GMZ005-261545-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1031 PM EST Sun Jan 25 2026
.SYNOPSIS...Light to gentle breezes today will trend downwards
and clock southerly tonight as an Atlantic ridge retreats eastward
and a prefrontal trough advances into the eastern Gulf. The tail
end of a prefrontal trough will swing through South Florida and
the Keys, followed by a strong cold front. Expect winds to
strengthen modestly on Monday before surging considerably in wake
of the front with fresh to strong northerly breezes beginning
Monday and Monday night. Winds are expected to relax substantially
on Tuesday as high pressure builds southeastward through the
southeast and across Florida. Another somewhat weaker wind surge
is becoming increasingly likely Tuesday night as a reinforcing
cold front rolls southward across the area.
The Approximate Shoreward Edge of the Gulf Stream as of January
18...
18 NM South of Dry Tortugas Light...on Loggerhead Key.
16 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
15 NM South of Sand Key Light...off Key West.
13 NM South of Looe Key...off Big Pine Key.
13 NM Southeast of Sombrero Key Light...off Marathon.
12 NM Southeast of Alligator Reef Light...off Islamorada.
7 NM Southeast of Molasses Reef Light...off Key Largo.
4 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.
$$
GMZ032-035-261545- 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- 1031 PM EST Sun Jan 25 2026 SMALL CRAFT ADVISORY LIKELY WILL BE REQUIRED MONDAY NIGHT OVERNIGHT Southeast to south winds 5 to 10 knots, becoming south to southwest. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers. MONDAY Southwest to west winds 5 to 10 knots, becoming west to northwest 15 to 20 knots. Seas building to 1 to 2 feet. Nearshore waters smooth to a light chop, becoming choppy. Isolated showers. MONDAY NIGHT Northwest to north winds 20 to 25 knots, increasing to near 25 knots. Seas 2 to 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet after midnight. West of the Marquesas Keys, seas 4 to 6 feet, occasionally to 8 feet, building to 6 to 8 feet, occasionally to 10 feet. Nearshore waters very rough, becoming extremely rough. Isolated showers early. TUESDAY North winds 20 to 25 knots, becoming north to northeast 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. West of the Marquesas Keys, seas 7 to 9 feet, occasionally to 11 feet, subsiding to 5 to 7 feet, occasionally to 9 feet. Nearshore waters very rough, becoming choppy. TUESDAY NIGHT North to northeast winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 4 to 6 feet, occasionally to 8 feet west of the Marquesas Keys. Nearshore waters choppy. WEDNESDAY North winds near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet, except around 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters a moderate chop. Isolated showers. WEDNESDAY NIGHT Northwest to north winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters choppy. Isolated showers. THURSDAY North winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet, except around 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters choppy. THURSDAY NIGHT North to northeast winds near 15 knots. Seas subsiding to 1 to 3 feet. Nearshore waters a moderate chop. FRIDAY North to northeast winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. FRIDAY NIGHT North to northeast winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. Isolated showers. $$
GMZ032-035-261545- 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- 1031 PM EST Sun Jan 25 2026 SMALL CRAFT ADVISORY LIKELY WILL BE REQUIRED MONDAY NIGHT OVERNIGHT Southeast to south winds 5 to 10 knots, becoming south to southwest. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers. MONDAY Southwest to west winds 5 to 10 knots, becoming west to northwest 15 to 20 knots. Seas building to 1 to 2 feet. Nearshore waters smooth to a light chop, becoming choppy. Isolated showers. MONDAY NIGHT Northwest to north winds 20 to 25 knots, increasing to near 25 knots. Seas 2 to 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet after midnight. West of the Marquesas Keys, seas 4 to 6 feet, occasionally to 8 feet, building to 6 to 8 feet, occasionally to 10 feet. Nearshore waters very rough, becoming extremely rough. Isolated showers early. TUESDAY North winds 20 to 25 knots, becoming north to northeast 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. West of the Marquesas Keys, seas 7 to 9 feet, occasionally to 11 feet, subsiding to 5 to 7 feet, occasionally to 9 feet. Nearshore waters very rough, becoming choppy. TUESDAY NIGHT North to northeast winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 4 to 6 feet, occasionally to 8 feet west of the Marquesas Keys. Nearshore waters choppy. WEDNESDAY North winds near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet, except around 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters a moderate chop. Isolated showers. WEDNESDAY NIGHT Northwest to north winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters choppy. Isolated showers. THURSDAY North winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet, except around 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters choppy. THURSDAY NIGHT North to northeast winds near 15 knots. Seas subsiding to 1 to 3 feet. Nearshore waters a moderate chop. FRIDAY North to northeast winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. FRIDAY NIGHT North to northeast winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. Isolated showers. $$