Hazardous marine condition(s):
Marine Weather Statement
Small Craft Advisory
GMZ005-280930-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
424 PM EST Thu Nov 27 2025
.SYNOPSIS...Breezes will back northwesterly to north tonight as a
cold front pushes across across south Florida. Post frontal
passage, breezes will rapidly freshen, and the fresh to strong
breezes will linger through the weekend. Small Craft Advisories
are likely required through the end of the weekend. Breezes will
gradually slacken over the beginning of next week. Shower activity
will wax and wane throughout the marine forecast period.
The Approximate Shoreward Edge of the Gulf Stream as of November
22...
35 NM South of Dry Tortugas Light...on Loggerhead Key.
12 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
6 NM South of Sand Key Light...off Key West.
7 NM South of Looe Key...off Big Pine Key.
8 NM Southeast of Sombrero Key Light...off Marathon.
9 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>044-280930- 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- 424 PM EST Thu Nov 27 2025 SMALL CRAFT ADVISORY IN EFFECT TONIGHT Variable winds 5 to 10 knots early, becoming northwest to north 15 to 20 knots this evening, then becoming north to northeast 20 to 25 knots after midnight. Seas 1 to 2 feet, building to 2 to 3 feet. West of Cosgrove Shoal Light, seas 2 to 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet. Nearshore waters smooth to a light chop, becoming very rough. Scattered showers. FRIDAY North to northeast winds 20 to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 5 to 7 feet, occasionally to 9 feet west of Cosgrove Shoal Light. Nearshore waters very rough. Isolated showers. FRIDAY NIGHT Northeast winds 20 to 25 knots, decreasing to near 20 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 5 to 6 feet, occasionally to 8 feet west of Cosgrove Shoal Light. Nearshore waters very rough, becoming rough. Isolated showers. SATURDAY Northeast to east winds near 20 knots. Seas 3 to 4 feet, occasionally to 5 feet, except 4 to 6 feet, occasionally to 8 feet west of Cosgrove Shoal Light. Nearshore waters rough. Isolated showers. SATURDAY NIGHT East winds near 20 knots, decreasing to 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Nearshore waters rough, becoming choppy. Scattered showers. SUNDAY East winds near 15 knots, decreasing to 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters a moderate chop, becoming a light to moderate chop. Scattered showers. SUNDAY NIGHT East winds near 10 knots. Seas 2 to 3 feet, subsiding to around 2 feet. Nearshore waters a light chop. Isolated showers. MONDAY East winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. Isolated showers. MONDAY NIGHT East to southeast winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. TUESDAY Southeast to south winds near 10 knots, becoming southwest. Seas 1 to 2 feet. Nearshore waters a light chop. TUESDAY NIGHT West to northwest winds 5 to 10 knots, becoming northwest to north. Seas around 1 foot. Nearshore waters smooth to a light 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- 424 PM EST Thu Nov 27 2025 SMALL CRAFT ADVISORY IN EFFECT TONIGHT Variable winds 5 to 10 knots early, becoming northwest to north 15 to 20 knots this evening, then becoming north to northeast 20 to 25 knots after midnight. Seas 1 to 2 feet, building to 2 to 3 feet. West of Cosgrove Shoal Light, seas 2 to 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet. Nearshore waters smooth to a light chop, becoming very rough. Scattered showers. FRIDAY North to northeast winds 20 to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 5 to 7 feet, occasionally to 9 feet west of Cosgrove Shoal Light. Nearshore waters very rough. Isolated showers. FRIDAY NIGHT Northeast winds 20 to 25 knots, decreasing to near 20 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 5 to 6 feet, occasionally to 8 feet west of Cosgrove Shoal Light. Nearshore waters very rough, becoming rough. Isolated showers. SATURDAY Northeast to east winds near 20 knots. Seas 3 to 4 feet, occasionally to 5 feet, except 4 to 6 feet, occasionally to 8 feet west of Cosgrove Shoal Light. Nearshore waters rough. Isolated showers. SATURDAY NIGHT East winds near 20 knots, decreasing to 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Nearshore waters rough, becoming choppy. Scattered showers. SUNDAY East winds near 15 knots, decreasing to 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters a moderate chop, becoming a light to moderate chop. Scattered showers. SUNDAY NIGHT East winds near 10 knots. Seas 2 to 3 feet, subsiding to around 2 feet. Nearshore waters a light chop. Isolated showers. MONDAY East winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. Isolated showers. MONDAY NIGHT East to southeast winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. TUESDAY Southeast to south winds near 10 knots, becoming southwest. Seas 1 to 2 feet. Nearshore waters a light chop. TUESDAY NIGHT West to northwest winds 5 to 10 knots, becoming northwest to north. Seas around 1 foot. Nearshore waters smooth to a light chop. $$