GMZ005-240230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1022 AM EDT Sun Aug 23 2026
.SYNOPSIS...
A split ridge pattern remains in place across the Florida Keys
coastal waters. This will promote generally light to gentle
southeast to east breezes through tonight, becoming variable at
times during the afternoon hours. While North Atlantic ridging
builds westward, east to southeast breezes will become more
established from tonight through Thursday, becoming gentle and at
times moderate during the overnight hours.
The Approximate Shoreward Edge of the Gulf Stream as of August
19, 2026...
37 NM south of Dry Tortugas Light, on Loggerhead Key
20 NM south-southeast of Cosgrove Shoal Light, off the Marquesas Keys
14 NM south-southeast of Sand Key Light, off Key West
10 NM south-southeast of Looe Key, off Big Pine Key
10 NM south-southeast of Sombrero Key Light, off Marathon
3 NM southeast of Alligator Reef Light, off Islamorada
1 NM west-northwest of Molasses Reef Light, off Key Largo
1 NM east-southeast of Carysfort Reef Light, off Ocean Reef
Gulf Stream Information Courtesy of the Naval Oceanographic
Office.
$$
GMZ052>055-072>075-240230- Straits of Florida from Ocean Reef to Craig Key out 20 NM- Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out 20 NM- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 1022 AM EDT Sun Aug 23 2026 THIS AFTERNOON East to southeast winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: East to southeast 1 foot at 4 seconds. A slight chance of showers and thunderstorms. TONIGHT East winds 5 to 10 knots, increasing to 10 to 15 knots. Seas 1 to 2 feet, building to around 2 feet. Wave Detail: East to southeast 2 feet at 4 seconds. A slight chance of showers and thunderstorms. MONDAY East to southeast winds near 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 4 seconds. A slight chance of showers and thunderstorms. MONDAY NIGHT East winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. TUESDAY East winds near 10 knots. Seas around 2 feet. A chance of showers with a slight chance of thunderstorms. TUESDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms. WEDNESDAY East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms. WEDNESDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms. THURSDAY East to southeast winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. THURSDAY NIGHT East winds near 10 knots. Seas around 2 feet. A chance of showers and thunderstorms. $$
GMZ052>055-072>075-240230- 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- 1022 AM EDT Sun Aug 23 2026 THIS AFTERNOON East to southeast winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: East to southeast 1 foot at 4 seconds. A slight chance of showers and thunderstorms. TONIGHT East winds 5 to 10 knots, increasing to 10 to 15 knots. Seas 1 to 2 feet, building to around 2 feet. Wave Detail: East to southeast 2 feet at 4 seconds. A slight chance of showers and thunderstorms. MONDAY East to southeast winds near 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 4 seconds. A slight chance of showers and thunderstorms. MONDAY NIGHT East winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. TUESDAY East winds near 10 knots. Seas around 2 feet. A chance of showers with a slight chance of thunderstorms. TUESDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms. WEDNESDAY East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms. WEDNESDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms. THURSDAY East to southeast winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. THURSDAY NIGHT East winds near 10 knots. Seas around 2 feet. A chance of showers and thunderstorms. $$