Hazardous marine condition(s):
Hazardous Weather Outlook
GMZ005-261430-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
428 AM EDT Wed Mar 26 2025
.SYNOPSIS...High pressure over the southeastern United States will
build southeastward into the Keys today and tonight resulting in
winds picking up modestly and broadly out of northeast. Isolated
thunderstorms are possible this afternoon in the Upper Keys, due
to seabreeze activity drifting southward off the mainland. Through
the remainder of the week, the high cell will strengthen as it
pushes eastward into the Atlantic. This will lead to freshening
easterly breezes. Small Craft Advisories will almost certainly be
required, beginning as early as Thursday and lasting well into the
weekend.
The Approximate Shoreward Edge of the Gulf Stream as of March 23...
71 NM South of Dry Tortugas Light...on Loggerhead Key.
42 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
29 NM South of Sand Key Light...off Key West.
21 NM South of Looe Key...off Big Pine Key.
22 NM South of Sombrero Key Light...off Marathon.
19 NM Southeast of Alligator Reef Light...off Islamorada.
20 NM Southeast of Molasses Reef Light...off Key Largo.
13 NM East of Carysfort Reef Light...off Ocean Reef.
Gulf Stream Information Courtesy of the National Weather Service
in Key West and based on products from NASA SPoRT.
$$
GMZ031-261430- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- 428 AM EDT Wed Mar 26 2025 TODAY North winds 5 to 10 knots, becoming east near 10 knots this afternoon. Bay waters smooth to a light chop, becoming a light chop. Isolated showers and thunderstorms this afternoon. TONIGHT Northeast winds increasing to near 15 knots. Bay waters becoming a moderate chop. THURSDAY Northeast to east winds 15 to 20 knots. Bay waters choppy. THURSDAY NIGHT Northeast to east winds near 20 knots. Bay waters rough. FRIDAY East winds 20 to 25 knots. Bay waters very rough. FRIDAY NIGHT East winds 20 to 25 knots. Bay waters very rough. Scattered showers. SATURDAY East to southeast winds near 20 knots, decreasing to 15 to 20 knots. Bay waters rough, becoming choppy. Scattered showers. SATURDAY NIGHT East to southeast winds 15 to 20 knots. Bay waters choppy. Scattered showers. SUNDAY East to southeast winds near 15 knots. Bay waters a moderate chop. Scattered showers. SUNDAY NIGHT East to southeast winds decreasing to 10 to 15 knots. Bay waters becoming a light to moderate chop. Scattered showers. $$
GMZ031-261430- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- 428 AM EDT Wed Mar 26 2025 TODAY North winds 5 to 10 knots, becoming east near 10 knots this afternoon. Bay waters smooth to a light chop, becoming a light chop. Isolated showers and thunderstorms this afternoon. TONIGHT Northeast winds increasing to near 15 knots. Bay waters becoming a moderate chop. THURSDAY Northeast to east winds 15 to 20 knots. Bay waters choppy. THURSDAY NIGHT Northeast to east winds near 20 knots. Bay waters rough. FRIDAY East winds 20 to 25 knots. Bay waters very rough. FRIDAY NIGHT East winds 20 to 25 knots. Bay waters very rough. Scattered showers. SATURDAY East to southeast winds near 20 knots, decreasing to 15 to 20 knots. Bay waters rough, becoming choppy. Scattered showers. SATURDAY NIGHT East to southeast winds 15 to 20 knots. Bay waters choppy. Scattered showers. SUNDAY East to southeast winds near 15 knots. Bay waters a moderate chop. Scattered showers. SUNDAY NIGHT East to southeast winds decreasing to 10 to 15 knots. Bay waters becoming a light to moderate chop. Scattered showers. $$