GMZ005-010930-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
419 PM EST Wed Dec 31 2025
.SYNOPSIS...Mainly fresh northwest to north breezes will slacken
slowly through the day as high pressure moves east to southeast
into the eastern Gulf. Another nocturnal wind surge is expected
overnight into tomorrow morning, but once the high moves overhead
towards the end of the week/weekend breezes become light and
variable.
The Approximate Shoreward Edge of the Gulf Stream as of December
27...
18 NM South of Dry Tortugas Light...on Loggerhead Key.
11 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
12 NM South of Sand Key Light...off Key West.
12 NM South of Looe Key...off Big Pine Key.
13 NM Southeast of Sombrero Key Light...off Marathon.
8 NM Southeast of Alligator Reef Light...off Islamorada.
2 NM Southeast of Molasses Reef Light...off Key Largo.
2 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 and RTOFS.
$$
GMZ032-035-010930- Bayside and Gulfside from Craig Key to west end of Seven Mile Bridge- Gulf of America from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- 419 PM EST Wed Dec 31 2025 TONIGHT Northwest to north winds near 15 knots. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 6 feet west of the Marquesas Keys. Nearshore waters a moderate chop. THURSDAY Northwest to north winds 10 to 15 knots, decreasing to 5 to 10 knots in the afternoon. Seas 2 to 3 feet, subsiding to 1 to 2 feet. West of the Marquesas Keys, seas around 3 feet, subsiding to around 2 feet. Nearshore waters a light to moderate chop, becoming smooth to a light chop. THURSDAY NIGHT North winds 5 to 10 knots, becoming north to northeast. Seas 1 to 2 feet. Nearshore waters smooth to a light chop. FRIDAY Northeast to east winds near 5 knots, becoming variable. Seas 1 foot or less. Nearshore waters smooth. FRIDAY NIGHT Variable winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. SATURDAY Variable winds near 5 knots, becoming south to southwest. Seas 1 foot or less. Nearshore waters smooth. SATURDAY NIGHT Southwest winds near 5 knots, becoming southwest to west 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth, becoming smooth to a light chop. SUNDAY Southwest to west winds near 10 knots, becoming west to northwest 10 to 15 knots. Seas 1 to 2 feet, except building to 2 to 3 feet west of the Marquesas Keys. Nearshore waters a light chop, becoming a light to moderate chop. Isolated showers. SUNDAY NIGHT Northwest winds 10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a light to moderate chop. MONDAY North winds 10 to 15 knots, becoming 5 to 10 knots in the afternoon. Seas 2 to 3 feet, except around 3 feet west of the Marquesas Keys. Nearshore waters a light to moderate chop, becoming smooth to a light chop. MONDAY NIGHT North winds 5 to 10 knots. Seas 1 to 2 feet. Nearshore waters smooth to a light chop. $$
GMZ032-035-010930- 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- 419 PM EST Wed Dec 31 2025 TONIGHT Northwest to north winds near 15 knots. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 6 feet west of the Marquesas Keys. Nearshore waters a moderate chop. THURSDAY Northwest to north winds 10 to 15 knots, decreasing to 5 to 10 knots in the afternoon. Seas 2 to 3 feet, subsiding to 1 to 2 feet. West of the Marquesas Keys, seas around 3 feet, subsiding to around 2 feet. Nearshore waters a light to moderate chop, becoming smooth to a light chop. THURSDAY NIGHT North winds 5 to 10 knots, becoming north to northeast. Seas 1 to 2 feet. Nearshore waters smooth to a light chop. FRIDAY Northeast to east winds near 5 knots, becoming variable. Seas 1 foot or less. Nearshore waters smooth. FRIDAY NIGHT Variable winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. SATURDAY Variable winds near 5 knots, becoming south to southwest. Seas 1 foot or less. Nearshore waters smooth. SATURDAY NIGHT Southwest winds near 5 knots, becoming southwest to west 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth, becoming smooth to a light chop. SUNDAY Southwest to west winds near 10 knots, becoming west to northwest 10 to 15 knots. Seas 1 to 2 feet, except building to 2 to 3 feet west of the Marquesas Keys. Nearshore waters a light chop, becoming a light to moderate chop. Isolated showers. SUNDAY NIGHT Northwest 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. MONDAY North winds 10 to 15 knots, becoming 5 to 10 knots in the afternoon. Seas 2 to 3 feet, except around 3 feet west of the Marquesas Keys. Nearshore waters a light to moderate chop, becoming smooth to a light chop. MONDAY NIGHT North winds 5 to 10 knots. Seas 1 to 2 feet. Nearshore waters smooth to a light chop. $$