Hazardous marine condition(s):
Small Craft Advisory
GMZ005-290930-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
429 PM EST Wed Jan 28 2026
.SYNOPSIS...Fresh northerly breezes will gradually slacken over
the next couple of days as high pressure continues to move across
the southeastern U.S.. Gentle to moderate northerly breezes will
will briefly return Thursday night into early Saturday before a
strong cold front approaches from the Gulf Saturday. Breezes will
back to the northwest as the front arrives at our doorstep, and a
drastic freshening will occur during Saturday. Confidence is
growing for gale-force winds possible by Saturday night with
marine hazards expected to continue through at least Sunday.
The Approximate Shoreward Edge of the Gulf Stream as of January
28...
30 NM South of Dry Tortugas Light...on Loggerhead Key.
14 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
12 NM South of Sand Key Light...off Key West.
15 NM South of Looe Key...off Big Pine Key.
16 NM Southeast of Sombrero Key Light...off Marathon.
11 NM Southeast of Alligator Reef Light...off Islamorada.
7 NM Southeast of Molasses Reef Light...off Key Largo.
5 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.
$$
GMZ032-035-290930- Bayside and Gulfside from Craig Key to west end of Seven Mile Bridge- Gulf of America from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- 429 PM EST Wed Jan 28 2026 SMALL CRAFT ADVISORY IN EFFECT TONIGHT Northwest to north winds near 20 knots, becoming north to northeast after midnight. Seas 3 to 5 feet, occasionally to 6 feet, except 4 to 6 feet, occasionally to 8 feet west of the Marquesas Keys. Nearshore waters rough. Isolated showers. THURSDAY North to northeast winds near 20 knots, decreasing to 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. West of the Marquesas Keys, seas 5 to 6 feet, occasionally to 8 feet, subsiding to 4 to 5 feet, occasionally to 6 feet. Nearshore waters rough, becoming choppy. THURSDAY NIGHT Northeast winds 15 to 20 knots. Seas 2 to 3 feet. Nearshore waters choppy. Scattered showers. FRIDAY North to northeast winds 15 to 20 knots. Seas 2 to 3 feet. Nearshore waters choppy. Scattered showers. FRIDAY NIGHT North winds near 15 knots, becoming northwest to north 10 to 15 knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet. Nearshore waters a moderate chop, becoming a light to moderate chop. Isolated showers. SATURDAY West winds 15 to 20 knots, becoming northwest 25 to 30 knots in the afternoon. Seas 1 to 2 feet, building to 3 to 5 feet, occasionally to 6 feet. West of the Marquesas Keys, seas 2 to 3 feet, building to 6 to 7 feet, occasionally to 9 feet. Nearshore waters choppy, becoming extremely rough. Scattered showers. SATURDAY NIGHT Northwest winds 30 to 35 knots, decreasing to near 30 knots. Seas 5 to 7 feet, occasionally to 9 feet, except 9 to 12 feet, occasionally to 15 feet west of the Marquesas Keys. Nearshore waters extremely rough. Isolated showers. SUNDAY Northwest to north winds 25 to 30 knots, decreasing to near 25 knots. Seas 5 to 7 feet, occasionally to 9 feet, except 9 to 12 feet, occasionally to 15 feet west of the Marquesas Keys. Nearshore waters extremely rough. SUNDAY NIGHT Northwest to north winds 20 to 25 knots, becoming north 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. West of the Marquesas Keys, seas 8 to 10 feet, occasionally to 13 feet, subsiding to 6 to 8 feet, occasionally to 10 feet. Nearshore waters very rough, becoming choppy. MONDAY North winds 15 to 20 knots, decreasing to near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 4 to 6 feet, occasionally to 8 feet west of the Marquesas Keys. Nearshore waters choppy, becoming a moderate chop. MONDAY NIGHT North to northeast winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet. West of the Marquesas Keys, seas 4 to 5 feet, occasionally to 6 feet, subsiding to 3 to 4 feet, occasionally to 5 feet. Nearshore waters a light to moderate chop. $$
GMZ032-035-290930- Bayside and Gulfside from Craig Key to west end of Seven Mile Bridge- Gulf of America from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- 429 PM EST Wed Jan 28 2026 SMALL CRAFT ADVISORY IN EFFECT TONIGHT Northwest to north winds near 20 knots, becoming north to northeast after midnight. Seas 3 to 5 feet, occasionally to 6 feet, except 4 to 6 feet, occasionally to 8 feet west of the Marquesas Keys. Nearshore waters rough. Isolated showers. THURSDAY North to northeast winds near 20 knots, decreasing to 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. West of the Marquesas Keys, seas 5 to 6 feet, occasionally to 8 feet, subsiding to 4 to 5 feet, occasionally to 6 feet. Nearshore waters rough, becoming choppy. THURSDAY NIGHT Northeast winds 15 to 20 knots. Seas 2 to 3 feet. Nearshore waters choppy. Scattered showers. FRIDAY North to northeast winds 15 to 20 knots. Seas 2 to 3 feet. Nearshore waters choppy. Scattered showers. FRIDAY NIGHT North winds near 15 knots, becoming northwest to north 10 to 15 knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet. Nearshore waters a moderate chop, becoming a light to moderate chop. Isolated showers. SATURDAY West winds 15 to 20 knots, becoming northwest 25 to 30 knots in the afternoon. Seas 1 to 2 feet, building to 3 to 5 feet, occasionally to 6 feet. West of the Marquesas Keys, seas 2 to 3 feet, building to 6 to 7 feet, occasionally to 9 feet. Nearshore waters choppy, becoming extremely rough. Scattered showers. SATURDAY NIGHT Northwest winds 30 to 35 knots, decreasing to near 30 knots. Seas 5 to 7 feet, occasionally to 9 feet, except 9 to 12 feet, occasionally to 15 feet west of the Marquesas Keys. Nearshore waters extremely rough. Isolated showers. SUNDAY Northwest to north winds 25 to 30 knots, decreasing to near 25 knots. Seas 5 to 7 feet, occasionally to 9 feet, except 9 to 12 feet, occasionally to 15 feet west of the Marquesas Keys. Nearshore waters extremely rough. SUNDAY NIGHT Northwest to north winds 20 to 25 knots, becoming north 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. West of the Marquesas Keys, seas 8 to 10 feet, occasionally to 13 feet, subsiding to 6 to 8 feet, occasionally to 10 feet. Nearshore waters very rough, becoming choppy. MONDAY North winds 15 to 20 knots, decreasing to near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 4 to 6 feet, occasionally to 8 feet west of the Marquesas Keys. Nearshore waters choppy, becoming a moderate chop. MONDAY NIGHT North to northeast winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet. West of the Marquesas Keys, seas 4 to 5 feet, occasionally to 6 feet, subsiding to 3 to 4 feet, occasionally to 5 feet. Nearshore waters a light to moderate chop. $$