Hazardous marine condition(s):
Short Term Forecast
GMZ005-010230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1023 AM EDT Sun May 31 2026
.SYNOPSIS...Weak high pressure across the area will support light
to gentle southwesterly breezes over the next few days, becoming
light and variable at times. Near normal rain and thunder chances
also expected. A weak frontal boundary may stall near the Keys
coastal waters by mid week, supporting an uptick in wind speeds as
well as rain chances.
The Approximate Shoreward Edge of the Gulf Stream as of May 30...
35 NM South of Dry Tortugas Light...on Loggerhead Key.
11 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
10 NM South of Sand Key Light...off Key West.
7 NM South of Looe Key...off Big Pine Key.
7 NM Southeast of Sombrero Key Light...off Marathon.
6 NM Southeast of Alligator Reef Light...off Islamorada.
2 NM Southeast of Molasses Reef Light...off Key Largo.
1 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>075-010230- 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- 1023 AM EDT Sun May 31 2026 THIS AFTERNOON South to southwest winds near 5 knots. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 3 seconds. A slight chance of showers and thunderstorms. TONIGHT South winds near 5 knots, becoming variable at times. Seas 1 foot or less. A slight chance of showers and thunderstorms. MONDAY Variable winds near 5 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms. MONDAY NIGHT Variable winds near 5 knots, becoming north to northeast. Seas 1 foot or less. A slight chance of showers and thunderstorms. TUESDAY North to northeast winds near 5 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms. TUESDAY NIGHT North to northeast winds 5 to 10 knots, becoming northeast to east. Seas around 1 foot. A chance of showers with a slight chance of thunderstorms. WEDNESDAY Northeast to east winds near 5 knots. Seas around 1 foot. A chance of showers and thunderstorms. WEDNESDAY NIGHT Northeast to east winds 5 to 10 knots, increasing to near 10 knots. Seas around 1 foot, building to 1 to 2 feet due to a northeasterly swell. Showers likely with a chance of thunderstorms. THURSDAY Northeast to east winds near 10 knots, increasing to 10 to 15 knots. Seas building to 2 to 3 feet due to a northeasterly swell. Showers likely with a chance of thunderstorms. THURSDAY NIGHT East winds 10 to 15 knots. Seas building to 2 to 4 feet, occasionally to 5 feet due to a northeasterly swell. A chance of showers with a slight chance of thunderstorms. $$
GMZ052>055-072>075-010230- 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- 1023 AM EDT Sun May 31 2026 THIS AFTERNOON South to southwest winds near 5 knots. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 3 seconds. A slight chance of showers and thunderstorms. TONIGHT South winds near 5 knots, becoming variable at times. Seas 1 foot or less. A slight chance of showers and thunderstorms. MONDAY Variable winds near 5 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms. MONDAY NIGHT Variable winds near 5 knots, becoming north to northeast. Seas 1 foot or less. A slight chance of showers and thunderstorms. TUESDAY North to northeast winds near 5 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms. TUESDAY NIGHT North to northeast winds 5 to 10 knots, becoming northeast to east. Seas around 1 foot. A chance of showers with a slight chance of thunderstorms. WEDNESDAY Northeast to east winds near 5 knots. Seas around 1 foot. A chance of showers and thunderstorms. WEDNESDAY NIGHT Northeast to east winds 5 to 10 knots, increasing to near 10 knots. Seas around 1 foot, building to 1 to 2 feet due to a northeasterly swell. Showers likely with a chance of thunderstorms. THURSDAY Northeast to east winds near 10 knots, increasing to 10 to 15 knots. Seas building to 2 to 3 feet due to a northeasterly swell. Showers likely with a chance of thunderstorms. THURSDAY NIGHT East winds 10 to 15 knots. Seas building to 2 to 4 feet, occasionally to 5 feet due to a northeasterly swell. A chance of showers with a slight chance of thunderstorms. $$