GMZ005-230230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1022 AM EDT Mon Jun 22 2026
.SYNOPSIS...A broad, weak high pressure stretching from the Gulf
Basin, across the Florida Peninsula, and into the central North
Atlantic will flux 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, 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.
$$
GMZ042>044-230230- Hawk Channel from Ocean Reef to Craig Key out to the reef- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- 1022 AM EDT Mon Jun 22 2026 THIS AFTERNOON East to southeast winds near 10 knots. Seas around 1 foot, building to 1 to 2 feet. Nearshore waters a light chop. A slight chance of showers and thunderstorms. TONIGHT East to southeast winds 10 to 15 knots. Seas 1 to 2 feet, building to around 2 feet. Nearshore waters a light to moderate chop. TUESDAY Southeast winds 10 to 15 knots early, becoming east to southeast 5 to 10 knots. Seas 2 to 3, subsiding to 1 to 2 feet. Nearshore waters a light to moderate chop, becoming smooth to a light chop. TUESDAY NIGHT Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet, subsiding to around 1 foot. Nearshore waters smooth to a light chop. WEDNESDAY East to southeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. WEDNESDAY NIGHT East winds near 10 knots, becoming east to southeast 10 to 15 knots. Seas around 1 foot, building to 1 to 2 feet. Nearshore waters a light chop, becoming a light to moderate chop. A slight chance of showers and thunderstorms. THURSDAY East to southeast winds near 10 knots. Seas around 2 feet. Nearshore waters a light chop. THURSDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. A slight chance of showers and thunderstorms. FRIDAY East to southeast winds near 10 knots. Seas around 2 feet. Nearshore waters a light chop. A slight chance of showers and thunderstorms. FRIDAY NIGHT East to southeast winds near 10 knots. Seas around 2 feet. Nearshore waters a light chop. $$
GMZ042>044-230230- 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- 1022 AM EDT Mon Jun 22 2026 THIS AFTERNOON East to southeast winds near 10 knots. Seas around 1 foot, building to 1 to 2 feet. Nearshore waters a light chop. A slight chance of showers and thunderstorms. TONIGHT East to southeast winds 10 to 15 knots. Seas 1 to 2 feet, building to around 2 feet. Nearshore waters a light to moderate chop. TUESDAY Southeast winds 10 to 15 knots early, becoming east to southeast 5 to 10 knots. Seas 2 to 3, subsiding to 1 to 2 feet. Nearshore waters a light to moderate chop, becoming smooth to a light chop. TUESDAY NIGHT Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet, subsiding to 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. WEDNESDAY NIGHT East winds near 10 knots, becoming east to southeast 10 to 15 knots. Seas around 1 foot, building to 1 to 2 feet. Nearshore waters a light chop, becoming a light to moderate chop. A slight chance of showers and thunderstorms. THURSDAY East to southeast winds near 10 knots. Seas around 2 feet. Nearshore waters a light chop. THURSDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. A slight chance of showers and thunderstorms. FRIDAY East to southeast winds near 10 knots. Seas around 2 feet. Nearshore waters a light chop. A slight chance of showers and thunderstorms. FRIDAY NIGHT East to southeast winds near 10 knots. Seas around 2 feet. Nearshore waters a light chop. $$