GMZ005-141430-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1023 PM EDT Sun Sep 13 2026
.SYNOPSIS...
A weak pressure pattern has resulted in light and varying
breezes. Breezes will gradually firm up out of the northeast to
east over the next few days, as a continental high builds
southward towards our area. Low level moisture will remain
abundant through tomorrow morning and keep convective potential
above normal. Rain chances should fall to near normal early in the
week as drier lower levels filter in. The ridge will be
reinforced through the first half of the week, resulting in
freshening northeast to easterly breezes.
The Approximate Shoreward Edge of the Gulf Stream as of September
11, 2026...
26 NM south of Dry Tortugas Light, on Loggerhead Key
15 NM south of Cosgrove Shoal Light, off the Marquesas Keys
15 NM south of Sand Key Light, off Key West
11 NM south-southeast of Looe Key, off Big Pine Key
8 NM southeast of Sombrero Key Light, off Marathon
6 NM southeast of Alligator Reef Light, off Islamorada
2 NM southeast of Molasses Reef Light, off Key Largo
1 NM east-southeast of Carysfort Reef Light, off Ocean Reef
Gulf Stream Information Courtesy of the National Weather Service in
Key West, using data from RTOFS and NASA SPoRT SST.
$$
GMZ033-034-141430- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 1023 PM EDT Sun Sep 13 2026 OVERNIGHT Variable winds near 5 knots, becoming northeast to east. Seas 1 foot or less. A chance of showers and thunderstorms. MONDAY Northeast to east winds near 5 knots. Seas 1 foot or less. A chance of showers and thunderstorms. MONDAY NIGHT Northeast to east winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northeast to east 1 foot at 2 seconds. Showers likely with a chance of thunderstorms. TUESDAY East winds near 10 knots. Seas around 1 foot. Showers likely with a chance of thunderstorms. TUESDAY NIGHT Northeast to east winds near 10 knots, increasing to near 15 knots. Seas 1 to 2 feet, building to 2 to 3 feet. Showers likely with a chance of thunderstorms. WEDNESDAY Northeast to east winds 10 to 15 knots. Seas 2 to 3 feet. Showers likely with a chance of thunderstorms. WEDNESDAY NIGHT Northeast to east winds near 15 knots. Seas building to 2 to 4 feet, occasionally to 5 feet. Showers and thunderstorms likely. THURSDAY East winds 10 to 15 knots. Seas 2 to 3 feet. Showers and thunderstorms likely. THURSDAY NIGHT East winds 10 to 15 knots. Seas 2 to 3 feet. Showers likely with a chance of thunderstorms. FRIDAY East to southeast winds near 10 knots, decreasing to 5 to 10 knots. Seas around 2 feet, subsiding to 1 to 2 feet. Showers likely with a chance of thunderstorms. FRIDAY NIGHT East to southeast winds 5 to 10 knots. Seas around 1 foot. Showers likely with a chance of thunderstorms. $$
GMZ033-034-141430- Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of America including Dry Tortugas and Rebecca Shoal Channel- 1023 PM EDT Sun Sep 13 2026 OVERNIGHT Variable winds near 5 knots, becoming northeast to east. Seas 1 foot or less. A chance of showers and thunderstorms. MONDAY Northeast to east winds near 5 knots. Seas 1 foot or less. A chance of showers and thunderstorms. MONDAY NIGHT Northeast to east winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northeast to east 1 foot at 2 seconds. Showers likely with a chance of thunderstorms. TUESDAY East winds near 10 knots. Seas around 1 foot. Showers likely with a chance of thunderstorms. TUESDAY NIGHT Northeast to east winds near 10 knots, increasing to near 15 knots. Seas 1 to 2 feet, building to 2 to 3 feet. Showers likely with a chance of thunderstorms. WEDNESDAY Northeast to east winds 10 to 15 knots. Seas 2 to 3 feet. Showers likely with a chance of thunderstorms. WEDNESDAY NIGHT Northeast to east winds near 15 knots. Seas building to 2 to 4 feet, occasionally to 5 feet. Showers and thunderstorms likely. THURSDAY East winds 10 to 15 knots. Seas 2 to 3 feet. Showers and thunderstorms likely. THURSDAY NIGHT East winds 10 to 15 knots. Seas 2 to 3 feet. Showers likely with a chance of thunderstorms. FRIDAY East to southeast winds near 10 knots, decreasing to 5 to 10 knots. Seas around 2 feet, subsiding to 1 to 2 feet. Showers likely with a chance of thunderstorms. FRIDAY NIGHT East to southeast winds 5 to 10 knots. Seas around 1 foot. Showers likely with a chance of thunderstorms. $$