GMZ005-300215-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1014 AM EDT Wed Jul 29 2026
.SYNOPSIS...Troughing combined with the western periphery of an
Atlantic surface ridge will support moderate to fresh southwest
to west breezes across the Keys marine zones, especially over the
adjacent nearshore and offshore waters off the Upper Keys. Breezes
will gradually slacken overnight through Thursday night, as weak
nebulous flow takes over. A col region will set up for late week
into the weekend, resulting in a potential period of variable
breezes.
The Approximate Shoreward Edge of the Gulf Stream as of
July 26, 2026...
40 NM South of Dry Tortugas Light...on Loggerhead Key.
49 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
44 NM South of Sand Key Light...off Key West.
28 NM South of Looe Key...off Big Pine Key.
4 NM South of Sombrero Key Light...off Marathon.
3 NM Southeast of Alligator Reef Light...off Islamorada.
1 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.
$$
GMZ033-034-300215- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 1014 AM EDT Wed Jul 29 2026 THIS AFTERNOON Southwest to west winds 10 to 15 knots. Seas 1 to 2 feet. Wave Detail: West 2 feet at 4 seconds. A slight chance of showers and thunderstorms. TONIGHT Southwest to west winds near 10 knots, decreasing to 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: West 2 feet at 4 seconds. THURSDAY Southwest winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: West to northwest 1 foot at 5 seconds. THURSDAY NIGHT Southwest to west winds near 5 knots. Seas 1 to 2 feet. FRIDAY Variable winds near 5 knots, becoming west. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. FRIDAY NIGHT Northwest to north winds near 5 knots, becoming variable. Seas around 1 foot. A slight chance of showers and thunderstorms. SATURDAY Variable winds near 5 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. SATURDAY NIGHT Northwest to north winds near 5 knots, becoming southeast. Seas around 1 foot. A slight chance of showers and thunderstorms. SUNDAY Southeast to south winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers. SUNDAY NIGHT East to southeast winds 5 to 10 knots, increasing to near 10 knots. Seas 1 to 2 feet, building to around 2 feet. A slight chance of showers and thunderstorms. $$
GMZ033-034-300215- 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- 1014 AM EDT Wed Jul 29 2026 THIS AFTERNOON Southwest to west winds 10 to 15 knots. Seas 1 to 2 feet. Wave Detail: West 2 feet at 4 seconds. A slight chance of showers and thunderstorms. TONIGHT Southwest to west winds near 10 knots, decreasing to 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: West 2 feet at 4 seconds. THURSDAY Southwest winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: West to northwest 1 foot at 5 seconds. THURSDAY NIGHT Southwest to west winds near 5 knots. Seas 1 to 2 feet. FRIDAY Variable winds near 5 knots, becoming west. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. FRIDAY NIGHT Northwest to north winds near 5 knots, becoming variable. Seas around 1 foot. A slight chance of showers and thunderstorms. SATURDAY Variable winds near 5 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. SATURDAY NIGHT Northwest to north winds near 5 knots, becoming southeast. Seas around 1 foot. A slight chance of showers and thunderstorms. SUNDAY Southeast to south winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers. SUNDAY NIGHT East to southeast winds 5 to 10 knots, increasing to near 10 knots. Seas 1 to 2 feet, building to around 2 feet. A slight chance of showers and thunderstorms. $$