GMZ005-160830-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
419 PM EDT Tue Jul 15 2025
.SYNOPSIS...As a weak low pressure shifts off to the west and
into the Gulf, high pressure will build in behind it strengthening
the pressure gradient. This will lead to gentle to moderate
breezes tonight. High pressure remains anchored over the central
Atlantic with its western periphery extending into the Keys
through the weekend with gentle to moderate east to southeast
breezes continuing, occasionally becoming moderate to fresh.
The Approximate Shoreward Edge of the Gulf Stream as of July 15...
18 NM South of Dry Tortugas Light...on Loggerhead Key.
3 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
1 NM South of Sand Key Light...off Key West.
4 NM South of Looe Key...off Big Pine Key.
4 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.
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.
$$
GMZ042>044-160830- 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- 419 PM EDT Tue Jul 15 2025 TONIGHT Variable winds 5 to 10 knots early, becoming southeast and increasing to 10 to 15 knots after midnight. Seas around 1 foot, building to 1 to 2 feet. Nearshore waters smooth to a light chop, becoming a light to moderate chop. Numerous showers and scattered thunderstorms. WEDNESDAY Southeast winds near 15 knots, decreasing to near 10 knots. Seas around 2 feet, subsiding to 1 to 2 feet. Nearshore waters a moderate chop, becoming a light chop. Numerous showers and scattered thunderstorms. WEDNESDAY NIGHT East to southeast winds 10 to 15 knots, increasing to near 15 knots. Seas around 2 feet, building to 2 to 3 feet. Nearshore waters a light to moderate chop, becoming a moderate chop. Scattered showers and isolated thunderstorms. THURSDAY East to southeast winds near 15 knots. Seas around 3 feet. Nearshore waters a moderate chop. Scattered showers and isolated thunderstorms. THURSDAY NIGHT East to southeast winds near 15 knots, increasing to 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters a moderate chop, becoming choppy. Scattered showers and isolated thunderstorms. FRIDAY East to southeast winds 15 to 20 knots, decreasing to near 15 knots. Seas 3 to 4 feet, occasionally to 5 feet, subsiding to 2 to 4 feet, occasionally to 5 feet. Nearshore waters choppy, becoming a moderate chop. Scattered showers and isolated thunderstorms. FRIDAY NIGHT East winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. Isolated showers and thunderstorms. SATURDAY East winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. Isolated showers and thunderstorms. SATURDAY NIGHT East winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. Isolated showers and thunderstorms. SUNDAY East winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. Scattered showers and isolated thunderstorms. SUNDAY NIGHT East winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. Scattered showers and isolated thunderstorms. $$
GMZ042>044-160830- 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- 419 PM EDT Tue Jul 15 2025 TONIGHT Variable winds 5 to 10 knots early, becoming southeast and increasing to 10 to 15 knots after midnight. Seas around 1 foot, building to 1 to 2 feet. Nearshore waters smooth to a light chop, becoming a light to moderate chop. Numerous showers and scattered thunderstorms. WEDNESDAY Southeast winds near 15 knots, decreasing to near 10 knots. Seas around 2 feet, subsiding to 1 to 2 feet. Nearshore waters a moderate chop, becoming a light chop. Numerous showers and scattered thunderstorms. WEDNESDAY NIGHT East to southeast winds 10 to 15 knots, increasing to near 15 knots. Seas around 2 feet, building to 2 to 3 feet. Nearshore waters a light to moderate chop, becoming a moderate chop. Scattered showers and isolated thunderstorms. THURSDAY East to southeast winds near 15 knots. Seas around 3 feet. Nearshore waters a moderate chop. Scattered showers and isolated thunderstorms. THURSDAY NIGHT East to southeast winds near 15 knots, increasing to 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters a moderate chop, becoming choppy. Scattered showers and isolated thunderstorms. FRIDAY East to southeast winds 15 to 20 knots, decreasing to near 15 knots. Seas 3 to 4 feet, occasionally to 5 feet, subsiding to 2 to 4 feet, occasionally to 5 feet. Nearshore waters choppy, becoming a moderate chop. Scattered showers and isolated thunderstorms. FRIDAY NIGHT East winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. Isolated showers and thunderstorms. SATURDAY East winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. Isolated showers and thunderstorms. SATURDAY NIGHT East winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. Isolated showers and thunderstorms. SUNDAY East winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. Scattered showers and isolated thunderstorms. SUNDAY NIGHT East winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. Scattered showers and isolated thunderstorms. $$