Hazardous marine condition(s):
Short Term Forecast
GMZ005-170830-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
430 PM EDT Fri Oct 16 2026
.SYNOPSIS...
A frontal system will track southeastward across the country this
afternoon through tonight. Breezes are on track to slacken from
gentle to moderate to light to gentle, possibly variable, tonight.
While breezes slacken and veer northeasterly, shower coverage is
expected to increase across the nearshore and offshore waters. The
cold front associated with this frontal system is forecast to
reach our Gulf waters on Saturday night. Breezes are on track to
freshen rapidly alongside squally conditions. A Small Craft
Advisory will likely be required for part or all of the Florida
Keys waters by Saturday night into Sunday. Fresh, occasionally
strong, northeasterly breezes are expected to persist through the
start of the week.
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.
$$
GMZ033-034-170830- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 430 PM EDT Fri Oct 16 2026 TONIGHT Northeast to east winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds. Showers likely with a chance of thunderstorms. SATURDAY Northeast winds 5 to 10 knots, increasing to 15 to 20 knots. Seas 1 foot or less, building to 1 to 2 feet. Showers likely with a chance of thunderstorms. SATURDAY NIGHT North to northeast winds 15 to 20 knots, increasing to northeast 20 to 25 knots. Seas 2 to 3 feet, building to 5 to 7 feet, occasionally to 9 feet. Wave Detail: North 3 feet at 5 seconds, becoming north 6 feet at 7 seconds. Showers with a chance of thunderstorms. SUNDAY Northeast winds 20 to 25 knots, increasing to 25 to 30 knots. Seas 5 to 8 feet, occasionally to 10 feet. A chance of showers with a slight chance of thunderstorms. SUNDAY NIGHT Northeast winds 25 to 30 knots, decreasing to 20 to 25 knots. Seas 6 to 8 feet, occasionally to 10 feet. A slight chance of showers. MONDAY Northeast winds near 25 knots, decreasing to 20 to 25 knots. Seas 5 to 8 feet, occasionally to 10 feet, subsiding to 5 to 6, occasionally to 8 feet. A slight chance of showers. MONDAY NIGHT Northeast winds 20 to 25 knots. Seas 5 to 6 feet, occasionally to 8 feet. A slight chance of showers. TUESDAY Northeast winds 20 to 25 knots, decreasing to 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet, subsiding to 3 to 4 feet, occasionally to 5 feet. A slight chance of showers. TUESDAY NIGHT Northeast winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. A slight chance of showers. WEDNESDAY Northeast winds 15 to 20 knots, decreasing to 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet. A slight chance of showers. WEDNESDAY NIGHT North to northeast winds near 15 knots. Seas 2 to 3 feet. A slight chance of showers. $$
GMZ033-034-170830- 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- 430 PM EDT Fri Oct 16 2026 TONIGHT Northeast to east winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds. Showers likely with a chance of thunderstorms. SATURDAY Northeast winds 5 to 10 knots, increasing to 15 to 20 knots. 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, increasing to northeast 20 to 25 knots. Seas 2 to 3 feet, building to 5 to 7 feet, occasionally to 9 feet. Wave Detail: North 3 feet at 5 seconds, becoming north 6 feet at 7 seconds. Showers with a chance of thunderstorms. SUNDAY Northeast winds 20 to 25 knots, increasing to 25 to 30 knots. Seas 5 to 8 feet, occasionally to 10 feet. A chance of showers with a slight chance of thunderstorms. SUNDAY NIGHT Northeast winds 25 to 30 knots, decreasing to 20 to 25 knots. Seas 6 to 8 feet, occasionally to 10 feet. A slight chance of showers. MONDAY Northeast winds near 25 knots, decreasing to 20 to 25 knots. Seas 5 to 8 feet, occasionally to 10 feet, subsiding to 5 to 6, occasionally to 8 feet. A slight chance of showers. MONDAY NIGHT Northeast winds 20 to 25 knots. Seas 5 to 6 feet, occasionally to 8 feet. A slight chance of showers. TUESDAY Northeast winds 20 to 25 knots, decreasing to 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet, subsiding to 3 to 4 feet, occasionally to 5 feet. A slight chance of showers. TUESDAY NIGHT Northeast winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. A slight chance of showers. WEDNESDAY Northeast winds 15 to 20 knots, decreasing to 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet. A slight chance of showers. WEDNESDAY NIGHT North to northeast winds near 15 knots. Seas 2 to 3 feet. A slight chance of showers. $$