GMZ005-230830-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1028 PM EDT Wed Apr 22 2026
.SYNOPSIS...High pressure off the Carolina Coast will maintain
moderate to fresh easterly breezes overnight. As the high
continues to slowly migrate into the western North Atlantic,
breezes will continue to slowly slacken as well as shift to the
east to southeast. Weak high pressure maintains control over the
weekend promoting light to gentle east to southeast breezes.
The Approximate Shoreward Edge of the Gulf Stream as of April 22...
19 NM South of Dry Tortugas Light...on Loggerhead Key.
11 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
8 NM South of Sand Key Light...off Key West.
13 NM South of Looe Key...off Big Pine Key.
19 NM Southeast of Sombrero Key Light...off Marathon.
24 NM Southeast of Alligator Reef Light...off Islamorada.
26 NM Southeast of Molasses Reef Light...off Key Largo.
14 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 and RTOFS.
$$
GMZ052>055-072>075-230830- 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- 1028 PM EDT Wed Apr 22 2026 SMALL CRAFT SHOULD EXERCISE CAUTION OVERNIGHT East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at 7 seconds. A slight chance of showers. THURSDAY East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East 5 feet at 7 seconds. A chance of showers with a slight chance of thunderstorms. THURSDAY NIGHT East winds 15 to 20 knots, becoming east to southeast 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms. FRIDAY East to southeast winds 10 to 15 knots, decreasing to near 10 knots. Seas 2 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet. A chance of showers with a slight chance of thunderstorms. FRIDAY NIGHT East to southeast winds near 10 knots. Seas around 2 feet. A slight chance of showers. SATURDAY East winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers. SATURDAY NIGHT East winds 5 to 10 knots. Seas 1 to 2 feet. SUNDAY East to southeast winds 5 to 10 knots. Seas 1 to 2 feet. SUNDAY NIGHT East winds 5 to 10 knots. Seas 1 to 2 feet. SUNDAY NIGHT East winds 5 to 10 knots. Seas 1 to 2 feet. MONDAY East winds 5 to 10 knots. Seas 1 to 2 feet. MONDAY NIGHT East winds near 10 knots. Seas 2 to 3 feet. $$
GMZ052>055-072>075-230830- 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- 1028 PM EDT Wed Apr 22 2026 SMALL CRAFT SHOULD EXERCISE CAUTION OVERNIGHT East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at 7 seconds. A slight chance of showers. THURSDAY East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East 5 feet at 7 seconds. A chance of showers with a slight chance of thunderstorms. THURSDAY NIGHT East winds 15 to 20 knots, becoming east to southeast 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms. FRIDAY East to southeast winds 10 to 15 knots, decreasing to near 10 knots. Seas 2 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet. A chance of showers with a slight chance of thunderstorms. FRIDAY NIGHT East to southeast winds near 10 knots. Seas around 2 feet. A slight chance of showers. SATURDAY East winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers. SATURDAY NIGHT East winds 5 to 10 knots. Seas 1 to 2 feet. SUNDAY East to southeast winds 5 to 10 knots. Seas 1 to 2 feet. SUNDAY NIGHT East winds 5 to 10 knots. Seas 1 to 2 feet. SUNDAY NIGHT East winds 5 to 10 knots. Seas 1 to 2 feet. MONDAY East winds 5 to 10 knots. Seas 1 to 2 feet. MONDAY NIGHT East winds near 10 knots. Seas 2 to 3 feet. $$