GMZ005-290845-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
441 PM EDT Tue Apr 28 2026
.SYNOPSIS...High pressure centered over the Mid-Atlantic will
continue to promote gentle to moderate northeast to east breezes
through tonight. As the high slides into the western North
Atlantic through mid-week, breezes will gradually veer to the east
to southeast. Multiple low pressure systems are expected to
traverse across the eastern U.S. mid to late week. This combined
with weak low pressure across the western North Atlantic will
result in a period of mainly southeast to south breezes.
The Approximate Shoreward Edge of the Gulf Stream as of April 28...
16 NM South of Dry Tortugas Light...on Loggerhead Key.
10 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
9 NM South of Sand Key Light...off Key West.
9 NM South of Looe Key...off Big Pine Key.
12 NM Southeast of Sombrero Key Light...off Marathon.
10 NM Southeast of Alligator Reef Light...off Islamorada.
6 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 and RTOFS.
$$
GMZ052>055-072>075-290845- 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- 441 PM EDT Tue Apr 28 2026 TONIGHT East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 5 seconds. A slight chance of showers. WEDNESDAY East to southeast winds near 10 knots. Seas 2 to 3 feet. Wave Detail: East to southeast 3 feet at 5 seconds. A slight chance of showers. WEDNESDAY NIGHT East to southeast winds near 10 knots. Seas around 2 feet. Wave Detail: East to southeast 2 feet at 5 seconds. THURSDAY Southeast winds 5 to 10 knots. Seas 1 to 2 feet. THURSDAY NIGHT Northeast to east winds 5 to 10 knots, becoming southeast after midnight. Seas 1 to 2 feet. FRIDAY Southeast winds 5 to 10 knots, becoming east to southeast and increasing to near 10 knots. Seas 1 to 2 feet, building to around 2 feet. FRIDAY NIGHT East to southeast winds 10 to 15 knots, becoming southeast to south and increasing to near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. SATURDAY Southeast to south winds near 15 knots, becoming east to southeast and decreasing to near 10 knots. Seas 2 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet. SATURDAY NIGHT East to southeast winds 5 to 10 knots, becoming south and increasing to 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers. SUNDAY Southwest winds near 10 knots, becoming west to northwest in the afternoon. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. SUNDAY NIGHT Northwest winds near 10 knots. Seas 1 to 2 feet. A chance of showers and thunderstorms. $$
GMZ052>055-072>075-290845- 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- 441 PM EDT Tue Apr 28 2026 TONIGHT East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 5 seconds. A slight chance of showers. WEDNESDAY East to southeast winds near 10 knots. Seas 2 to 3 feet. Wave Detail: East to southeast 3 feet at 5 seconds. A slight chance of showers. WEDNESDAY NIGHT East to southeast winds near 10 knots. Seas around 2 feet. Wave Detail: East to southeast 2 feet at 5 seconds. THURSDAY Southeast winds 5 to 10 knots. Seas 1 to 2 feet. THURSDAY NIGHT Northeast to east winds 5 to 10 knots, becoming southeast after midnight. Seas 1 to 2 feet. FRIDAY Southeast winds 5 to 10 knots, becoming east to southeast and increasing to near 10 knots. Seas 1 to 2 feet, building to around 2 feet. FRIDAY NIGHT East to southeast winds 10 to 15 knots, becoming southeast to south and increasing to near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. SATURDAY Southeast to south winds near 15 knots, becoming east to southeast and decreasing to near 10 knots. Seas 2 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet. SATURDAY NIGHT East to southeast winds 5 to 10 knots, becoming south and increasing to 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers. SUNDAY Southwest winds near 10 knots, becoming west to northwest in the afternoon. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. SUNDAY NIGHT Northwest winds near 10 knots. Seas 1 to 2 feet. A chance of showers and thunderstorms. $$