Hazardous marine condition(s):
Short Term Forecast
GMZ005-202030-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
428 AM EDT Wed May 20 2026
.SYNOPSIS...Surface high pressure centered north of Bermuda will
continue to support gentle to moderate breezes across the Florida
Keys waters. Breezes are on track to slowly decrease during the
week with peaks expected during the evenings and lulls during the
day. Rain and thunder chances will remain above normal through
much of the week.
The Approximate Shoreward Edge of the Gulf Stream as of May 12...
35 NM South of Dry Tortugas Light...on Loggerhead Key.
9 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
6 NM South of Sand Key Light...off Key West.
7 NM South of Looe Key...off Big Pine Key.
6 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.
3 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.
$$
GMZ033-034-202030- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 428 AM EDT Wed May 20 2026 TODAY East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 4 seconds. A chance of showers with a slight chance of thunderstorms. TONIGHT East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 4 seconds. A chance of showers with a slight chance of thunderstorms. THURSDAY East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 4 seconds. A slight chance of showers and thunderstorms. THURSDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. FRIDAY East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. FRIDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. SATURDAY East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. SATURDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. SUNDAY East to southeast winds near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. A slight chance of showers and thunderstorms. SUNDAY NIGHT East winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. A chance of showers and thunderstorms. $$
GMZ033-034-202030- 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- 428 AM EDT Wed May 20 2026 TODAY East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 4 seconds. A chance of showers with a slight chance of thunderstorms. TONIGHT East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 4 seconds. A chance of showers with a slight chance of thunderstorms. THURSDAY East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 4 seconds. A slight chance of showers and thunderstorms. THURSDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. FRIDAY East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. FRIDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. SATURDAY East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. SATURDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. SUNDAY East to southeast winds near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. A slight chance of showers and thunderstorms. SUNDAY NIGHT East winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. A chance of showers and thunderstorms. $$