GMZ005-240230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1028 AM EDT Fri Oct 23 2026
.SYNOPSIS...
High pressure centered just north of the Great Lakes region will
continue to slide eastward and strengthen over the next several
days. The high will interact with a developing disturbance in the
eastern Caribbean, supporting freshening northeasterly breezes
over the next several days. 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 isolated strong thunderstorm chances Friday
night 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.
$$
GMZ033-034-240230- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 1028 AM EDT Fri Oct 23 2026 SMALL CRAFT EXERCISE CAUTION THIS AFTERNOON Northeast winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 4 feet at 5 seconds. A slight chance of showers. TONIGHT Northeast winds 15 to 20 knots, increasing to 20 to 25 knots after midnight. Seas building to 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 4 feet at 5 seconds, becoming northeast 6 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms. SATURDAY Northeast winds 20 to 25 knots, becoming north to northeast and decreasing to 15 to 20 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: North to northeast 6 feet at 6 seconds. A slight chance of showers. SATURDAY NIGHT North to northeast winds near 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. A slight chance of showers. SUNDAY North to northeast winds 20 to 25 knots, increasing to near 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. A chance of showers. SUNDAY NIGHT Northeast winds 25 to 30 knots. Seas building to 6 to 9 feet, occasionally to 11 feet. A chance of showers. MONDAY North to northeast winds near 25 knots. Seas 6 to 9 feet, occasionally to 11 feet. A chance of showers. MONDAY NIGHT North to northeast winds 25 to 30 knots. Seas 6 to 9 feet, occasionally to 11 feet. A slight chance of showers. TUESDAY North to northeast winds near 25 knots, decreasing to 20 to 25 knots in the afternoon. Seas 5 to 8 feet, occasionally to 10 feet. A slight chance of showers. TUESDAY NIGHT Northeast winds near 25 knots. Seas 5 to 8 feet, occasionally to 10 feet. A slight chance of showers. $$
GMZ033-034-240230- 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- 1028 AM EDT Fri Oct 23 2026 SMALL CRAFT EXERCISE CAUTION THIS AFTERNOON Northeast winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 4 feet at 5 seconds. A slight chance of showers. TONIGHT Northeast winds 15 to 20 knots, increasing to 20 to 25 knots after midnight. Seas building to 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 4 feet at 5 seconds, becoming northeast 6 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms. SATURDAY Northeast winds 20 to 25 knots, becoming north to northeast and decreasing to 15 to 20 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: North to northeast 6 feet at 6 seconds. A slight chance of showers. SATURDAY NIGHT North to northeast winds near 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. A slight chance of showers. SUNDAY North to northeast winds 20 to 25 knots, increasing to near 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. A chance of showers. SUNDAY NIGHT Northeast winds 25 to 30 knots. Seas building to 6 to 9 feet, occasionally to 11 feet. A chance of showers. MONDAY North to northeast winds near 25 knots. Seas 6 to 9 feet, occasionally to 11 feet. A chance of showers. MONDAY NIGHT North to northeast winds 25 to 30 knots. Seas 6 to 9 feet, occasionally to 11 feet. A slight chance of showers. TUESDAY 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. A slight chance of showers. TUESDAY NIGHT Northeast winds near 25 knots. Seas 5 to 8 feet, occasionally to 10 feet. A slight chance of showers. $$