Hazardous marine condition(s):
Small Craft Advisory
GMZ005-050215-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1011 AM EDT Sat Apr 4 2026
.SYNOPSIS...A broad Atlantic high will begin to weaken and move
eastward during the first half of this weekend. There is high
confidence that moderate to fresh easterly breezes will slacken
on Sunday. Light to gentle breezes early next week will freshen
once again by Wednesday in response to a strong second area of
high over the eastern United States. A chance of showers will
return to the forecast by Monday night, and thunderstorms are
possible after the start of the work week.
The Approximate Shoreward Edge of the Gulf Stream as of March 28...
26 NM South of Dry Tortugas Light...on Loggerhead Key.
38 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
36 NM South of Sand Key Light...off Key West.
24 NM South of Looe Key...off Big Pine Key.
20 NM Southeast of Sombrero Key Light...off Marathon.
15 NM Southeast of Alligator Reef Light...off Islamorada.
7 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.
$$
GMZ052>055-072>075-050215- 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- 1011 AM EDT Sat Apr 4 2026 SMALL CRAFT ADVISORY IN EFFECT THIS AFTERNOON East winds near 20 knots. Seas 4 to 7 feet, occasionally to 9 feet. Wave Detail: East 7 feet at 7 seconds. A slight chance of showers. TONIGHT East winds near 20 knots, decreasing to 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at 6 seconds. A slight chance of showers. SUNDAY East winds 15 to 20 knots, decreasing to near 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 7 seconds. A slight chance of showers. SUNDAY NIGHT Northeast to east winds near 15 knots, decreasing to 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. A slight chance of showers. MONDAY Northeast to east winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. MONDAY NIGHT Northeast to east winds 10 to 15 knots, decreasing to near 10 knots. Seas 1 to 3 feet. A chance of showers with a slight chance of thunderstorms. TUESDAY Northeast to east winds 5 to 10 knots. Seas 1 to 3 feet. A chance of showers with a slight chance of thunderstorms. TUESDAY NIGHT Northeast winds near 10 knots, increasing to 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet. A chance of showers with a slight chance of thunderstorms. WEDNESDAY Northeast to east winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. A chance of showers with a slight chance of thunderstorms. WEDNESDAY NIGHT Northeast to east winds near 20 knots, increasing to 20 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. A chance of showers with a slight chance of thunderstorms. $$
GMZ052>055-072>075-050215- 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- 1011 AM EDT Sat Apr 4 2026 SMALL CRAFT ADVISORY IN EFFECT THIS AFTERNOON East winds near 20 knots. Seas 4 to 7 feet, occasionally to 9 feet. Wave Detail: East 7 feet at 7 seconds. A slight chance of showers. TONIGHT East winds near 20 knots, decreasing to 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at 6 seconds. A slight chance of showers. SUNDAY East winds 15 to 20 knots, decreasing to near 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 7 seconds. A slight chance of showers. SUNDAY NIGHT Northeast to east winds near 15 knots, decreasing to 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. A slight chance of showers. MONDAY Northeast to east winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. MONDAY NIGHT Northeast to east winds 10 to 15 knots, decreasing to near 10 knots. Seas 1 to 3 feet. A chance of showers with a slight chance of thunderstorms. TUESDAY Northeast to east winds 5 to 10 knots. Seas 1 to 3 feet. A chance of showers with a slight chance of thunderstorms. TUESDAY NIGHT Northeast winds near 10 knots, increasing to 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet. A chance of showers with a slight chance of thunderstorms. WEDNESDAY Northeast to east winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. A chance of showers with a slight chance of thunderstorms. WEDNESDAY NIGHT Northeast to east winds near 20 knots, increasing to 20 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. A chance of showers with a slight chance of thunderstorms. $$