GMZ005-240830-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
430 PM EDT Tue Jun 23 2026
.SYNOPSIS...A broad high pressure system stretching from the Gulf
Basin, eastward to the Florida Peninsula, and into the central
North Atlantic will largely dictate the sensible weather for the
Florida Keys marine zones through the weekend. While maintaining
east to southeast breezes, the high will fluctuate in strength.
Light to gentle breezes will modestly freshen by Thursday, with
gentle to moderate breezes then continuing through the weekend.
The Approximate Shoreward Edge of the Gulf Stream as of June 21,
2026...
32 NM South of Dry Tortugas Light...on Loggerhead Key.
12 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
11 NM South of Sand Key Light...off Key West.
10 NM South of Looe Key...off Big Pine Key.
12 NM Southeast of Sombrero Key Light...off Marathon.
10 NM Southeast of Alligator Reef Light...off Islamorada.
6 NM Southeast of Molasses Reef Light...off Key Largo.
3 NM Southeast of Carysfort Reef Light...off Ocean Reef.
Gulf Stream Information Courtesy of the National Weather Service
in Key West, using data from RTOFS and NASA SPoRT SST.
$$
GMZ033-034-240830- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 430 PM EDT Tue Jun 23 2026 TONIGHT East winds near 5 knots. Seas subsiding to 1 foot or less. Wave Detail: East to southeast 1 foot at 3 seconds. A slight chance of showers and thunderstorms. WEDNESDAY East to southeast winds near 5 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms. WEDNESDAY NIGHT Northeast to east winds near 5 knots, becoming east to southeast and increasing to 5 to 10 knots. Seas building to around 1 foot. A slight chance of showers and thunderstorms. THURSDAY Southeast winds 5 to 10 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. THURSDAY NIGHT East to southeast winds near 10 knots, increasing to 10 to 15 knots. Seas 1 to 2 feet, building to 2 to 3 feet. A slight chance of showers and thunderstorms. FRIDAY East to southeast winds near 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms. FRIDAY NIGHT East to southeast winds near 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms. SATURDAY THROUGH SUNDAY NIGHT East winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. $$
GMZ033-034-240830- 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- 430 PM EDT Tue Jun 23 2026 TONIGHT East winds near 5 knots. Seas subsiding to 1 foot or less. Wave Detail: East to southeast 1 foot at 3 seconds. A slight chance of showers and thunderstorms. WEDNESDAY East to southeast winds near 5 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms. WEDNESDAY NIGHT Northeast to east winds near 5 knots, becoming east to southeast and increasing to 5 to 10 knots. Seas building to around 1 foot. A slight chance of showers and thunderstorms. THURSDAY Southeast winds 5 to 10 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. THURSDAY NIGHT East to southeast winds near 10 knots, increasing to 10 to 15 knots. Seas 1 to 2 feet, building to 2 to 3 feet. A slight chance of showers and thunderstorms. FRIDAY East to southeast winds near 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms. FRIDAY NIGHT East to southeast winds near 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms. SATURDAY THROUGH SUNDAY NIGHT East winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. $$