Hazardous marine condition(s):
Short Term Forecast
GMZ005-050245-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1035 AM EDT Mon May 4 2026
.SYNOPSIS...The coastal waters surrounding the Florida Keys remain
in a chaotic state as a weak frontal boundary lingers nearby. This
is creating gentle northerly breezes across the western waters
with light and variable winds elsewhere. Additional rounds of
convection are possible this afternoon, especially across the
Straits of Florida. The stronger showers and thunderstorms will
be capable of strong gusty winds, locally higher seas, at times
frequent lightning strikes, and blinding downpours. The active
pattern will gradually calm down over the next 24 hours. Winds
will then shift north to northeast as the boundary starts washing
out across the Florida Straits. Winds will remain light and
varying tomorrow into tomorrow night due to the lingering remnant
boundary. By mid week the western flank of a broad Atlantic Ridge
will move across Florida and establish a more normal light to
gentle east to southeasterly flow.
The Approximate Shoreward Edge of the Gulf Stream as of April 28...
16 NM South of Dry Tortugas Light...on Loggerhead Key.
10 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
9 NM South of Sand Key Light...off Key West.
9 NM South of Looe Key...off Big Pine Key.
12 NM Southeast of Sombrero Key Light...off Marathon.
10 NM Southeast of Alligator Reef Light...off Islamorada.
6 NM Southeast of Molasses Reef Light...off Key Largo.
6 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.
$$
GMZ042>044-050245- Hawk Channel from Ocean Reef to Craig Key out to the reef- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- 1035 AM EDT Mon May 4 2026 THIS AFTERNOON North to northeast winds 5 to 10 knots. Seas 1 to 2 feet. Nearshore waters smooth to a light chop. A chance of showers with a slight chance of thunderstorms. TONIGHT Northeast winds 5 to 10 knots, decreasing to near 5 knots after midnight. Seas 1 to 2 feet. Nearshore waters smooth to a light chop, becoming smooth. A chance of showers with a slight chance of thunderstorms. TUESDAY Variable winds near 5 knots, becoming southwest to west 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth, becoming smooth to a light chop. A slight chance of showers and thunderstorms. TUESDAY NIGHT Variable winds near 5 knots. Seas around 1 foot. Nearshore waters smooth. A slight chance of showers. WEDNESDAY East to southeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. WEDNESDAY NIGHT East to southeast winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. THURSDAY Southeast to south winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. THURSDAY NIGHT East to southeast winds near 5 knots. Seas around 1 foot. Nearshore waters smooth. FRIDAY Southeast winds near 5 knots. Seas around 1 foot. Nearshore waters smooth. FRIDAY NIGHT East to southeast winds near 5 knots. Seas around 1 foot. Nearshore waters smooth. $$
GMZ042>044-050245- 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- 1035 AM EDT Mon May 4 2026 THIS AFTERNOON North to northeast winds 5 to 10 knots. Seas 1 to 2 feet. Nearshore waters smooth to a light chop. A chance of showers with a slight chance of thunderstorms. TONIGHT Northeast winds 5 to 10 knots, decreasing to near 5 knots after midnight. Seas 1 to 2 feet. Nearshore waters smooth to a light chop, becoming smooth. A chance of showers with a slight chance of thunderstorms. TUESDAY Variable winds near 5 knots, becoming southwest to west 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth, becoming smooth to a light chop. A slight chance of showers and thunderstorms. TUESDAY NIGHT Variable winds near 5 knots. Seas around 1 foot. Nearshore waters smooth. A slight chance of showers. WEDNESDAY East to southeast winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. WEDNESDAY NIGHT East to southeast winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. THURSDAY Southeast to south winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. THURSDAY NIGHT East to southeast winds near 5 knots. Seas around 1 foot. Nearshore waters smooth. FRIDAY Southeast winds near 5 knots. Seas around 1 foot. Nearshore waters smooth. FRIDAY NIGHT East to southeast winds near 5 knots. Seas around 1 foot. Nearshore waters smooth. $$