GMZ005-042030-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
423 AM EDT Sat Apr 4 2026
.SYNOPSIS...A broad Atlantic high will begin to weaken and move
east during the first half of the weekend. There is high
confidence that moderate to fresh easterly breezes will slacken
during the weekend. Light to gentle breezes early next week will
freshen by Wednesday in response to a strong 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.
$$
GMZ033-034-042030- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 423 AM EDT Sat Apr 4 2026 SMALL CRAFT ADVISORY IN EFFECT TODAY East winds near 20 knots, decreasing to 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 5 seconds. TONIGHT East winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 5 seconds. A slight chance of showers. SUNDAY East winds near 15 knots, decreasing to 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds. A slight chance of showers. SUNDAY NIGHT Northeast to east winds 10 to 15 knots, decreasing to near 10 knots. Seas 1 to 3 feet. A slight chance of showers. MONDAY Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. MONDAY NIGHT Northeast winds 5 to 10 knots. Seas around 1 foot. A chance of showers with a slight chance of thunderstorms. TUESDAY Northeast winds 5 to 10 knots. Seas building to 2 to 3 feet. A chance of showers with a slight chance of thunderstorms. TUESDAY NIGHT Northeast winds 10 to 15 knots, increasing to 15 to 20 knots. Seas building to 5 to 7 feet, occasionally to 9 feet. A chance of showers with a slight chance of thunderstorms. WEDNESDAY Northeast to east winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. A chance of showers with a slight chance of thunderstorms. WEDNESDAY NIGHT Northeast to east winds near 20 knots, increasing to 20 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. A chance of showers with a slight chance of thunderstorms. $$
GMZ033-034-042030- 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- 423 AM EDT Sat Apr 4 2026 SMALL CRAFT ADVISORY IN EFFECT TODAY East winds near 20 knots, decreasing to 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 5 seconds. TONIGHT East winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 5 seconds. A slight chance of showers. SUNDAY East winds near 15 knots, decreasing to 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds. A slight chance of showers. SUNDAY NIGHT Northeast to east winds 10 to 15 knots, decreasing to near 10 knots. Seas 1 to 3 feet. A slight chance of showers. MONDAY Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. MONDAY NIGHT Northeast winds 5 to 10 knots. Seas around 1 foot. A chance of showers with a slight chance of thunderstorms. TUESDAY Northeast winds 5 to 10 knots. Seas building to 2 to 3 feet. A chance of showers with a slight chance of thunderstorms. TUESDAY NIGHT Northeast winds 10 to 15 knots, increasing to 15 to 20 knots. Seas building to 5 to 7 feet, occasionally to 9 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. $$