GMZ005-021530-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1021 PM EST Thu Jan 1 2026
.SYNOPSIS...Gentle to moderate northwest to north breezes will
prevail this afternoon before slackening rapidly heading into the
afternoon hours. High pressure currently over the western Gulf
moves over Florida and the Florida Keys through the end of the
week. This will promote a period of light and variable breezes. A
weak front is expected to pass through the Key sometime Sunday
with a return of northerly breezes.
The Approximate Shoreward Edge of the Gulf Stream as of January
01...
14 NM South of Dry Tortugas Light...on Loggerhead Key.
14 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
14 NM South of Sand Key Light...off Key West.
13 NM South of Looe Key...off Big Pine Key.
12 NM Southeast of Sombrero Key Light...off Marathon.
9 NM Southeast of Alligator Reef Light...off Islamorada.
3 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.
$$
GMZ032-035-021530- Bayside and Gulf side from Craig Key to west end of Seven Mile Bridge- Gulf of Mexico from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- 1021 PM EST Thu Jan 1 2026 OVERNIGHT North to northeast winds near 10 knots. Seas 1 to 2 feet, except around 2 feet west of the Marquesas Keys. Nearshore waters a light chop. FRIDAY Northeast winds near 5 knots, becoming variable in the afternoon. 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 southwest in the afternoon. Seas 1 foot or less. Nearshore waters smooth. SATURDAY NIGHT Southwest to west winds 5 to 10 knots, increasing to near 10 knots. Seas 1 foot or less, except building to 1 to 2 feet west of the Marquesas Keys. Nearshore waters smooth to a light chop, becoming a light chop. Isolated showers. SUNDAY Southwest to west winds near 10 knots, becoming west to northwest near 15 knots. Seas 1 to 2 feet, building to 2 to 3 feet. Nearshore waters a light chop, becoming to a moderate chop. Isolated showers. SUNDAY NIGHT Northwest to north winds near 15 knots, becoming north to northeast. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters a moderate chop. MONDAY North to northeast winds near 15 knots, becoming northeast 5 to 10 knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet. West of the Marquesas Keys, seas 2 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet. Nearshore waters a moderate chop, becoming smooth to a light chop. MONDAY NIGHT North to northeast winds 5 to 10 knots, becoming northeast 10 to 15 knots. Seas 1 to 2 feet, except around 2 feet west of the Marquesas Keys. Nearshore waters smooth to a light chop, becoming a light to moderate chop. TUESDAY Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. TUESDAY NIGHT East winds 10 to 15 knots. Seas around 1 foot. Nearshore waters a light to moderate chop. $$
GMZ032-035-021530- Bayside and Gulf side from Craig Key to west end of Seven Mile Bridge- Gulf of Mexico from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- 1021 PM EST Thu Jan 1 2026 OVERNIGHT North to northeast winds near 10 knots. Seas 1 to 2 feet, except around 2 feet west of the Marquesas Keys. Nearshore waters a light chop. FRIDAY Northeast winds near 5 knots, becoming variable in the afternoon. 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 southwest in the afternoon. Seas 1 foot or less. Nearshore waters smooth. SATURDAY NIGHT Southwest to west winds 5 to 10 knots, increasing to near 10 knots. Seas 1 foot or less, except building to 1 to 2 feet west of the Marquesas Keys. Nearshore waters smooth to a light chop, becoming a light chop. Isolated showers. SUNDAY Southwest to west winds near 10 knots, becoming west to northwest near 15 knots. Seas 1 to 2 feet, building to 2 to 3 feet. Nearshore waters a light chop, becoming to a moderate chop. Isolated showers. SUNDAY NIGHT Northwest to north winds near 15 knots, becoming north to northeast. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters a moderate chop. MONDAY North to northeast winds near 15 knots, becoming northeast 5 to 10 knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet. West of the Marquesas Keys, seas 2 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet. Nearshore waters a moderate chop, becoming smooth to a light chop. MONDAY NIGHT North to northeast winds 5 to 10 knots, becoming northeast 10 to 15 knots. Seas 1 to 2 feet, except around 2 feet west of the Marquesas Keys. Nearshore waters smooth to a light chop, becoming a light to moderate chop. TUESDAY Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. TUESDAY NIGHT East winds 10 to 15 knots. Seas around 1 foot. Nearshore waters a light to moderate chop. $$