Hazardous marine condition(s):
Small Craft Advisory
GMZ005-250230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1025 AM EDT Sat Oct 24 2026
.SYNOPSIS...
A Small Craft Advisory is in effect for all Florida Keys marine
zones. Persistent high pressure over the eastern United States
will help sustain fresh to strong breezes over the next couple of
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
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.
$$
GMZ031-250230- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- 1025 AM EDT Sat Oct 24 2026 SMALL CRAFT ADVISORY IN EFFECT THIS AFTERNOON Northeast winds 15 to 20 knots, increasing to near 20 knots. Bay waters choppy, becoming rough. A slight chance of showers. TONIGHT North to northeast winds near 20 knots, becoming north and decreasing to 15 to 20 knots. Bay waters rough, becoming choppy. SUNDAY North to northeast winds 15 to 20 knots, becoming northeast and increasing to near 20 knots. Bay waters choppy, becoming rough. A chance of showers with a slight chance of thunderstorms. SUNDAY NIGHT Northeast winds near 20 knots, becoming north to northeast and decreasing to 15 to 20 knots. Bay waters rough, becoming choppy. A chance of showers with a slight chance of thunderstorms. MONDAY North to northeast winds 15 to 20 knots, becoming northeast and increasing to near 20 knots. Bay waters choppy, becoming rough. Showers likely with a slight chance of thunderstorms. MONDAY NIGHT Northeast winds near 20 knots, becoming north to northeast and decreasing to 15 to 20 knots. Bay waters rough, becoming choppy. A chance of showers with a slight chance of thunderstorms. TUESDAY North to northeast winds 15 to 20 knots, increasing to near 20 knots. Bay waters choppy, becoming rough. A chance of showers with a slight chance of thunderstorms. TUESDAY NIGHT Northeast winds 20 to 25 knots, decreasing to 15 to 20 knots after midnight. Bay waters very rough, becoming choppy. A slight chance of showers and thunderstorms. WEDNESDAY Northeast winds 15 to 20 knots, increasing to 20 to 25 knots in the afternoon. Bay waters choppy, becoming very rough. A chance of showers. WEDNESDAY NIGHT Northeast winds 20 to 25 knots, decreasing to near 15 knots after midnight. Bay waters very rough, becoming a moderate chop. A slight chance of showers. $$
GMZ031-250230- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- 1025 AM EDT Sat Oct 24 2026 SMALL CRAFT ADVISORY IN EFFECT THIS AFTERNOON Northeast winds 15 to 20 knots, increasing to near 20 knots. Bay waters choppy, becoming rough. A slight chance of showers. TONIGHT North to northeast winds near 20 knots, becoming north and decreasing to 15 to 20 knots. Bay waters rough, becoming choppy. SUNDAY North to northeast winds 15 to 20 knots, becoming northeast and increasing to near 20 knots. Bay waters choppy, becoming rough. A chance of showers with a slight chance of thunderstorms. SUNDAY NIGHT Northeast winds near 20 knots, becoming north to northeast and decreasing to 15 to 20 knots. Bay waters rough, becoming choppy. A chance of showers with a slight chance of thunderstorms. MONDAY North to northeast winds 15 to 20 knots, becoming northeast and increasing to near 20 knots. Bay waters choppy, becoming rough. Showers likely with a slight chance of thunderstorms. MONDAY NIGHT Northeast winds near 20 knots, becoming north to northeast and decreasing to 15 to 20 knots. Bay waters rough, becoming choppy. A chance of showers with a slight chance of thunderstorms. TUESDAY North to northeast winds 15 to 20 knots, increasing to near 20 knots. Bay waters choppy, becoming rough. A chance of showers with a slight chance of thunderstorms. TUESDAY NIGHT Northeast winds 20 to 25 knots, decreasing to 15 to 20 knots after midnight. Bay waters very rough, becoming choppy. A slight chance of showers and thunderstorms. WEDNESDAY Northeast winds 15 to 20 knots, increasing to 20 to 25 knots in the afternoon. Bay waters choppy, becoming very rough. A chance of showers. WEDNESDAY NIGHT Northeast winds 20 to 25 knots, decreasing to near 15 knots after midnight. Bay waters very rough, becoming a moderate chop. A slight chance of showers. $$