Area Forecast Discussion
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FXUS62 KKEY 230331

Area Forecast Discussion
National Weather Service Key West FL
1031 PM EST Mon Jan 22 2018

Plenty of chaff on KBYX Doppler radar this evening, but there are
a few legitimate light showers lingering on the edges of that
large field to the north of the Keys. Those legitimate echoes are
moving slowly north/northwestward in the Gulf waters. Otherwise,
skies are partly cloudy over the island chain with a gentle to
occasionally moderate east/southeast breeze in place. Temperatures
are in the lower 70s.

(NOTE: KBYX Doppler radar has been behaving erratically this
evening, with significant fluctuations in power noticed over the
past few hours. Although the product suite has not dropped out,
a degradation of some products has become evident. A technician
has been notified.)

The evening local sounding showed a veered and seasonably moist
profile, but not quite as moist as twelve hours ago. We can expect
a few showers to work through the weak resistance to convection at
low levels. But, the recently updated zone forecast had the
probability of measurable rain trimmed to only a slight chance
through the overnight period. Cloud cover should increase
overnight, and temperatures should not move very far from their
present readings. Winds will be gentle to very briefly moderate
from the east southeast overnight.


A gentle to occasionally moderate east to southeast breeze is
expected through the overnight period. The recently updated
coastal waters forecast adjusted winds accordingly for most
locations, and maintained scattered showers over the offshore Gulf
waters. Isolated showers were advertised elsewhere overnight.


VFR conditions will prevail at EYW and MTH. Some lower and
middle level moisture will bring in cloud decks at multiple levels.
Ceilings will generally be VFR, but a few pockets of MVFR ceilings
will be possible toward dawn. Surface winds will be out of the east
near 10 knots and gradually decrease throughout the overnight period
to between 5 to 10 knots.





Data Collection......Chesser

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