Hazardous marine condition(s):
Small Craft Advisory
GMZ005-272030-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
426 AM EDT Tue Oct 27 2026
.SYNOPSIS...
Sprawling high pressure over the eastern United
States will be reinforced by a secondary high north of the
Dakotas. As these features interact with a persistent low south of
the Bahamas, this will sustain frequent near gale gusts through
this morning, especially across the Straits of Florida, and extreme
eastern Hawk Channel. In addition, pulses of low level moisture
will support elevated shower chances, mainly in the eastern marine
zones. The secondary high will slide into the central North
Atlantic for the middle to latter part of the work week,
supporting slackening northeast to east breezes.
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.
$$
GMZ033-034-272030- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 426 AM EDT Tue Oct 27 2026 SMALL CRAFT ADVISORY IN EFFECT TODAY North to northeast winds near 25 knots, decreasing to 20 to 25 knots in the afternoon. Seas 5 to 8 feet, occasionally to 10 feet. Wave Detail: North to northeast 7 feet at 6 seconds. A slight chance of showers. TONIGHT North to northeast winds near 25 knots. Seas 5 to 8 feet, occasionally to 10 feet. Wave Detail: North to northeast 8 feet at 6 seconds. A chance of showers. WEDNESDAY North to northeast winds 20 to 25 knots, decreasing to 10 to 15 knots in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 3 to 5 feet, occasionally to 6 feet. Wave Detail: North 7 feet at 6 seconds, becoming northwest to north 4 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms. WEDNESDAY NIGHT Northeast winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. A slight chance of showers and thunderstorms. THURSDAY Northeast to east winds near 10 knots, decreasing to 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet, subsiding to 1 to 3 feet. A slight chance of showers and thunderstorms. THURSDAY NIGHT Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. FRIDAY East winds near 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. FRIDAY NIGHT Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet. SATURDAY East winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers. SATURDAY NIGHT Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet. $$
GMZ033-034-272030- 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- 426 AM EDT Tue Oct 27 2026 SMALL CRAFT ADVISORY IN EFFECT TODAY North to northeast winds near 25 knots, decreasing to 20 to 25 knots in the afternoon. Seas 5 to 8 feet, occasionally to 10 feet. Wave Detail: North to northeast 7 feet at 6 seconds. A slight chance of showers. TONIGHT North to northeast winds near 25 knots. Seas 5 to 8 feet, occasionally to 10 feet. Wave Detail: North to northeast 8 feet at 6 seconds. A chance of showers. WEDNESDAY North to northeast winds 20 to 25 knots, decreasing to 10 to 15 knots in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 3 to 5 feet, occasionally to 6 feet. Wave Detail: North 7 feet at 6 seconds, becoming northwest to north 4 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms. WEDNESDAY NIGHT Northeast winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. A slight chance of showers and thunderstorms. THURSDAY Northeast to east winds near 10 knots, decreasing to 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet, subsiding to 1 to 3 feet. A slight chance of showers and thunderstorms. THURSDAY NIGHT Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. FRIDAY East winds near 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. FRIDAY NIGHT Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet. SATURDAY East winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers. SATURDAY NIGHT Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet. $$