GMZ005-280930-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
429 PM EST Sat Dec 27 2025
.SYNOPSIS...Weak high pressure will meander in the eastern Gulf
over the next few days, resulting in light to gentle breezes.
Mainland nocturnal land breezes may drive brief bouts of gentle to
moderate northerlies in the morning. A healthy cold front is
expected to move through the Keys towards the middle part of next
week. This will lead to freshening northerly breezes throughout
all the Florida Keys coastal waters.
The Approximate Shoreward Edge of the Gulf Stream as of December
27...
18 NM South of Dry Tortugas Light...on Loggerhead Key.
11 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
12 NM South of Sand Key Light...off Key West.
12 NM South of Looe Key...off Big Pine Key.
13 NM Southeast of Sombrero Key Light...off Marathon.
8 NM Southeast of Alligator Reef Light...off Islamorada.
2 NM Southeast of Molasses Reef Light...off Key Largo.
2 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>044-280930- 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- 429 PM EST Sat Dec 27 2025 TONIGHT North winds 5 to 10 knots, becoming north to northeast and increasing to near 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop, becoming a light chop. SUNDAY Northeast to east winds near 10 knots, decreasing to 5 to 10 knots. Seas around 1 foot. Nearshore waters a light chop, becoming smooth to a light chop. SUNDAY NIGHT Northeast to east winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. MONDAY Northeast winds near 5 knots, becoming variable. Seas 1 foot or less. Nearshore waters smooth. MONDAY NIGHT Northwest to north winds near 5 knots, increasing to 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth, becoming smooth to a light chop. TUESDAY Northwest winds near 10 knots, becoming northwest to north and increasing to near 15 knots. Seas 1 to 2 feet. West of Cosgrove Shoal Light, seas 2 to 3 feet, building to 3 to 4 feet, occasionally to 5 feet. Nearshore waters a light chop, becoming a moderate chop. Isolated showers. TUESDAY NIGHT North winds 15 to 20 knots. Seas 1 to 3 feet, except 4 to 5 feet, occasionally to 6 feet west of Cosgrove Shoal Light. Nearshore waters choppy. Isolated showers. WEDNESDAY North winds 15 to 20 knots, decreasing to 10 to 15 knots. Seas 2 to 3 feet, except 3 to 5 feet, occasionally to 6 feet west of Cosgrove Shoal Light. Nearshore waters choppy, becoming a light to moderate chop. WEDNESDAY NIGHT North winds 10 to 15 knots. Seas 1 to 2 feet, except 3 to 4 feet, occasionally to 5 feet west of Cosgrove Shoal Light. Nearshore waters a light to moderate chop. THURSDAY AND THURSDAY NIGHT North winds 10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of Cosgrove Shoal Light. Nearshore waters a light to moderate chop. $$
GMZ042>044-280930- 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- 429 PM EST Sat Dec 27 2025 TONIGHT North winds 5 to 10 knots, becoming north to northeast and increasing to near 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop, becoming a light chop. SUNDAY Northeast to east winds near 10 knots, decreasing to 5 to 10 knots. Seas around 1 foot. Nearshore waters a light chop, becoming smooth to a light chop. SUNDAY NIGHT Northeast to east winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. MONDAY Northeast winds near 5 knots, becoming variable. Seas 1 foot or less. Nearshore waters smooth. MONDAY NIGHT Northwest to north winds near 5 knots, increasing to 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth, becoming smooth to a light chop. TUESDAY Northwest winds near 10 knots, becoming northwest to north and increasing to near 15 knots. Seas 1 to 2 feet. West of Cosgrove Shoal Light, seas 2 to 3 feet, building to 3 to 4 feet, occasionally to 5 feet. Nearshore waters a light chop, becoming a moderate chop. Isolated showers. TUESDAY NIGHT North winds 15 to 20 knots. Seas 1 to 3 feet, except 4 to 5 feet, occasionally to 6 feet west of Cosgrove Shoal Light. Nearshore waters choppy. Isolated showers. WEDNESDAY North winds 15 to 20 knots, decreasing to 10 to 15 knots. Seas 2 to 3 feet, except 3 to 5 feet, occasionally to 6 feet west of Cosgrove Shoal Light. Nearshore waters choppy, becoming a light to moderate chop. WEDNESDAY NIGHT North winds 10 to 15 knots. Seas 1 to 2 feet, except 3 to 4 feet, occasionally to 5 feet west of Cosgrove Shoal Light. Nearshore waters a light to moderate chop. THURSDAY AND THURSDAY NIGHT North winds 10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of Cosgrove Shoal Light. Nearshore waters a light to moderate chop. $$