GMZ005-120845-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
432 PM EDT Tue Aug 11 2026
.SYNOPSIS...While there are no marine hazard products in place
across the Florida Keys local waters, a Coastal Flood Statement is
in effect for the Lower Keys due to higher water levels around
times of high tide. Anyone on the water should be aware of reduced
clearance underneath fixed bridges over the next few days.
Ridging across Central Florida will shift southwards into Central
and South Florida and weaken over the next couple of days. Gentle
to moderate breezes will trend downwards to a light breeze through
this period, with some directional variability creeping in. Winds
are expected to freshen late in the week as the ridge lifts back
into northern Florida and a broad lower level trough moves
westward across our area. Expect shower and thunderstorm chances
to tick up at that time.
The Approximate Shoreward Edge of the Gulf Stream as of
August 7, 2026...
25 NM South of Dry Tortugas Light...on Loggerhead Key.
15 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
19 NM South of Sand Key Light...off Key West.
29 NM South of Looe Key...off Big Pine Key.
16 NM Southeast of Sombrero Key Light...off Marathon.
4 NM Southeast of Alligator Reef Light...off Islamorada.
2 NM Southeast of Molasses Reef Light...off Key Largo.
1 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.
$$
GMZ033-034-120845- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 432 PM EDT Tue Aug 11 2026 TONIGHT East winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: East 1 foot at 3 seconds. A slight chance of showers and thunderstorms. WEDNESDAY East winds 5 to 10 knots, becoming variable and decreasing to near 5 knots. Seas 1 to 2 feet, subsiding to around 1 foot. Wave Detail: East 1 foot at 3 seconds. A slight chance of showers and thunderstorms. WEDNESDAY NIGHT Northeast winds near 5 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms. THURSDAY Northeast to east winds near 5 knots. Seas 1 foot or less. A chance of showers with a slight chance of thunderstorms. THURSDAY NIGHT Northeast to east winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms. FRIDAY East winds 5 to 10 knots, increasing to near 10 knots. Seas around 1 foot, building to 1 to 2 feet. A chance of showers and thunderstorms. FRIDAY NIGHT East winds 10 to 15 knots. Seas 1 to 2 feet. A chance of showers and thunderstorms. SATURDAY East to southeast winds 10 to 15 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. SATURDAY NIGHT East winds 10 to 15 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. SUNDAY AND SUNDAY NIGHT East to southeast winds 5 to 10 knots. Seas 1 to 2 feet. $$
GMZ033-034-120845- 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- 432 PM EDT Tue Aug 11 2026 TONIGHT East winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: East 1 foot at 3 seconds. A slight chance of showers and thunderstorms. WEDNESDAY East winds 5 to 10 knots, becoming variable and decreasing to near 5 knots. Seas 1 to 2 feet, subsiding to around 1 foot. Wave Detail: East 1 foot at 3 seconds. A slight chance of showers and thunderstorms. WEDNESDAY NIGHT Northeast winds near 5 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms. THURSDAY Northeast to east winds near 5 knots. Seas 1 foot or less. A chance of showers with a slight chance of thunderstorms. THURSDAY NIGHT Northeast to east winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms. FRIDAY East winds 5 to 10 knots, increasing to near 10 knots. Seas around 1 foot, building to 1 to 2 feet. A chance of showers and thunderstorms. FRIDAY NIGHT East winds 10 to 15 knots. Seas 1 to 2 feet. A chance of showers and thunderstorms. SATURDAY East to southeast winds 10 to 15 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. SATURDAY NIGHT East winds 10 to 15 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. SUNDAY AND SUNDAY NIGHT East to southeast winds 5 to 10 knots. Seas 1 to 2 feet. $$