Hazardous marine condition(s):
Short Term Forecast
GMZ005-032030-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
430 AM EDT Wed Sep 3 2025
.SYNOPSIS...A broad surface low along a stationary front
stretching from the Gulf eastward to the Florida Peninsula will
maintain west to northwest winds across the Keys marine zones
tonight. The front will remain rooted in place through the next
few days, while the low meanders northeast into the western North
Atlantic promoting southwest to west breezes throughout the week.
Abundant moisture will promote above normal rain and thunder
chances through the end of the work week.
The Approximate Shoreward Edge of the Gulf Stream as of September 1...
41 NM South of Dry Tortugas Light...on Loggerhead Key.
30 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
9 NM South of Sand Key Light...off Key West.
8 NM South of Looe Key...off Big Pine Key.
7 NM Southeast of Sombrero Key Light...off Marathon.
6 NM Southeast of Alligator Reef Light...off Islamorada.
4 NM Southeast of Molasses Reef Light...off Key Largo.
4 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.
$$
GMZ052>055-072>075-032030- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 430 AM EDT Wed Sep 3 2025 TODAY West winds 10 to 15 knots. Seas around 2 feet. Wave Detail: West 2 feet at 4 seconds. Winds and seas higher in and around widespread showers and scattered thunderstorms. TONIGHT Southwest to west winds 10 to 15 knots. Seas around 2 feet. Wave Detail: West 2 feet at 4 seconds. Numerous showers and scattered thunderstorms. THURSDAY Southwest to west winds near 15 knots. Seas 2 to 3 feet. Wave Detail: Southwest to west 2 feet at 4 seconds. Widespread showers and scattered thunderstorms. THURSDAY NIGHT Southwest winds 10 to 15 knots. Seas around 2 feet. Numerous showers and scattered thunderstorms. FRIDAY Southwest winds 10 to 15 knots. Seas 1 to 2 feet. Numerous showers and scattered thunderstorms. FRIDAY NIGHT South to southwest winds near 10 knots, decreasing to 5 to 10 knots. Seas 1 to 2 feet. Scattered showers and thunderstorms. SATURDAY Southwest winds 5 to 10 knots. Seas around 1 foot. Scattered showers and thunderstorms. SATURDAY NIGHT Variable winds near 5 knots, becoming east to southeast after midnight. Seas around 1 foot. Scattered showers and thunderstorms. SUNDAY East winds near 5 knots. Seas 1 to 2 feet. Scattered showers and thunderstorms. SUNDAY NIGHT East winds 5 to 10 knots. Seas 1 to 2 feet. Scattered showers and thunderstorms. $$
GMZ052>055-072>075-032030- 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- 430 AM EDT Wed Sep 3 2025 TODAY West winds 10 to 15 knots. Seas around 2 feet. Wave Detail: West 2 feet at 4 seconds. Winds and seas higher in and around widespread showers and scattered thunderstorms. TONIGHT Southwest to west winds 10 to 15 knots. Seas around 2 feet. Wave Detail: West 2 feet at 4 seconds. Numerous showers and scattered thunderstorms. THURSDAY Southwest to west winds near 15 knots. Seas 2 to 3 feet. Wave Detail: Southwest to west 2 feet at 4 seconds. Widespread showers and scattered thunderstorms. THURSDAY NIGHT Southwest winds 10 to 15 knots. Seas around 2 feet. Numerous showers and scattered thunderstorms. FRIDAY Southwest winds 10 to 15 knots. Seas 1 to 2 feet. Numerous showers and scattered thunderstorms. FRIDAY NIGHT South to southwest winds near 10 knots, decreasing to 5 to 10 knots. Seas 1 to 2 feet. Scattered showers and thunderstorms. SATURDAY Southwest winds 5 to 10 knots. Seas around 1 foot. Scattered showers and thunderstorms. SATURDAY NIGHT Variable winds near 5 knots, becoming east to southeast after midnight. Seas around 1 foot. Scattered showers and thunderstorms. SUNDAY East winds near 5 knots. Seas 1 to 2 feet. Scattered showers and thunderstorms. SUNDAY NIGHT East winds 5 to 10 knots. Seas 1 to 2 feet. Scattered showers and thunderstorms. $$