GMZ005-272130-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
421 AM EST Fri Feb 27 2026
.SYNOPSIS...
Light to moderate east to southeasterly breezes across the Keys
coastal waters will persist through the end of the month. Over
the weekend, the Atlantic ridge will shift further eastward as a
couple of frontal systems stall over northern Florida. Expect a
period of light and variable winds as a col region forms near the
northern waters on Saturday. A Cuban Shadow will keep shower
coverage limited during this period. Next week, a broad high
pressure system is forecast to migrate into the eastern United
States, which would support rapidly freshening breezes across the
southern waters.
The Approximate Shoreward Edge of the Gulf Stream as of February
26...
14 NM South of Dry Tortugas Light...on Loggerhead Key.
4 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
2 NM South of Sand Key Light...off Key West.
9 NM South of Looe Key...off Big Pine Key.
14 NM Southeast of Sombrero Key Light...off Marathon.
12 NM Southeast of Alligator Reef Light...off Islamorada.
5 NM Southeast of Molasses Reef Light...off Key Largo.
3 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.
$$
GMZ032-035-272130- Bayside and Gulfside from Craig Key to west end of Seven Mile Bridge- Gulf of America from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- 421 AM EST Fri Feb 27 2026 TODAY East to southeast winds 5 to 10 knots. Seas 1 foot or less, except 1 to 2 feet west of the Marquesas Keys. Nearshore waters smooth to a light chop. TONIGHT East to southeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers. SATURDAY East to southeast winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Isolated showers. SATURDAY NIGHT North to northeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers. SUNDAY Northeast to east winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers. SUNDAY NIGHT Northeast to east winds increasing to near 10 knots. Seas building to around 1 foot. Nearshore waters becoming a light chop. Isolated showers. MONDAY Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Isolated showers. MONDAY NIGHT Northeast to east winds near 15 knots, increasing to 15 to 20 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a moderate chop, becoming choppy. Isolated showers. TUESDAY AND TUESDAY NIGHT Northeast to east winds 15 to 20 knots. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters choppy. Isolated showers. $$
GMZ032-035-272130- 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- 421 AM EST Fri Feb 27 2026 TODAY East to southeast winds 5 to 10 knots. Seas 1 foot or less, except 1 to 2 feet west of the Marquesas Keys. Nearshore waters smooth to a light chop. TONIGHT East to southeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers. SATURDAY East to southeast winds near 5 knots. Seas 1 foot or less. Nearshore waters smooth. Isolated showers. SATURDAY NIGHT North to northeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers. SUNDAY Northeast to east winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers. SUNDAY NIGHT Northeast to east winds increasing to near 10 knots. Seas building to around 1 foot. Nearshore waters becoming a light chop. Isolated showers. MONDAY Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Isolated showers. MONDAY NIGHT Northeast to east winds near 15 knots, increasing to 15 to 20 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a moderate chop, becoming choppy. Isolated showers. TUESDAY AND TUESDAY NIGHT Northeast to 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. Isolated showers. $$