDS DECREASE THIS AFTERNOON North to northeast winds 15 to 20 knots, decreasing to near 15 knots. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of Cosgrove Shoal Light. Nearshore waters choppy, becoming a moderate chop. Numerous showers. TONIGHT Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. Scattered showers. WEDNESDAY North winds near 10 knots, decreasing to 5 to 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop, becoming smooth to a light chop. Isolated showers. WEDNESDAY NIGHT Northwest to north winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Isolated showers. THURSDAY North winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. THURSDAY NIGHT North to northeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. FRIDAY Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. FRIDAY NIGHT East winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Isolated showers. SATURDAY East winds 10 to 15 knots. Seas around 2 feet. Nearshore waters a light to moderate chop. Scattered showers. SATURDAY NIGHT Northeast to east winds near 15 knots. Seas 2 to 3 feet. Nearshore waters a moderate chop. Scattered showers. $$
GMZ042>044-100330- 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- 1016 AM EST Tue Dec 9 2025 SMALL CRAFT SHOULD EXERCISE CAUTION UNTIL WINDS DECREASE THIS AFTERNOON 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 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. $$