Hazardous marine condition(s):
Short Term Forecast
GMZ005-141430-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1027 PM EDT Sun Jul 13 2025
.SYNOPSIS...Shower coverage is forecast to gradually increase
overnight as additional moisture is directed across the CWA. Weak
low pressure tries to develop in the vicinity of Florida heading
through the first half of the week. Initially, the Keys will be on
the southern fringe in a col region resulting in mainly variable
breezes through Monday night. As the weak low pressure area shifts
to the west and high pressure builds in behind, breezes will
freshen becoming southeast to south at first, before becoming east
to southeast for mid to late week. Also, expect increasing
coverage of showers and thunderstorms for the early to middle part
of the week.
The Approximate Shoreward Edge of the Gulf Stream as of July 8...
14 NM South of Dry Tortugas Light...on Loggerhead Key.
5 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
4 NM South of Sand Key Light...off Key West.
4 NM South of Looe Key...off Big Pine Key.
5 NM Southeast of Sombrero Key Light...off Marathon.
6 NM Southeast of Alligator Reef Light...off Islamorada.
3 NM Southeast of Molasses Reef Light...off Key Largo.
4 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>044-141430- 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- 1027 PM EDT Sun Jul 13 2025 OVERNIGHT Variable winds 5 to 10 knots, decreasing to near 5 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop, becoming smooth. Scattered showers and isolated thunderstorms. MONDAY Variable winds near 5 knots, becoming northwest to north in the afternoon. Seas 1 foot or less. Nearshore waters smooth. Winds and seas higher in and around numerous showers and scattered thunderstorms. MONDAY NIGHT Northwest to north 5 to 10 knots, becoming variable and decreasing to near 5 knots after midnight. Seas 1 foot or less. Nearshore waters smooth to a light chop, becoming smooth. Numerous showers and scattered thunderstorms. TUESDAY South winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. Numerous showers and scattered thunderstorms. TUESDAY NIGHT Southeast to south winds 5 to 10 knots, 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. Scattered showers and thunderstorms. WEDNESDAY Southeast to south winds 10 to 15 knots, becoming southeast and decreasing to 5 to 10 knots. Seas around 2 feet, subsiding to 1 to 2 feet. Nearshore waters a light to moderate chop, becoming smooth to a light chop. Scattered showers and thunderstorms. WEDNESDAY NIGHT East to southeast winds near 10 knots, increasing to 10 to 15 knots. Seas around 2 feet, building to 2 to 3 feet. Nearshore waters a light chop, becoming a light to moderate chop. Scattered showers and isolated thunderstorms. THURSDAY Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. Scattered showers and isolated thunderstorms. THURSDAY NIGHT East to southeast winds 10 to 15 knots, increasing to near 15 knots. Seas 2 to 3 feet, building to around 3 feet. Nearshore waters a light to moderate chop, becoming a moderate chop. Scattered showers and isolated thunderstorms. FRIDAY AND FRIDAY NIGHT East to southeast winds near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters a moderate chop. Scattered showers and isolated thunderstorms. $$
GMZ042>044-141430- 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- 1027 PM EDT Sun Jul 13 2025 OVERNIGHT Variable winds 5 to 10 knots, decreasing to near 5 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop, becoming smooth. Scattered showers and isolated thunderstorms. MONDAY Variable winds near 5 knots, becoming northwest to north in the afternoon. Seas 1 foot or less. Nearshore waters smooth. Winds and seas higher in and around numerous showers and scattered thunderstorms. MONDAY NIGHT Northwest to north 5 to 10 knots, becoming variable and decreasing to near 5 knots after midnight. Seas 1 foot or less. Nearshore waters smooth to a light chop, becoming smooth. Numerous showers and scattered thunderstorms. TUESDAY South winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. Numerous showers and scattered thunderstorms. TUESDAY NIGHT Southeast to south winds 5 to 10 knots, 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. Scattered showers and thunderstorms. WEDNESDAY Southeast to south winds 10 to 15 knots, becoming southeast and decreasing to 5 to 10 knots. Seas around 2 feet, subsiding to 1 to 2 feet. Nearshore waters a light to moderate chop, becoming smooth to a light chop. Scattered showers and thunderstorms. WEDNESDAY NIGHT East to southeast winds near 10 knots, increasing to 10 to 15 knots. Seas around 2 feet, building to 2 to 3 feet. Nearshore waters a light chop, becoming a light to moderate chop. Scattered showers and isolated thunderstorms. THURSDAY Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop. Scattered showers and isolated thunderstorms. THURSDAY NIGHT East to southeast winds 10 to 15 knots, increasing to near 15 knots. Seas 2 to 3 feet, building to around 3 feet. Nearshore waters a light to moderate chop, becoming a moderate chop. Scattered showers and isolated thunderstorms. FRIDAY AND FRIDAY NIGHT East to southeast winds near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Nearshore waters a moderate chop. Scattered showers and isolated thunderstorms. $$