GMZ005-290830-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
416 PM EDT Fri Aug 28 2026
.SYNOPSIS...The western periphery of an Atlantic high is expected
to maintain control of the Keys for the next several days. This
will continue to promote peaking and lulling east to southeast
breezes. Breezes will peak in the evening through early morning
hours and lull in the afternoons. In addition, the southeasterly
flow will also keep deep moisture in place across the region with
daily chances of showers and thunderstorms. Locally hazardous
winds and seas are expected in the vicinity of thunderstorm
activity.
The Approximate Shoreward Edge of the Gulf Stream as of August 26,
2026...
32 NM south of Dry Tortugas Light, on Loggerhead Key
9 NM south-southeast of Cosgrove Shoal Light, off the Marquesas Keys
7 NM south-southeast of Sand Key Light, off Key West
6 NM south-southeast of Looe Key, off Big Pine Key
7 NM south-southeast of Sombrero Key Light, off Marathon
4 NM southeast of Alligator Reef Light, off Islamorada
1 NM west-northwest of Molasses Reef Light, off Key Largo
1 NM east-southeast of Carysfort Reef Light, off Ocean Reef
Gulf Stream Information Courtesy of the Naval Oceanographic
Office.
$$
GMZ033-034-290830- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 416 PM EDT Fri Aug 28 2026 TONIGHT East winds 5 to 10 knots, increasing to near 10 knots. Seas around 1 foot. Wave Detail: East 1 foot at 3 seconds. A chance of showers and thunderstorms. SATURDAY East winds near 10 knots, decreasing to 5 to 10 knots. Seas around 1 foot. Wave Detail: East 1 foot at 3 seconds. A chance of showers and thunderstorms. SATURDAY NIGHT East winds 5 to 10 knots, becoming east to southeast and increasing to 10 to 15 knots. Seas around 1 foot, building to 1 to 2 feet. Wave Detail: East to southeast 2 feet at 3 seconds. A chance of showers and thunderstorms. SUNDAY East to southeast winds near 10 knots. Seas 1 to 2 feet. Showers likely with a chance of thunderstorms. SUNDAY NIGHT East winds 10 to 15 knots. Seas around 2 feet. A chance of showers and thunderstorms. MONDAY East to southeast winds near 10 knots, becoming northeast to east and decreasing to 5 to 10 knots. Seas 1 to 2 feet. Showers likely with a chance of thunderstorms. MONDAY NIGHT East winds near 10 knots. Seas around 1 foot. A chance of showers and thunderstorms. TUESDAY East winds 5 to 10 knots. Seas around 1 foot. A chance of showers and thunderstorms. TUESDAY NIGHT East winds near 10 knots. Seas around 1 foot. Showers likely with a chance of thunderstorms. WEDNESDAY East winds 5 to 10 knots. Seas around 1 foot. Showers and thunderstorms likely. WEDNESDAY NIGHT East winds 5 to 10 knots. Seas around 2 feet. Showers and thunderstorms likely. $$
GMZ033-034-290830- 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- 416 PM EDT Fri Aug 28 2026 TONIGHT East winds 5 to 10 knots, increasing to near 10 knots. Seas around 1 foot. Wave Detail: East 1 foot at 3 seconds. A chance of showers and thunderstorms. SATURDAY East winds near 10 knots, decreasing to 5 to 10 knots. Seas around 1 foot. Wave Detail: East 1 foot at 3 seconds. A chance of showers and thunderstorms. SATURDAY NIGHT East winds 5 to 10 knots, becoming east to southeast and increasing to 10 to 15 knots. Seas around 1 foot, building to 1 to 2 feet. Wave Detail: East to southeast 2 feet at 3 seconds. A chance of showers and thunderstorms. SUNDAY East to southeast winds near 10 knots. Seas 1 to 2 feet. Showers likely with a chance of thunderstorms. SUNDAY NIGHT East winds 10 to 15 knots. Seas around 2 feet. A chance of showers and thunderstorms. MONDAY East to southeast winds near 10 knots, becoming northeast to east and decreasing to 5 to 10 knots. Seas 1 to 2 feet. Showers likely with a chance of thunderstorms. MONDAY NIGHT East winds near 10 knots. Seas around 1 foot. A chance of showers and thunderstorms. TUESDAY East winds 5 to 10 knots. Seas around 1 foot. A chance of showers and thunderstorms. TUESDAY NIGHT East winds near 10 knots. Seas around 1 foot. Showers likely with a chance of thunderstorms. WEDNESDAY East winds 5 to 10 knots. Seas around 1 foot. Showers and thunderstorms likely. WEDNESDAY NIGHT East winds 5 to 10 knots. Seas around 2 feet. Showers and thunderstorms likely. $$