GMZ005-011415-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1008 PM EDT Sat Oct 31 2026
.SYNOPSIS...
A broad area of high pressure over the eastern United States will
sustain gentle to moderate, occasionally fresh, breezes across the
FLorida Keys waters this weekend. Small Craft Should Exercise
Caution for increasing winds headlines are in effect for portions
of the marine zones tonight. Breezes are on track to slacken
tomorrow, but stronger winds along the east coast will generate a
higher northerly swell for the waters south of the Upper Keys.
Expect breezes to slacken during the weekend with light to gentle
breezes possible midweek. Shower chances will be elevated through
Monday with the peak expected on Sunday. Drier conditions will be
able to set up during the middle of the week.
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.
$$
GMZ033-034-011415- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 1008 PM EDT Sat Oct 31 2026 SMALL CRAFT SHOULD EXERCISE CAUTION FOR INCREASING WINDS TONIGHT East winds near 15 knots, increasing to 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 4 seconds. A chance of showers and thunderstorms. SUNDAY East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 4 seconds. Showers likely with a chance of thunderstorms. SUNDAY NIGHT East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 4 seconds. Showers likely with a chance of thunderstorms. MONDAY East winds 10 to 15 knots. Seas around 2 feet. A chance of showers and thunderstorms. MONDAY NIGHT Northeast to east winds 10 to 15 knots. Seas around 2 feet. A slight chance of showers and thunderstorms. TUESDAY Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. TUESDAY NIGHT Northeast to east winds near 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. WEDNESDAY East winds 5 to 10 knots. Seas around 1 foot. A slight chance of showers. WEDNESDAY NIGHT Northwest to north winds near 5 knots, becoming south to southwest. Seas around 1 foot. THURSDAY Southwest to west winds 5 to 10 knots. Seas around 1 foot. A slight chance of showers. THURSDAY NIGHT West winds 5 to 10 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. $$
GMZ033-034-011415- 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- 1008 PM EDT Sat Oct 31 2026 SMALL CRAFT SHOULD EXERCISE CAUTION FOR INCREASING WINDS TONIGHT East winds near 15 knots, increasing to 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 4 seconds. A chance of showers and thunderstorms. SUNDAY East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 4 seconds. Showers likely with a chance of thunderstorms. SUNDAY NIGHT East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 4 seconds. Showers likely with a chance of thunderstorms. MONDAY East winds 10 to 15 knots. Seas around 2 feet. A chance of showers and thunderstorms. MONDAY NIGHT Northeast to east winds 10 to 15 knots. Seas around 2 feet. A slight chance of showers and thunderstorms. TUESDAY Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. TUESDAY NIGHT Northeast to east winds near 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. WEDNESDAY East winds 5 to 10 knots. Seas around 1 foot. A slight chance of showers. WEDNESDAY NIGHT Northwest to north winds near 5 knots, becoming south to southwest. Seas around 1 foot. THURSDAY Southwest to west winds 5 to 10 knots. Seas around 1 foot. A slight chance of showers. THURSDAY NIGHT West winds 5 to 10 knots. Seas around 1 foot. A slight chance of showers and thunderstorms. $$