GMZ005-010000-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
648 AM EST Sat Feb 28 2026
.SYNOPSIS...
An Atlantic ridge across South Florida will pull further east
while a frontal boundary stalls across north central Florida. The
combination of these features will result in light breezes likely
becoming variable this afternoon. Thereafter, a broad high
pressure system is forecast to migrate into the eastern United
States, then out into the Atlantic. This is expected to support
freshening breezes, especially across the Straits of Florida.
A mix of Cautions and Advisories is becoming increasingly likely
for the bulk of the work week.
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.
$$
GMZ032-035-010000- Bayside and Gulf side from Craig Key to west end of Seven Mile Bridge- Gulf of Mexico from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- 648 AM EST Sat Feb 28 2026 TODAY Southeast to south winds near 5 knots, becoming northwest late. Seas 1 foot or less. Nearshore waters smooth. Patchy fog developing late. TONIGHT North to northeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Patchy fog. Isolated showers. SUNDAY North to northeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers. SUNDAY NIGHT Northeast winds increasing to 10 to 15 knots. Seas building to 1 to 2 feet. Nearshore waters becoming a light to moderate chop. Isolated showers. MONDAY Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Isolated showers. MONDAY NIGHT Northeast to east winds 10 to 15 knots, increasing to near 15 knots. Seas 1 to 2 feet, building to 2 to 3 feet west of the Marquesas Keys. Nearshore waters a light to moderate chop, becoming a moderate chop. Isolated showers. TUESDAY AND TUESDAY NIGHT Northeast to east winds near 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a moderate chop. Isolated showers. WEDNESDAY AND WEDNESDAY NIGHT East winds near 15 knots. Seas 1 to 2 feet, except around 3 feet west of the Marquesas Keys. Nearshore waters a moderate chop. Isolated showers. $$
GMZ032-035-010000- 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- 648 AM EST Sat Feb 28 2026 TODAY Southeast to south winds near 5 knots, becoming northwest late. Seas 1 foot or less. Nearshore waters smooth. Patchy fog developing late. TONIGHT North to northeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Patchy fog. Isolated showers. SUNDAY North to northeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers. SUNDAY NIGHT Northeast winds increasing to 10 to 15 knots. Seas building to 1 to 2 feet. Nearshore waters becoming a light to moderate 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 10 to 15 knots, increasing to near 15 knots. Seas 1 to 2 feet, building to 2 to 3 feet west of the Marquesas Keys. Nearshore waters a light to moderate chop, becoming a moderate chop. Isolated showers. TUESDAY AND TUESDAY NIGHT Northeast to east winds near 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a moderate chop. Isolated showers. WEDNESDAY AND WEDNESDAY NIGHT East winds near 15 knots. Seas 1 to 2 feet, except around 3 feet west of the Marquesas Keys. Nearshore waters a moderate chop. Isolated showers. $$