GMZ005-021430-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1020 PM EDT Thu Oct 1 2026
.SYNOPSIS...
High pressure offshore of the Eastern Seaboard will remain in
place through Friday and into the weekend. This feature will
maintain moderate to fresh southeasterly breezes across the
Florida Keys waters through the overnight hours. Breezes are on
track to slacken to moderate tomorrow. Southeasterly winds will
continue to prevail this weekend with widespread moderate breezes
on Saturday and subsiding to gentle to moderate on Sunday. The
winds will remain southeasterly into early next week and generally
remain less than 10 knots and seas 2 feet or less. In addition, a
wet weather pattern will remain across the Keys marine zones
overnight and tomorrow, resulting in periods of scattered to
numerous showers and thunderstorms.
The Approximate Shoreward Edge of the Gulf Stream as of
September 25, 2026...
43 NM south of Dry Tortugas Light, on Loggerhead Key
20 NM south of Cosgrove Shoal Light, off the Marquesas Keys
14 NM south of Sand Key Light, off Key West
7 NM south-southeast of Looe Key, off Big Pine Key
4 NM south-southeast of Sombrero Key Light, off Marathon
4 NM south-southeast of Alligator Reef Light, off Islamorada
0 NM southeast of Molasses Reef Light, off Key Largo
1 NM west-northwest of Carysfort Reef Light, off Ocean Reef
Gulf Stream Information Courtesy of the Naval Oceanographic Office.
$$
GMZ031-021430- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- 1020 PM EDT Thu Oct 1 2026 OVERNIGHT East to southeast winds near 15 knots. Bay waters a moderate chop. A chance of showers and thunderstorms. FRIDAY East to southeast winds 10 to 15 knots. Bay waters a light to moderate chop. A chance of showers and thunderstorms. FRIDAY NIGHT East winds 10 to 15 knots. Bay waters a light to moderate chop. A chance of showers and thunderstorms. SATURDAY East winds 10 to 15 knots. Bay waters a light to moderate chop. A chance of showers and thunderstorms. SATURDAY NIGHT East winds 10 to 15 knots. Bay waters a light to moderate chop. A chance of thunderstorms with a slight chance of showers. SUNDAY East to southeast winds 10 to 15 knots. Bay waters a light to moderate chop. A chance of thunderstorms with a slight chance of showers. SUNDAY NIGHT East winds 5 to 10 knots. Bay waters smooth to a light chop. MONDAY Southeast winds near 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms. MONDAY NIGHT East to southeast winds near 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms. TUESDAY Southeast to south winds near 5 knots. Bay waters smooth. A chance of showers and thunderstorms. TUESDAY NIGHT Southeast winds near 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms. $$
GMZ031-021430- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- 1020 PM EDT Thu Oct 1 2026 OVERNIGHT East to southeast winds near 15 knots. Bay waters a moderate chop. A chance of showers and thunderstorms. FRIDAY East to southeast winds 10 to 15 knots. Bay waters a light to moderate chop. A chance of showers and thunderstorms. FRIDAY NIGHT East winds 10 to 15 knots. Bay waters a light to moderate chop. A chance of showers and thunderstorms. SATURDAY East winds 10 to 15 knots. Bay waters a light to moderate chop. A chance of showers and thunderstorms. SATURDAY NIGHT East winds 10 to 15 knots. Bay waters a light to moderate chop. A chance of thunderstorms with a slight chance of showers. SUNDAY East to southeast winds 10 to 15 knots. Bay waters a light to moderate chop. A chance of thunderstorms with a slight chance of showers. SUNDAY NIGHT East winds 5 to 10 knots. Bay waters smooth to a light chop. MONDAY Southeast winds near 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms. MONDAY NIGHT East to southeast winds near 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms. TUESDAY Southeast to south winds near 5 knots. Bay waters smooth. A chance of showers and thunderstorms. TUESDAY NIGHT Southeast winds near 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms. $$