GMZ005-172130-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
426 AM EST Mon Nov 17 2025
.SYNOPSIS...Weak high pressure will continue to promote light to
gentle breezes across the Florida Keys coastal waters today. Due
to the weak flow, there may be a period of variable breezes this
afternoon. Another high pressure system currently over the Midwest
U.S. will continue to drift eastward through Tuesday while slowly
strengthening. This will promote freshening northeast to east
breezes for mid week. This high will continue moving into the
western North Atlantic elongating and maintaining strength as it
does so. This will allow for continued moderate to fresh breezes
through late week.
The Approximate Shoreward Edge of the Gulf Stream as of November 14...
54 NM South of Dry Tortugas Light...on Loggerhead Key.
23 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
19 NM South of Sand Key Light...off Key West.
17 NM South of Looe Key...off Big Pine Key.
15 NM Southeast of Sombrero Key Light...off Marathon.
4 NM Southeast of Alligator Reef Light...off Islamorada.
1 NM Southeast of Molasses Reef Light...off Key Largo.
1 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.
$$
GMZ042>044-172130- Hawk Channel from Ocean Reef to Craig Key out to the reef- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- 426 AM EST Mon Nov 17 2025 TODAY Northwest to north winds 5 to 10 knots, becoming northeast in the afternoon. Seas around 1 foot. Nearshore waters smooth to a light chop. TONIGHT Northeast to east winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. TUESDAY Northeast to east winds near 10 knots, increasing to 10 to 15 knots. Seas around 1 foot, building to 1 to 2 feet. Nearshore waters a light chop, becoming a light to moderate chop. TUESDAY NIGHT Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet, except building to 2 to 3 feet west of Cosgrove Shoal Light. Nearshore waters a light to moderate chop. WEDNESDAY Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of Cosgrove Shoal Light. Nearshore waters a light to moderate chop. WEDNESDAY NIGHT Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of Cosgrove Shoal Light. Nearshore waters a light to moderate chop. THURSDAY Northeast to east winds near 15 knots. Seas 2 to 3 feet. Nearshore waters a moderate chop. THURSDAY NIGHT THROUGH FRIDAY NIGHT East winds near 15 knots. Seas around 3 feet. Nearshore waters a moderate chop. $$
GMZ042>044-172130- 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- 426 AM EST Mon Nov 17 2025 TODAY Northwest to north winds 5 to 10 knots, becoming northeast in the afternoon. Seas around 1 foot. Nearshore waters smooth to a light chop. TONIGHT Northeast to east winds 5 to 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop. TUESDAY Northeast to east 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. TUESDAY NIGHT Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet, except building to 2 to 3 feet west of Cosgrove Shoal Light. Nearshore waters a light to moderate chop. WEDNESDAY Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of Cosgrove Shoal Light. Nearshore waters a light to moderate chop. WEDNESDAY NIGHT Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of Cosgrove Shoal Light. Nearshore waters a light to moderate chop. THURSDAY Northeast to east winds near 15 knots. Seas 2 to 3 feet. Nearshore waters a moderate chop. THURSDAY NIGHT THROUGH FRIDAY NIGHT East winds near 15 knots. Seas around 3 feet. Nearshore waters a moderate chop. $$