GMZ005-030230-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1027 AM EDT Thu Oct 2 2025
.SYNOPSIS...High pressure is slowly moving across the eastern
U.S., which will maintain a northeast wind across our waters
today. This high will begin moving into the western North Atlantic
later today and into the overnight and gradually build. This will
lead to freshening northeast to east breezes into Friday evening.
Winds will then briefly clock around towards the southeast for
the upcoming weekend and return from the east early next week.
Another period of moderate to fresh breezes is possible starting
Monday night.
The Approximate Shoreward Edge of the Gulf Stream as of October
01...
42 NM South of Dry Tortugas Light...on Loggerhead Key.
33 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
33 NM South of Sand Key Light...off Key West.
35 NM South of Looe Key...off Big Pine Key.
16 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.
5 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.
$$
GMZ032-035-030230- Bayside and Gulfside from Craig Key to west end of Seven Mile Bridge- Gulf of America from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- 1027 AM EDT Thu Oct 2 2025 THIS AFTERNOON Northeast to east winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. Scattered showers and isolated thunderstorms. TONIGHT Northeast winds near 10 knots, increasing to 10 to 15 knots. Seas around 1 foot, building to 1 to 2 feet. Nearshore waters a light chop, becoming a light to moderate chop. Scattered showers and isolated thunderstorms. FRIDAY Northeast to east winds near 15 knots. Seas building to 1 to 3 feet. Nearshore waters a moderate chop. Scattered showers and isolated thunderstorms. FRIDAY NIGHT Northeast to east winds 15 to 20 knots, decreasing to near 15 knots. Seas 2 to 3 feet. Nearshore waters choppy, becoming a moderate chop. Scattered showers and isolated thunderstorms. SATURDAY East to southeast winds decreasing to 10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters becoming a light to moderate chop. Scattered showers and isolated thunderstorms. SATURDAY NIGHT Southeast winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Scattered showers and isolated thunderstorms. SUNDAY Southeast winds near 10 knots. Seas subsiding to around 1 foot. Nearshore waters a light chop. Scattered showers and isolated thunderstorms. SUNDAY NIGHT East to southeast winds 10 to 15 knots. Seas building to 1 to 2 feet. Nearshore waters a light to moderate chop. Scattered showers and isolated thunderstorms. MONDAY East winds increasing to near 15 knots. Seas 1 to 2 feet. Nearshore waters becoming a moderate chop. Scattered showers and isolated thunderstorms. MONDAY NIGHT East winds increasing to 15 to 20 knots. Seas building to 2 to 3 feet, except 3 to 4 feet west of the Marquesas Keys. Nearshore waters becoming choppy. Scattered showers and isolated thunderstorms. $$
GMZ032-035-030230- Bayside and Gulfside from Craig Key to west end of Seven Mile Bridge- Gulf of America from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- 1027 AM EDT Thu Oct 2 2025 THIS AFTERNOON Northeast to east winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. Scattered showers and isolated thunderstorms. TONIGHT Northeast winds near 10 knots, increasing to 10 to 15 knots. Seas around 1 foot, building to 1 to 2 feet. Nearshore waters a light chop, becoming a light to moderate chop. Scattered showers and isolated thunderstorms. FRIDAY Northeast to east winds near 15 knots. Seas building to 1 to 3 feet. Nearshore waters a moderate chop. Scattered showers and isolated thunderstorms. FRIDAY NIGHT Northeast to east winds 15 to 20 knots, decreasing to near 15 knots. Seas 2 to 3 feet. Nearshore waters choppy, becoming a moderate chop. Scattered showers and isolated thunderstorms. SATURDAY East to southeast winds decreasing to 10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters becoming a light to moderate chop. Scattered showers and isolated thunderstorms. SATURDAY NIGHT Southeast winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to moderate chop. Scattered showers and isolated thunderstorms. SUNDAY Southeast winds near 10 knots. Seas subsiding to around 1 foot. Nearshore waters a light chop. Scattered showers and isolated thunderstorms. SUNDAY NIGHT East to southeast winds 10 to 15 knots. Seas building to 1 to 2 feet. Nearshore waters a light to moderate chop. Scattered showers and isolated thunderstorms. MONDAY East winds increasing to near 15 knots. Seas 1 to 2 feet. Nearshore waters becoming a moderate chop. Scattered showers and isolated thunderstorms. MONDAY NIGHT East winds increasing to 15 to 20 knots. Seas building to 2 to 3 feet, except 3 to 4 feet west of the Marquesas Keys. Nearshore waters becoming choppy. Scattered showers and isolated thunderstorms. $$