GMZ005-260830-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
425 PM EDT Tue Aug 25 2026
.SYNOPSIS...The western periphery of an Atlantic high is expected
to maintain control of the Keys for the next several days. This
will promote peaking and lulling east to southeast breezes. Breezes
will peak in the evening through early morning and lull in the
afternoons. The strongest surge of breezes is anticipated to be
Wednesday night where mostly moderate breezes are expected
throughout the Florida Keys coastal waters.
The Approximate Shoreward Edge of the Gulf Stream as of August
19, 2026...
37 NM south of Dry Tortugas Light, on Loggerhead Key
20 NM south-southeast of Cosgrove Shoal Light, off the Marquesas Keys
14 NM south-southeast of Sand Key Light, off Key West
10 NM south-southeast of Looe Key, off Big Pine Key
10 NM south-southeast of Sombrero Key Light, off Marathon
3 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.
$$
GMZ032-035-260830- Bayside and Gulfside from Craig Key to west end of Seven Mile Bridge- Gulf of America from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- 425 PM EDT Tue Aug 25 2026 TONIGHT East to southeast winds near 10 knots. Seas around 1 foot, except 1 to 2 feet west of the Marquesas Keys. Nearshore waters a light chop. A chance of showers and thunderstorms. WEDNESDAY East to southeast winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Showers likely with a chance of thunderstorms. WEDNESDAY NIGHT East to southeast winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. A chance of showers and thunderstorms. THURSDAY Southeast winds near 10 knots, becoming east to southeast and decreasing to 5 to 10 knots. Seas 1 to 2 feet, subsiding to around 1 foot. Nearshore waters a light chop, becoming smooth to a light chop. Showers likely with a chance of thunderstorms. THURSDAY NIGHT East to southeast winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. A chance of showers and thunderstorms. FRIDAY East to southeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. A chance of showers and thunderstorms. FRIDAY NIGHT East winds near 10 knots. Seas 1 around 1 foot. Nearshore waters a light chop. A chance of showers and thunderstorms. SATURDAY East winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. A chance of showers and thunderstorms. SATURDAY NIGHT East winds 10 to 15 knots. Seas around 1 foot. Nearshore waters a light to moderate chop. Showers likely with a chance of thunderstorms. SUNDAY East to southeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. A chance of showers and thunderstorms. SUNDAY NIGHT East winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. A chance of showers and thunderstorms. $$
GMZ032-035-260830- Bayside and Gulfside from Craig Key to west end of Seven Mile Bridge- Gulf of America from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- 425 PM EDT Tue Aug 25 2026 TONIGHT East to southeast winds near 10 knots. Seas around 1 foot, except 1 to 2 feet west of the Marquesas Keys. Nearshore waters a light chop. A chance of showers and thunderstorms. WEDNESDAY East to southeast winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Showers likely with a chance of thunderstorms. WEDNESDAY NIGHT East to southeast winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. A chance of showers and thunderstorms. THURSDAY Southeast winds near 10 knots, becoming east to southeast and decreasing to 5 to 10 knots. Seas 1 to 2 feet, subsiding to around 1 foot. Nearshore waters a light chop, becoming smooth to a light chop. Showers likely with a chance of thunderstorms. THURSDAY NIGHT East to southeast winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. A chance of showers and thunderstorms. FRIDAY East to southeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. A chance of showers and thunderstorms. FRIDAY NIGHT East winds near 10 knots. Seas 1 around 1 foot. Nearshore waters a light chop. A chance of showers and thunderstorms. SATURDAY East winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. A chance of showers and thunderstorms. SATURDAY NIGHT East winds 10 to 15 knots. Seas around 1 foot. Nearshore waters a light to moderate chop. Showers likely with a chance of thunderstorms. SUNDAY East to southeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. A chance of showers and thunderstorms. SUNDAY NIGHT East winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. A chance of showers and thunderstorms. $$