GMZ005-012030-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
418 AM EDT Wed Oct 1 2025
.SYNOPSIS...Hurricane Imelda will continue to track northeastward,
and will allow for higher pressure to build in its place, and
gentle breezes will gradually slacken into Thursday morning. The
high pressure over the Eastern Seaboard will slowly slide eastward
into the western North Atlantic, and build. This will result in
freshening northeast to east breezes starting Thursday afternoon.
Winds will then clock around towards the southeast for the
upcoming weekend.
The Approximate Shoreward Edge of the Gulf Stream as of September
24...
53 NM South of Dry Tortugas Light...on Loggerhead Key.
37 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
37 NM South of Sand Key Light...off Key West.
28 NM South of Looe Key...off Big Pine Key.
22 NM Southeast of Sombrero Key Light...off Marathon.
18 NM Southeast of Alligator Reef Light...off Islamorada.
15 NM Southeast of Molasses Reef Light...off Key Largo.
6 NM Southeast of Carysfort Reef Light...off Ocean Reef.
Gulf Stream Information Courtesy of the National Weather Service in
Key West based on products from NASA SPoRT.
$$
GMZ052>055-072>075-012030- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 418 AM EDT Wed Oct 1 2025 TODAY Northwest winds near 10 knots, decreasing to 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet, due to northerly swell. Wave Detail: Northwest 2 feet at 5 seconds and northeast 2 feet at 9 seconds. Isolated showers and thunderstorms. TONIGHT Northwest to north winds 5 to 10 knots, becoming north to northeast. Seas 2 to 4 feet, due to northerly swell. Wave Detail: West to northwest 2 feet at 5 seconds and northeast 2 feet at 8 seconds. Isolated showers and thunderstorms. THURSDAY Northeast winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet, due to northerly swell. Wave Detail: Northeast 3 feet at 4 seconds and northeast 2 feet at 8 seconds. Scattered showers and isolated thunderstorms. THURSDAY NIGHT Northeast winds 15 to 20 knots, becoming northeast to east near 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Scattered showers and isolated thunderstorms. FRIDAY Northeast to east winds near 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Scattered showers and isolated thunderstorms. FRIDAY NIGHT Northeast to east winds near 15 knots, becoming east to southeast 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet, subsiding to 3 to 4 feet. Scattered showers and isolated thunderstorms. SATURDAY East to southeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers and isolated thunderstorms. SATURDAY NIGHT East to southeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers and isolated thunderstorms. SUNDAY Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Scattered showers and isolated thunderstorms. SUNDAY NIGHT East to southeast winds near 15 knots. Seas 2 to 4 feet. Scattered showers and isolated thunderstorms. $$
GMZ052>055-072>075-012030- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 418 AM EDT Wed Oct 1 2025 TODAY Northwest winds near 10 knots, decreasing to 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet, due to northerly swell. Wave Detail: Northwest 2 feet at 5 seconds and northeast 2 feet at 9 seconds. Isolated showers and thunderstorms. TONIGHT Northwest to north winds 5 to 10 knots, becoming north to northeast. Seas 2 to 4 feet, due to northerly swell. Wave Detail: West to northwest 2 feet at 5 seconds and northeast 2 feet at 8 seconds. Isolated showers and thunderstorms. THURSDAY Northeast winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet, due to northerly swell. Wave Detail: Northeast 3 feet at 4 seconds and northeast 2 feet at 8 seconds. Scattered showers and isolated thunderstorms. THURSDAY NIGHT Northeast winds 15 to 20 knots, becoming northeast to east near 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Scattered showers and isolated thunderstorms. FRIDAY Northeast to east winds near 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Scattered showers and isolated thunderstorms. FRIDAY NIGHT Northeast to east winds near 15 knots, becoming east to southeast 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet, subsiding to 3 to 4 feet. Scattered showers and isolated thunderstorms. SATURDAY East to southeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers and isolated thunderstorms. SATURDAY NIGHT East to southeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers and isolated thunderstorms. SUNDAY Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Scattered showers and isolated thunderstorms. SUNDAY NIGHT East to southeast winds near 15 knots. Seas 2 to 4 feet. Scattered showers and isolated thunderstorms. $$