GMZ005-110945-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
436 PM EST Tue Nov 10 2026
.SYNOPSIS...
High pressure will gradually track through the southeastern U.S.
and will move into the Bahamas and western North Atlantic over the
next couple of days. This will allow for east to southeast
breezes to undergo a slow slackening process through Wednesday
night. Thereafter, a strong cold front will steadily march towards
the Keys and is expected to push through the Keys marine zones on
Friday morning. As a result, breezes will gradually clock around
the compass and freshen Thursday through Friday morning. A period
of fresh to strong breezes is possible Friday night into Saturday
morning before briefly slackening. A reinforcing front on Sunday
will bring back the potential for a prolonged period of fresh to
strong breezes.
The Approximate Shoreward Edge of the Gulf Stream as of November 8,
2026...
30 NM south of Dry Tortugas Light, on Loggerhead Key
38 NM south of Cosgrove Shoal Light, off the Marquesas Keys
46 NM south of Sand Key Light, off Key West
20 NM south of Looe Key, off Big Pine Key
15 NM southeast of Sombrero Key Light, off Marathon
10 NM south of Alligator Reef Light, off Islamorada
8 NM southeast of Molasses Reef Light, off Key Largo
5 NM east 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.
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