GMZ005-010230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1029 AM EDT Mon Aug 31 2026
.SYNOPSIS...
The western periphery of an Atlantic high remains in control of
the Keys for the next several days. Therefore, expect continued
peaking and lulling breezes. The direction will also shift over
the next few days with east to southeasterly breezes overnight
and in the morning with northeast to east breezes late afternoon
and evening. In addition, the overall flow will 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.
$$
GMZ031-010230- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- 1029 AM EDT Mon Aug 31 2026 TODAY East to southeast winds 5 to 10 knots, decreasing to near 5 knots. Bay waters smooth to a light chop, becoming smooth. A chance of showers and thunderstorms. TONIGHT Northeast to east winds near 5 knots, becoming east and increasing to 5 to 10 knots. Bay waters smooth, becoming smooth to a light chop. A chance of showers and thunderstorms. TUESDAY East to southeast winds near 5 knots. Bay waters smooth. A chance of showers and thunderstorms. TUESDAY NIGHT Northeast to east winds near 5 knots, becoming east to southeast and increasing to 5 to 10 knots. Bay waters smooth, becoming smooth to a light chop. A chance of showers and thunderstorms. WEDNESDAY East to southeast winds near 5 knots. Bay waters smooth. Showers likely with a chance of thunderstorms. WEDNESDAY NIGHT East winds 5 to 10 knots, becoming east to southeast and increasing to near 10 knots. Bay waters smooth to a light chop, becoming a light chop. Showers likely with a chance of thunderstorms. THURSDAY East to southeast winds near 10 knots, increasing to 10 to 15 knots. Bay waters a light chop, becoming a light to moderate chop. Showers likely with a chance of thunderstorms. THURSDAY NIGHT East to southeast winds 10 to 15 knots. Bay waters a light to moderate chop. Showers and thunderstorms likely. FRIDAY Southeast winds 5 to 10 knots. Bay waters smooth to a light chop. A chance of showers and thunderstorms. FRIDAY NIGHT East to southeast winds 5 to 10 knots. Bay waters smooth to a light chop. A chance of showers and thunderstorms. $$
GMZ031-010230- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- 1029 AM EDT Mon Aug 31 2026 TODAY East to southeast winds 5 to 10 knots, decreasing to near 5 knots. Bay waters smooth to a light chop, becoming smooth. A chance of showers and thunderstorms. TONIGHT Northeast to east winds near 5 knots, becoming east and increasing to 5 to 10 knots. Bay waters smooth, becoming smooth to a light chop. A chance of showers and thunderstorms. TUESDAY East to southeast winds near 5 knots. Bay waters smooth. A chance of showers and thunderstorms. TUESDAY NIGHT Northeast to east winds near 5 knots, becoming east to southeast and increasing to 5 to 10 knots. Bay waters smooth, becoming smooth to a light chop. A chance of showers and thunderstorms. WEDNESDAY East to southeast winds near 5 knots. Bay waters smooth. Showers likely with a chance of thunderstorms. WEDNESDAY NIGHT East winds 5 to 10 knots, becoming east to southeast and increasing to near 10 knots. Bay waters smooth to a light chop, becoming a light chop. Showers likely with a chance of thunderstorms. THURSDAY East to southeast winds near 10 knots, increasing to 10 to 15 knots. Bay waters a light chop, becoming a light to moderate chop. Showers likely with a chance of thunderstorms. THURSDAY NIGHT East to southeast winds 10 to 15 knots. Bay waters a light to moderate chop. Showers and thunderstorms likely. FRIDAY Southeast winds 5 to 10 knots. Bay waters smooth to a light chop. A chance of showers and thunderstorms. FRIDAY NIGHT East to southeast winds 5 to 10 knots. Bay waters smooth to a light chop. A chance of showers and thunderstorms. $$