GMZ005-202100-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
450 AM EDT Mon Jul 20 2026
.SYNOPSIS...At 5:00 a.m. EDT, Tropical Depression Two was
centered over the northeastern Gulf of America, and is expected
to move slowly northwestward during the next day or two, followed
by a turn toward the west. On the forecast track, the depression
will move near or along the northern Gulf coast during the next
several days. An Atlantic ridge of high pressure will extend to
the Florida Peninsula for the next several days. Moderate to fresh
breezes this morning, especially across the SE Gulf will slacken
to gentle to moderate this afternoon. Thereafter, breezes will
continue to peak overnight and lull during the day through
Thursday.
The Approximate Shoreward Edge of the Gulf Stream as of July 17,
2026...
49 NM South of Dry Tortugas Light...on Loggerhead Key.
51 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
38 NM South of Sand Key Light...off Key West.
22 NM South of Looe Key...off Big Pine Key.
13 NM South of Sombrero Key Light...off Marathon.
6 NM Southeast of Alligator Reef Light...off Islamorada.
2 NM Southeast of Molasses Reef Light...off Key Largo.
1 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.
$$
GMZ033-034-202100- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 450 AM EDT Mon Jul 20 2026 SMALL CRAFT SHOULD EXERCISE CAUTION UNTIL WINDS DECREASE TODAY South to southwest winds 15 to 20 knots, decreasing to 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southwest 3 feet at 5 seconds. A slight chance of showers and thunderstorms. TONIGHT South to southwest winds 10 to 15 knots, becoming southeast to south and increasing to near 15 knots. Seas 2 to 3 feet. Wave Detail: South to southwest 3 feet at 4 seconds. A slight chance of showers and thunderstorms. TUESDAY Southeast to south winds near 15 knots, decreasing to near 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 4 seconds and west 2 feet at 6 seconds. A slight chance of showers and thunderstorms. TUESDAY NIGHT Southeast winds 5 to 10 knots, increasing to 10 to 15 knots after midnight. Seas around 2 feet. WEDNESDAY Southeast winds near 10 knots, becoming east to southeast and decreasing to 5 to 10 knots. Seas around 2 feet. WEDNESDAY NIGHT East to southeast winds 5 to 10 knots, increasing to near 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms. THURSDAY East winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. THURSDAY NIGHT East winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms. FRIDAY East winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. FRIDAY NIGHT East to southeast winds 5 to 10 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. $$
GMZ033-034-202100- 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- 450 AM EDT Mon Jul 20 2026 SMALL CRAFT SHOULD EXERCISE CAUTION UNTIL WINDS DECREASE TODAY South to southwest winds 15 to 20 knots, decreasing to 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southwest 3 feet at 5 seconds. A slight chance of showers and thunderstorms. TONIGHT South to southwest winds 10 to 15 knots, becoming southeast to south and increasing to near 15 knots. Seas 2 to 3 feet. Wave Detail: South to southwest 3 feet at 4 seconds. A slight chance of showers and thunderstorms. TUESDAY Southeast to south winds near 15 knots, decreasing to near 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 4 seconds and west 2 feet at 6 seconds. A slight chance of showers and thunderstorms. TUESDAY NIGHT Southeast winds 5 to 10 knots, increasing to 10 to 15 knots after midnight. Seas around 2 feet. WEDNESDAY Southeast winds near 10 knots, becoming east to southeast and decreasing to 5 to 10 knots. Seas around 2 feet. WEDNESDAY NIGHT East to southeast winds 5 to 10 knots, increasing to near 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms. THURSDAY East winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. THURSDAY NIGHT East winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms. FRIDAY East winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. FRIDAY NIGHT East to southeast winds 5 to 10 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. $$