GMZ005-211530-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1024 PM EST Tue Jan 20 2026
.SYNOPSIS...An expansive high pressure system will continue to
move across the eastern United States over the next several days,
leading to a strengthening pressure gradient. This will support
bouts of fresh to strong breezes throughout the work week. The
high will move out into the western North Atlantic by late week
while weakening. This will support slackening breezes for Friday
night and Saturday.
The Approximate Shoreward Edge of the Gulf Stream as of January
18...
18 NM South of Dry Tortugas Light...on Loggerhead Key.
16 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
15 NM South of Sand Key Light...off Key West.
13 NM South of Looe Key...off Big Pine Key.
13 NM Southeast of Sombrero Key Light...off Marathon.
12 NM Southeast of Alligator Reef Light...off Islamorada.
7 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 and RTOFS.
$$
GMZ052>055-072>075-211530-
Straits of Florida from Ocean Reef to Craig Key out 20 NM-
Straits of Florida from Craig Key to west end of Seven Mile
Bridge out 20 NM-
Straits of Florida from west end of Seven Mile Bridge to south of
Halfmoon Shoal out 20 NM-
Straits of Florida from Halfmoon Shoal to 20 NM west of Dry
Tortugas out 20 NM-
Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out-
Straits of Florida from Craig Key to west end of Seven Mile
Bridge 20 to 60 NM out-
Straits of Florida from west end of Seven Mile Bridge to south of
Halfmoon Shoal 20 to 60 NM out-
Straits of Florida from Halfmoon Shoal to 20 NM west of Dry
Tortugas 20 to 60 NM out-
1024 PM EST Tue Jan 20 2026
SMALL CRAFT ADVISORY IN EFFECT
OVERNIGHT
Northeast winds near 25 knots. Seas 6 to 10 feet,
occasionally to 12 feet. Wave Detail: Northeast 9 feet at 8
seconds. Isolated showers.
WEDNESDAY
Northeast to east winds 20 to 25 knots, decreasing to
near 20 knots. Seas 6 to 10 feet, occasionally to 12 feet. Wave
Detail: Northeast to east 9 feet at 8 seconds. Scattered showers.
WEDNESDAY NIGHT
Northeast to east winds near 20 knots,
decreasing to 15 to 20 knots. Seas 6 to 8 feet, occasionally to
10 feet, subsiding to 4 to 7 feet, occasionally to 9 feet. Wave
Detail: Northeast to east 8 feet at 8 seconds. Scattered showers.
THURSDAY
Northeast to east winds 15 to 20 knots, decreasing to
10 to 15 knots. Seas 4 to 6 feet, occasionally to 8 feet,
subsiding to 3 to 5 feet, occasionally to 6 feet. Scattered
showers.
THURSDAY NIGHT
Northeast to east winds 10 to 15 knots. Seas
2 to 4 feet, occasionally to 5 feet. Scattered showers.
FRIDAY
East winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Isolated showers.
FRIDAY NIGHT AND SATURDAY
East winds 10 to 15 knots. Seas 2 to
4 feet, occasionally to 5 feet. Isolated showers.
SATURDAY NIGHT
East to southeast winds 10 to 15 knots. Seas
2 to 4 feet, occasionally to 5 feet. Isolated showers.
SUNDAY
Southeast to south winds near 10 knots, becoming
southwest to west. Seas subsiding to 1 to 2 feet. Isolated
showers.
SUNDAY NIGHT
West to northwest winds 10 to 15 knots, becoming
northwest to north. Seas around 1 foot. Isolated showers.
$$
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