Area Forecast Discussion
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FXUS62 KKEY 191534

Area Forecast Discussion
National Weather Service Key West FL
1034 AM EST Fri Jan 19 2018

Currently - After a subtle morning cold air drainage surge off of
South Florida, winds have relaxed. High pressure spreading into
the extreme southeastern United States is generating a gentle to
moderate northeast background flow, with the highest winds over
the Florida Straits. Very stable conditions persists with a nearly
dissipated very low level nocturnal inversion and a subsidence
inversion around 900 mb and significant dry air aloft. Skies are
variable due to swathes of cirrus streaming northeastward.

Short Term Update - As South Florida warms and the high continues
to spread southeastward, winds will try to shift northeast and
east northeast. However, our cool gulf and bay side waters, near
60 in the shallows, will keep winds over the island chain more
backed. Expect day time temperatures the push into the upper 60s
with dew points moving into the mid 50s. Rain chances will remain
zero today under variable skies, but tending mostly cloudy. No
changes anticipated for the local forecast.


High pressure spreading southeast and eastward across Florida and
the southeastern United States will maintain moderate breezes
across Keys Waters. Winds will tend weaker and more backed
northeast over our cool gulf and bay side waters, while they will
become more east northeast and higher over the Florida Straits. A
caution remains in effect for the Florida Straits. Changes made to
first period winds in the morning marine update. Over the next
couple of days the high pressure to our north will elongate
eastwards into the Atlantic. This will keep Keys waters on the
edge of the higher wind belt on the ridges southern periphery.
This along with the cooler waters will keep winds strongest on the
Florida Straits, and weaker over the cooler northern waters.


Rest of today, VFR conditions will prevail at both the KEYW and
KMTH Int`l terminals. Surface winds will average from 050 degrees
around 9-12 knots.





Data Collection......KN

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