GMZ005-121430-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
926 PM EST Wed Nov 11 2026
.SYNOPSIS...
High pressure is gradually being nudged out of the area by
troughing to our north, and we will see the environment respond
with breezes veering clockwise and slackening tonight into
Thursday morning. As the troughing trails deeper down the Florida
peninsula, the gradient will tighten and breezes will begin to
freshen. Small Craft Exercise Caution headlines and hazards may be
required as early as Friday afternoon and evening. Hazardous
winds from the first front are not expected to last very long, but
higher seas may take more time to subside. Even though winds will
briefly slacken during the weekend, a reinforcing front Sunday
night and Monday morning will bring hazardous marine conditions
again, and we may see an extended period of strong winds and
higher seas.
The Approximate Shoreward Edge of the Gulf Stream as of November 8,
2026...
30 NM south of Dry Tortugas Light, on Loggerhead Key
38 NM south of Cosgrove Shoal Light, off the Marquesas Keys
46 NM south of Sand Key Light, off Key West
20 NM south of Looe Key, off Big Pine Key
15 NM southeast of Sombrero Key Light, off Marathon
10 NM south of Alligator Reef Light, off Islamorada
8 NM southeast of Molasses Reef Light, off Key Largo
5 NM east 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.
$$
GMZ032-035-121430- 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- 926 PM EST Wed Nov 11 2026 OVERNIGHT Southeast winds 5 to 10 knots, becoming south to southwest and decreasing to near 5 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop, becoming smooth. A slight chance of showers and thunderstorms. THURSDAY Southwest to west winds near 5 knots early, becoming west and increasing to 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth, becoming smooth to a light chop. A slight chance of showers and thunderstorms. THURSDAY NIGHT West to northwest winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. A chance of showers with a slight chance of thunderstorms. FRIDAY Northwest to north 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. A slight chance of showers. FRIDAY NIGHT North winds 10 to 15 knots early, increasing to 15 to 20 knots. Seas around 2 feet, building to 2 to 3 feet. Nearshore waters a light to moderate chop, becoming choppy. SATURDAY North to northeast winds 15 to 20 knots, decreasing to near 15 knots. Seas 2 to 3 feet. Nearshore waters choppy, becoming a moderate chop. SATURDAY NIGHT Northeast winds near 15 knots. Seas 2 to 3 feet. Nearshore waters a moderate chop. SUNDAY Northeast to east winds near 15 knots. Seas 2 to 3 feet. Nearshore waters a moderate chop. A slight chance of showers. SUNDAY NIGHT Northeast to east winds 15 to 20 knots. Seas 2 to 3 feet. Nearshore waters choppy. A slight chance of showers. MONDAY East winds 15 to 20 knots, increasing to near 20 knots. Seas 2 to 3 feet, except building to 4 to 5 feet, occasionally to 6 feet west of the Marquesas Keys. Nearshore waters choppy, becoming rough. A chance of showers with a slight chance of thunderstorms. MONDAY NIGHT East winds 15 to 20 knots. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters choppy. A chance of showers with a slight chance of thunderstorms. $$
GMZ032-035-121430- 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- 926 PM EST Wed Nov 11 2026 OVERNIGHT Southeast winds 5 to 10 knots, becoming south to southwest and decreasing to near 5 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop, becoming smooth. A slight chance of showers and thunderstorms. THURSDAY Southwest to west winds near 5 knots early, becoming west and increasing to 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth, becoming smooth to a light chop. A slight chance of showers and thunderstorms. THURSDAY NIGHT West to northwest winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. A chance of showers with a slight chance of thunderstorms. FRIDAY Northwest to north 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. A slight chance of showers. FRIDAY NIGHT North winds 10 to 15 knots early, increasing to 15 to 20 knots. Seas around 2 feet, building to 2 to 3 feet. Nearshore waters a light to moderate chop, becoming choppy. SATURDAY North to northeast winds 15 to 20 knots, decreasing to near 15 knots. Seas 2 to 3 feet. Nearshore waters choppy, becoming a moderate chop. SATURDAY NIGHT Northeast winds near 15 knots. Seas 2 to 3 feet. Nearshore waters a moderate chop. SUNDAY Northeast to east winds near 15 knots. Seas 2 to 3 feet. Nearshore waters a moderate chop. A slight chance of showers. SUNDAY NIGHT Northeast to east winds 15 to 20 knots. Seas 2 to 3 feet. Nearshore waters choppy. A slight chance of showers. MONDAY East winds 15 to 20 knots, increasing to near 20 knots. Seas 2 to 3 feet, except building to 4 to 5 feet, occasionally to 6 feet west of the Marquesas Keys. Nearshore waters choppy, becoming rough. A chance of showers with a slight chance of thunderstorms. MONDAY NIGHT East winds 15 to 20 knots. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters choppy. A chance of showers with a slight chance of thunderstorms. $$