Hazardous marine condition(s):
Short Term Forecast
GMZ005-281430-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1019 PM EDT Sat Jun 27 2026
.SYNOPSIS...A broad high pressure system centered over the North
Atlantic will continue to extend westward to the Florida Peninsula
through early next week. This will support bouts of light to
gentle breezes that may freshen to gentle to moderate at times,
mainly in the overnight hours. Starting late Monday, a frontal
boundary will press south across the Florida Peninsula and stall
across central Florida. This will act to weaken the high and
allow for slackening breezes through Wednesday. Thereafter, a
broad area of low pressure may develop along the residual stalled
frontal boundary and move westward across Florida. This could
potentially freshen breezes once again.
The Approximate Shoreward Edge of the Gulf Stream as of June 21,
2026...
32 NM South of Dry Tortugas Light...on Loggerhead Key.
12 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
11 NM South of Sand Key Light...off Key West.
10 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.
3 NM Southeast of Carysfort Reef Light...off Ocean Reef.
Gulf Stream Information Courtesy of the National Weather Service
in Key West, using data from RTOFS and NASA SPoRT SST.
$$
GMZ052>055-072>075-281430- 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- 1019 PM EDT Sat Jun 27 2026 OVERNIGHT East to southeast winds near 10 knots, increasing to 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 5 seconds. A chance of showers and thunderstorms. SUNDAY East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East to southeast 3 feet at 5 seconds. A slight chance of showers and thunderstorms. SUNDAY NIGHT East to southeast winds 10 to 15 knots, increasing to near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 5 seconds. A slight chance of showers and thunderstorms. MONDAY East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms. MONDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. TUESDAY East to southeast winds near 10 knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet. A slight chance of showers and thunderstorms. TUESDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. WEDNESDAY East to southeast winds near 10 knots. Seas around 2 feet. WEDNESDAY NIGHT East to southeast winds 10 to 15 knots. Seas building to 2 to 4 feet, occasionally to 5 feet. A chance of thunderstorms with a slight chance of showers. THURSDAY East to southeast winds near 10 knots. Seas 2 to 3 feet. A slight chance of showers. THURSDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. A slight chance of showers and thunderstorms. $$
GMZ052>055-072>075-281430- 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- 1019 PM EDT Sat Jun 27 2026 OVERNIGHT East to southeast winds near 10 knots, increasing to 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 5 seconds. A chance of showers and thunderstorms. SUNDAY East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East to southeast 3 feet at 5 seconds. A slight chance of showers and thunderstorms. SUNDAY NIGHT East to southeast winds 10 to 15 knots, increasing to near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 5 seconds. A slight chance of showers and thunderstorms. MONDAY East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms. MONDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. TUESDAY East to southeast winds near 10 knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet. A slight chance of showers and thunderstorms. TUESDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. WEDNESDAY East to southeast winds near 10 knots. Seas around 2 feet. WEDNESDAY NIGHT East to southeast winds 10 to 15 knots. Seas building to 2 to 4 feet, occasionally to 5 feet. A chance of thunderstorms with a slight chance of showers. THURSDAY East to southeast winds near 10 knots. Seas 2 to 3 feet. A slight chance of showers. THURSDAY NIGHT East to southeast winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. A slight chance of showers and thunderstorms. $$