GMZ005-302045-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
444 AM EDT Fri Oct 30 2026
.SYNOPSIS...
Gentle to moderate northeasterly breezes will prevail across the
Florida Keys through the first half of the weekend. By late
Saturday, a high pressure system developing over the eastern
United States will be able to build and set up north of the
Carolinas. Breezes may be able to freshen to moderate to fresh
over the northern waters of the Florida Keys. Northerly swell
over the easternmost waters will be a concern for the second half
of the weekend. Small Craft Exercise Caution headlines may be
required at times between Saturday and Sunday. Shower chances are
also expected to peak Saturday night through Sunday night.
The Approximate Shoreward Edge of the Gulf Stream as of October
27, 2026...
19 NM south of Dry Tortugas Light, on Loggerhead Key
34 NM south of Cosgrove Shoal Light, off the Marquesas Keys
28 NM south of Sand Key Light, off Key West
38 NM south of Looe Key, off Big Pine Key
31 NM southeast of Sombrero Key Light, off Marathon
17 NM south-southeast of Alligator Reef Light, off Islamorada
10 NM southeast of Molasses Reef Light, off Key Largo
10 NM northwest 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.
$$
GMZ033-034-302045- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 444 AM EDT Fri Oct 30 2026 TODAY Northeast winds 10 to 15 knots early, becoming northeast to east. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 4 seconds. A slight chance of showers and thunderstorms. TONIGHT Northeast to east winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: North to northeast 3 feet at 5 seconds. A chance of showers with a slight chance of thunderstorms. SATURDAY Northeast to east winds 10 to 15 knots, increasing to near 15 knots. Seas 2 to 3 feet. Wave Detail: Northeast to east 3 feet at 4 seconds. A chance of showers with a slight chance of thunderstorms. SATURDAY NIGHT East winds 15 to 20 knots, decreasing to near 15 knots. Seas 2 to 3 feet. A chance of showers with a slight chance of thunderstorms. SUNDAY East winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms. SUNDAY NIGHT Northeast to east winds near 15 knots. Seas 2 to 3 feet. Showers likely with a chance of thunderstorms. MONDAY Northeast to east winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms. MONDAY NIGHT Northeast winds 10 to 15 knots, decreasing to near 10 knots. Seas around 2 feet, subsiding to 1 to 2 feet. A slight chance of showers. TUESDAY North to northeast winds 5 to 10 knots. Seas 1 to 2 feet. TUESDAY NIGHT Northeast winds 5 to 10 knots, becoming east after midnight. Seas around 1 foot. $$
GMZ033-034-302045- 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- 444 AM EDT Fri Oct 30 2026 TODAY Northeast winds 10 to 15 knots early, becoming northeast to east. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 4 seconds. A slight chance of showers and thunderstorms. TONIGHT Northeast to east winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: North to northeast 3 feet at 5 seconds. A chance of showers with a slight chance of thunderstorms. SATURDAY Northeast to east winds 10 to 15 knots, increasing to near 15 knots. Seas 2 to 3 feet. Wave Detail: Northeast to east 3 feet at 4 seconds. A chance of showers with a slight chance of thunderstorms. SATURDAY NIGHT East winds 15 to 20 knots, decreasing to near 15 knots. Seas 2 to 3 feet. A chance of showers with a slight chance of thunderstorms. SUNDAY East winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms. SUNDAY NIGHT Northeast to east winds near 15 knots. Seas 2 to 3 feet. Showers likely with a chance of thunderstorms. MONDAY Northeast to east winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms. MONDAY NIGHT Northeast winds 10 to 15 knots, decreasing to near 10 knots. Seas around 2 feet, subsiding to 1 to 2 feet. A slight chance of showers. TUESDAY North to northeast winds 5 to 10 knots. Seas 1 to 2 feet. TUESDAY NIGHT Northeast winds 5 to 10 knots, becoming east after midnight. Seas around 1 foot. $$