GMZ005-010345-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1031 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 later today. 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.
$$
GMZ042>044-010345- Hawk Channel from Ocean Reef to Craig Key out to the reef- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- 1031 AM EST Sat Feb 28 2026 THIS AFTERNOON Southeast to south winds 5 to 10 knots, becoming variable late. Seas around 1 foot. Nearshore waters a smooth to a light chop. TONIGHT North to northeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. Isolated showers. SUNDAY Northeast winds 5 to 10 knots, increasing to near 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop, becoming a light chop. Isolated showers. SUNDAY NIGHT Northeast winds near 10 knots, increasing to near 15 knot. Seas building to 1 to 2 feet. Nearshore waters a light chop, becoming a moderate chop. Isolated showers. MONDAY Northeast to east winds near 15 knots. Seas 2 to 3 feet. Nearshore waters a moderate chop. Isolated showers. MONDAY NIGHT Northeast to east winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters choppy. Isolated showers. TUESDAY AND TUESDAY NIGHT Northeast to east winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters choppy. Isolated showers. WEDNESDAY East winds near 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Nearshore waters a moderate chop. Isolated showers. WEDNESDAY NIGHT East winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Nearshore waters choppy. Isolated showers. $$
GMZ042>044-010345- Hawk Channel from Ocean Reef to Craig Key out to the reef- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- 1031 AM EST Sat Feb 28 2026 THIS AFTERNOON Southeast to south winds 5 to 10 knots, becoming variable late. Seas around 1 foot. Nearshore waters a smooth to a light chop. TONIGHT North to northeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. Isolated showers. SUNDAY Northeast winds 5 to 10 knots, increasing to near 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop, becoming a light chop. Isolated showers. SUNDAY NIGHT Northeast winds near 10 knots, increasing to near 15 knot. Seas building to 1 to 2 feet. Nearshore waters a light chop, becoming a moderate chop. Isolated showers. MONDAY Northeast to east winds near 15 knots. Seas 2 to 3 feet. Nearshore waters a moderate chop. Isolated showers. MONDAY NIGHT Northeast to east winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters choppy. Isolated showers. TUESDAY AND TUESDAY NIGHT Northeast to east winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters choppy. Isolated showers. WEDNESDAY East winds near 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Nearshore waters a moderate chop. Isolated showers. WEDNESDAY NIGHT East winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Nearshore waters choppy. Isolated showers. $$