GMZ005-182130-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
417 AM EST Tue Nov 18 2025
.SYNOPSIS...High pressure located over the eastern CONUS will
slowly move into the western Atlantic today and tonight. The high
will slowly build and support freshening northeast to east
breezes during the work week. Moderate to fresh breezes are
possible south of the island chain. Late in the week, a low
pressure system traversing the southeastern CONUS may allow
breezes to slacken to light to gentle.
The Approximate Shoreward Edge of the Gulf Stream as of November 14...
54 NM South of Dry Tortugas Light...on Loggerhead Key.
23 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
19 NM South of Sand Key Light...off Key West.
17 NM South of Looe Key...off Big Pine Key.
15 NM Southeast of Sombrero Key Light...off Marathon.
4 NM Southeast of Alligator Reef Light...off Islamorada.
1 NM Southeast of Molasses Reef Light...off Key Largo.
1 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.
$$
GMZ032-035-182130- Bayside and Gulfside from Craig Key to west end of Seven Mile Bridge- Gulf of America from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- 417 AM EST Tue Nov 18 2025 TODAY Northeast to east winds near 10 knots, increasing to 10 to 15 knots. Seas around 1 foot, building to 1 to 2 feet. Nearshore waters a light chop, becoming a light to moderate chop. TONIGHT Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a light to moderate chop. WEDNESDAY Northeast to east winds 10 to 15 knots, briefly decreasing to near 10 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop, briefly becoming a light chop. WEDNESDAY NIGHT Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. THURSDAY Northeast to east winds near 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a moderate chop. THURSDAY NIGHT Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a light to moderate chop. FRIDAY Northeast to east winds decreasing to near 10 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters becoming a light chop. FRIDAY NIGHT East winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. SATURDAY East winds 5 to 10 knots. Seas subsiding to 1 foot or less. Nearshore waters smooth to a light chop. SATURDAY NIGHT Northeast winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. $$
GMZ032-035-182130- Bayside and Gulfside from Craig Key to west end of Seven Mile Bridge- Gulf of America from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- 417 AM EST Tue Nov 18 2025 TODAY Northeast to east winds near 10 knots, increasing to 10 to 15 knots. Seas around 1 foot, building to 1 to 2 feet. Nearshore waters a light chop, becoming a light to moderate chop. TONIGHT Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a light to moderate chop. WEDNESDAY Northeast to east winds 10 to 15 knots, briefly decreasing to near 10 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop, briefly becoming a light chop. WEDNESDAY NIGHT Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. THURSDAY Northeast to east winds near 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a moderate chop. THURSDAY NIGHT Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a light to moderate chop. FRIDAY Northeast to east winds decreasing to near 10 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters becoming a light chop. FRIDAY NIGHT East winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. SATURDAY East winds 5 to 10 knots. Seas subsiding to 1 foot or less. Nearshore waters smooth to a light chop. SATURDAY NIGHT Northeast winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. $$