GMZ005-160230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1022 AM EDT Thu Oct 15 2026
.SYNOPSIS...
High pressure centered just off the Southeast coastline will
interact with a weak surface trough that remains across the area.
This will promote gentle to moderate easterly breezes over the for
at least the next 24 hours. Late week, a second, much stronger
front, is expected to drive southeastward through the Gulf towards
the Florida Keys over the weekend before stalling. Fresh to
strong breezes, along with squally conditions, will be possible
for the latter part of the weekend. A Small Craft Advisory likely
will be required for portions or all of the Florida Keys marine
zones by Sunday.
The Approximate Shoreward Edge of the Gulf Stream as of October
9, 2026...
53 NM south-southeast of Dry Tortugas Light, on Loggerhead Key
33 NM south-southeast of Cosgrove Shoal Light, off the Marquesas Keys
24 NM south-southeast of Sand Key Light, off Key West
19 NM south-southeast of Looe Key, off Big Pine Key
13 NM south-southeast of Sombrero Key Light, off Marathon
5 NM south-southeast of Alligator Reef Light, off Islamorada
2 NM east of Molasses Reef Light, off Key Largo
2 NM east of Carysfort Reef Light, off Ocean Reef
Gulf Stream Information Courtesy of the Naval Oceanographic
Office.
$$
GMZ033-034-160230- 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- 1022 AM EDT Thu Oct 15 2026 THIS AFTERNOON East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 4 seconds. A slight chance of showers and thunderstorms. TONIGHT East winds near 15 knots. Seas around 3 feet. Wave Detail: East 3 feet at 4 seconds. A chance of showers with a slight chance of thunderstorms. FRIDAY East to southeast winds 10 to 15 knots, becoming northeast to east and decreasing to 5 to 10 knots in the afternoon. Seas 2 to 3 feet, subsiding to 1 to 2 feet. Wave Detail: East to southeast 3 feet at 4 seconds. A chance of showers with a slight chance of thunderstorms. FRIDAY NIGHT Northeast winds 5 to 10 knots, decreasing to near 5 knots. Seas around 1 foot, subsiding to 1 foot or less. Showers likely with a slight chance of thunderstorms. SATURDAY Northeast to east winds near 5 knots, becoming north to northeast and increasing to near 15 knots in the afternoon. Seas 1 foot or less, building to 1 to 2 feet. Showers likely with a chance of thunderstorms. SATURDAY NIGHT North to northeast winds 15 to 20 knots, becoming northeast and increasing to 20 to 25 knots. Seas 2 to 3 feet, building to 4 to 6 feet, occasionally to 8 feet. Showers with a chance of thunderstorms. SUNDAY Northeast to east winds near 25 knots. Seas 5 to 8 feet, occasionally to 10 feet. Showers with a chance of thunderstorms. SUNDAY NIGHT Northeast to east winds near 25 knots. Seas 5 to 8 feet, occasionally to 10 feet. A chance of thunderstorms. Showers likely. MONDAY Northeast to east winds 20 to 25 knots, decreasing to 15 to 20 knots in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet. Showers likely with a chance of thunderstorms. MONDAY NIGHT Northeast to east winds increasing to 20 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. A chance of showers and thunderstorms. $$
GMZ033-034-160230- 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- 1022 AM EDT Thu Oct 15 2026 THIS AFTERNOON East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 4 seconds. A slight chance of showers and thunderstorms. TONIGHT East winds near 15 knots. Seas around 3 feet. Wave Detail: East 3 feet at 4 seconds. A chance of showers with a slight chance of thunderstorms. FRIDAY East to southeast winds 10 to 15 knots, becoming northeast to east and decreasing to 5 to 10 knots in the afternoon. Seas 2 to 3 feet, subsiding to 1 to 2 feet. Wave Detail: East to southeast 3 feet at 4 seconds. A chance of showers with a slight chance of thunderstorms. FRIDAY NIGHT Northeast winds 5 to 10 knots, decreasing to near 5 knots. Seas around 1 foot, subsiding to 1 foot or less. Showers likely with a slight chance of thunderstorms. SATURDAY Northeast to east winds near 5 knots, becoming north to northeast and increasing to near 15 knots in the afternoon. Seas 1 foot or less, building to 1 to 2 feet. Showers likely with a chance of thunderstorms. SATURDAY NIGHT North to northeast winds 15 to 20 knots, becoming northeast and increasing to 20 to 25 knots. Seas 2 to 3 feet, building to 4 to 6 feet, occasionally to 8 feet. Showers with a chance of thunderstorms. SUNDAY Northeast to east winds near 25 knots. Seas 5 to 8 feet, occasionally to 10 feet. Showers with a chance of thunderstorms. SUNDAY NIGHT Northeast to east winds near 25 knots. Seas 5 to 8 feet, occasionally to 10 feet. A chance of thunderstorms. Showers likely. MONDAY Northeast to east winds 20 to 25 knots, decreasing to 15 to 20 knots in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet. Showers likely with a chance of thunderstorms. MONDAY NIGHT Northeast to east winds increasing to 20 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. A chance of showers and thunderstorms. $$