GMZ005-232030-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
418 AM EDT Tue Jun 23 2026
.SYNOPSIS...A broad, weak high pressure system stretching from
the Gulf Basin, across the Florida Peninsula, and into the central
North Atlantic will fluctuate in strength over the next several
days. As a result, expect both wind speeds and direction to be
primarily mesoscale driven and at times chaotic. By Wednesday
night, the high will begin to gradually build and allow for a
slow freshening of east to southeast breezes.
The Approximate Shoreward Edge of the Gulf Stream as of June 21,
2026...
32 NM South of Dry Tortugas Light...on Loggerhead Key.
12 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
11 NM South of Sand Key Light...off Key West.
10 NM South of Looe Key...off Big Pine Key.
12 NM Southeast of Sombrero Key Light...off Marathon.
10 NM Southeast of Alligator Reef Light...off Islamorada.
6 NM Southeast of Molasses Reef Light...off Key Largo.
3 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.
$$
GMZ042>044-232030- Hawk Channel from Ocean Reef to Craig Key out to the reef- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- 418 AM EDT Tue Jun 23 2026 TODAY East to southeast winds near 10 knots, decreasing to 5 to 10 knots. Seas around 2 feet, subsiding to 1 to 2 feet. Nearshore waters a light chop, becoming smooth to a light chop. A slight chance of showers and thunderstorms this morning. TONIGHT East to southeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. WEDNESDAY East to southeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. A slight chance of showers and thunderstorms. WEDNESDAY NIGHT East to southeast winds 5 to 10 knots, increasing to near 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop, becoming a light chop. A slight chance of showers and thunderstorms. THURSDAY Southeast winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. A slight chance of showers and thunderstorms. THURSDAY NIGHT East to southeast winds 10 to 15 knots. Seas building to 2 to 3 feet. Nearshore waters a light to moderate chop. A slight chance of showers and thunderstorms. FRIDAY East to southeast winds 10 to 15 knots. Seas around 2 feet. Nearshore waters a light to moderate chop. A slight chance of showers and thunderstorms. FRIDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. SATURDAY East winds near 10 knots. Seas around 2 feet. Nearshore waters a light chop. A slight chance of showers. SATURDAY NIGHT East winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. A slight chance of showers and thunderstorms. $$
GMZ042>044-232030- Hawk Channel from Ocean Reef to Craig Key out to the reef- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- 418 AM EDT Tue Jun 23 2026 TODAY East to southeast winds near 10 knots, decreasing to 5 to 10 knots. Seas around 2 feet, subsiding to 1 to 2 feet. Nearshore waters a light chop, becoming smooth to a light chop. A slight chance of showers and thunderstorms this morning. TONIGHT East to southeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. WEDNESDAY East to southeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. A slight chance of showers and thunderstorms. WEDNESDAY NIGHT East to southeast winds 5 to 10 knots, increasing to near 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop, becoming a light chop. A slight chance of showers and thunderstorms. THURSDAY Southeast winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. A slight chance of showers and thunderstorms. THURSDAY NIGHT East to southeast winds 10 to 15 knots. Seas building to 2 to 3 feet. Nearshore waters a light to moderate chop. A slight chance of showers and thunderstorms. FRIDAY East to southeast winds 10 to 15 knots. Seas around 2 feet. Nearshore waters a light to moderate chop. A slight chance of showers and thunderstorms. FRIDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. SATURDAY East winds near 10 knots. Seas around 2 feet. Nearshore waters a light chop. A slight chance of showers. SATURDAY NIGHT East winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. A slight chance of showers and thunderstorms. $$