GMZ005-242100-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
448 AM EDT Thu Sep 24 2026
.SYNOPSIS...
Unsettled weather will persist through the end of the week as
deep tropical moisture lingers across the region which will
support scattered showers and thunderstorms, mainly in the Straits
of Florida. Breezes outside of convection will generally remain
light to gentle, variable at times this afternoon, becoming
northerly throughout the day. A frontal boundary is expected to
push southward across the Keys waters on Friday, resulting in
freshening breezes, becoming gentle to moderate in the wake of the
front. Winds should gradually slacken a touch over the weekend but
will remain out of the north. In addition, seas across the eastern
Florida Straits will build at the end of the week and into the
weekend due to an incoming 4 to 5 feet northerly swell following
the frontal passage.
The Approximate Shoreward Edge of the Gulf Stream as of September
15, 2026...
64 NM south-southeast of Dry Tortugas Light, on Loggerhead Key
40 NM south-southeast of Cosgrove Shoal Light, off the Marquesas Keys
36 NM south-southeast of Sand Key Light, off Key West
35 NM southeast of Looe Key, off Big Pine Key
28 NM southeast of Sombrero Key Light, off Marathon
15 NM east-southeast of Alligator Reef Light, off Islamorada
8 NM east-southeast of Molasses Reef Light, off Key Largo
5 NM east-southeast of Carysfort Reef Light, off Ocean Reef
Gulf Stream Information Courtesy of the Naval Oceanographic Office.
$$
GMZ033-034-242100- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 448 AM EDT Thu Sep 24 2026 TODAY North to northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: North to northeast 1 foot at 2 seconds. A slight chance of showers and thunderstorms. TONIGHT North to northeast winds 5 to 10 knots, becoming 10 to 15 knots. Seas around 1 foot, building to 2 to 3. Wave Detail: North 3 feet at 5 seconds. A chance of showers with a slight chance of thunderstorms. FRIDAY North to northeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: North 3 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms. FRIDAY NIGHT Northeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. SATURDAY North to northeast winds near 10 knots, decreasing to 5 to 10 knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet. SATURDAY NIGHT Northeast winds 5 to 10 knots. Seas 1 to 2 feet. SUNDAY Northeast winds 5 to 10 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. SUNDAY NIGHT Northeast to east winds 5 to 10 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. MONDAY East winds near 5 knots. Seas around 1 foot. A chance of showers with a slight chance of thunderstorms. MONDAY NIGHT Southeast winds near 5 knots. Seas 1 foot or less. A chance of showers and thunderstorms. $$
GMZ033-034-242100- 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- 448 AM EDT Thu Sep 24 2026 TODAY North to northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: North to northeast 1 foot at 2 seconds. A slight chance of showers and thunderstorms. TONIGHT North to northeast winds 5 to 10 knots, becoming 10 to 15 knots. Seas around 1 foot, building to 2 to 3. Wave Detail: North 3 feet at 5 seconds. A chance of showers with a slight chance of thunderstorms. FRIDAY North to northeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: North 3 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms. FRIDAY NIGHT Northeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. SATURDAY North to northeast winds near 10 knots, decreasing to 5 to 10 knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet. SATURDAY NIGHT Northeast winds 5 to 10 knots. Seas 1 to 2 feet. SUNDAY Northeast winds 5 to 10 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. SUNDAY NIGHT Northeast to east winds 5 to 10 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. MONDAY East winds near 5 knots. Seas around 1 foot. A chance of showers with a slight chance of thunderstorms. MONDAY NIGHT Southeast winds near 5 knots. Seas 1 foot or less. A chance of showers and thunderstorms. $$