Hazardous marine condition(s):
Small Craft Advisory
GMZ005-242030-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
425 AM EDT Sat Oct 24 2026
.SYNOPSIS...
Strengthening high pressure centered over the Mid-Atlantic region
will interact with a developing disturbance in the eastern
Caribbean, supporting freshening northeasterly breezes over the
next several days. A Small Craft Advisory is in effect for all
Florida Keys marine zones. Breezes will peak Sunday night through
Tuesday, when strong to near gale breezes will be possible. The
freshening breezes and a surge of moisture may also support
elevated rain and thunderstorm chances through Monday.
The Approximate Shoreward Edge of the Gulf Stream as of October
19, 2026...
46 NM south of Dry Tortugas Light, on Loggerhead Key
18 NM north of Cosgrove Shoal Light, off the Marquesas Keys
12 NM north of Sand Key Light, off Key West
7 NM north-northwest of Looe Key, off Big Pine Key
5 NM southeast of Sombrero Key Light, off Marathon
2 NM south-southeast of Alligator Reef Light, off Islamorada
2 NM northwest of Molasses Reef Light, off Key Largo
3 NM northwest of Carysfort Reef Light, off Ocean Reef
Gulf Stream Information Courtesy of the Naval Oceanographic
Office.
$$
GMZ033-034-242030- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 425 AM EDT Sat Oct 24 2026 SMALL CRAFT ADVISORY IN EFFECT TODAY Northeast winds 20 to 25 knots, becoming north to northeast and decreasing to near 20 knots this afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 6 seconds. A slight chance of showers. TONIGHT North to northeast winds near 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: North to northeast 5 feet at 5 seconds. A slight chance of showers and thunderstorms. SUNDAY North to northeast winds 20 to 25 knots, increasing to near 25 knots. Seas 4 to 6 feet, occasionally to 8 feet, building to 5 to 8 feet, occasionally to 10 feet. Wave Detail: North to northeast 7 feet at 7 seconds. A chance of showers with a slight chance of thunderstorms. SUNDAY NIGHT Northeast winds 25 to 30 knots. Seas building to 7 to 10 feet, occasionally to 13 feet. A chance of showers with a slight chance of thunderstorms. MONDAY Northeast winds near 25 knots. Seas 6 to 9 feet, occasionally to 11 feet. A chance of showers with a slight chance of thunderstorms. MONDAY NIGHT Northeast winds 25 to 30 knots. Seas 6 to 9 feet, occasionally to 11 feet. A slight chance of showers and thunderstorms. TUESDAY North to northeast winds near 25 knots, decreasing to 20 to 25 knots. Seas 5 to 8 feet, occasionally to 10 feet, subsiding to 5 to 7 feet, occasionally to 9 feet. A slight chance of showers. TUESDAY NIGHT Northeast winds 20 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. A slight chance of showers and thunderstorms. WEDNESDAY Northeast winds 20 to 25 knots, becoming 15 to 20 knots in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet. A slight chance of showers. WEDNESDAY NIGHT Northeast winds 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. A slight chance of showers. $$
GMZ033-034-242030- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 425 AM EDT Sat Oct 24 2026 SMALL CRAFT ADVISORY IN EFFECT TODAY Northeast winds 20 to 25 knots, becoming north to northeast and decreasing to near 20 knots this afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 6 seconds. A slight chance of showers. TONIGHT North to northeast winds near 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: North to northeast 5 feet at 5 seconds. A slight chance of showers and thunderstorms. SUNDAY North to northeast winds 20 to 25 knots, increasing to near 25 knots. Seas 4 to 6 feet, occasionally to 8 feet, building to 5 to 8 feet, occasionally to 10 feet. Wave Detail: North to northeast 7 feet at 7 seconds. A chance of showers with a slight chance of thunderstorms. SUNDAY NIGHT Northeast winds 25 to 30 knots. Seas building to 7 to 10 feet, occasionally to 13 feet. A chance of showers with a slight chance of thunderstorms. MONDAY Northeast winds near 25 knots. Seas 6 to 9 feet, occasionally to 11 feet. A chance of showers with a slight chance of thunderstorms. MONDAY NIGHT Northeast winds 25 to 30 knots. Seas 6 to 9 feet, occasionally to 11 feet. A slight chance of showers and thunderstorms. TUESDAY North to northeast winds near 25 knots, decreasing to 20 to 25 knots. Seas 5 to 8 feet, occasionally to 10 feet, subsiding to 5 to 7 feet, occasionally to 9 feet. A slight chance of showers. TUESDAY NIGHT Northeast winds 20 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. A slight chance of showers and thunderstorms. WEDNESDAY Northeast winds 20 to 25 knots, becoming 15 to 20 knots in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet. A slight chance of showers. WEDNESDAY NIGHT Northeast winds 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. A slight chance of showers. $$