Area Forecast Discussion
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FXUS62 KKEY 150319

Area Forecast Discussion
National Weather Service Key West FL
1019 PM EST Thu Dec 14 2017

Under clear skies with a light and sometimes variable breeze,
temperatures along the Keys island chain are falling to and just
below the 60 degree mark. There are no echoes on the KBYX Doppler
radar late this evening.

The local evening sounding indicates the continuation of a dry
airmass in place. Winds through about 5000 feet are light and
variable. An axis of high pressure extends across the Keys and
surrounding waters. Looking at the current temperatures along the
island chain, some locations are slightly above the readings at
this time yesterday evening, and some are slightly below. However,
most locations have higher dewpoints. We expect another seasonably
cool overnight period, but a few degrees above last night. A few
locations in the interior of larger islands have been addressed,
where radiational cooling could have a more noticeable effect. No
zone update is planned for this evening.


The coastal waters update will have only small adjustments to the
initial wind conditions in several of the marine groupings. But
winds are light regardless. Aside from the cool temperatures,
conditions should be relatively pleasant for recreational boating
around the Florida Keys in the near term.


VFR conditions are expected at the KEYW and KMTH terminals
overnight and Friday, with light winds that could occasionally vary
in direction.


On this date in 1871, 2.40 inches of rain was measured in Key
West. This set the daily rainfall record for December fourteenth
in the city. This is a long-standing record, since 1871 was the
first year for rainfall records in Key West.





Data Collection......L. Kasper

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