Area Forecast Discussion
Issued by NWS Jackson, KY

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FXUS63 KJKL 222000
AFDJKL

AREA FORECAST DISCUSSION
National Weather Service Jackson KY
300 PM EST Wed Nov 22 2017

.SHORT TERM...(This evening through Thursday night)
Issued at 300 PM EST WED NOV 22 2017

Nothing but cool and dry weather in the forecast in the short
term. A strong ridge of high pressure will remain in place across
the region through the end of the week and beyond. Mostly clear
skies, light winds, and dry conditions will be on tap across
eastern Kentucky. The weather feature of note in the short term
will be ridge valley temperature differences tonight and tomorrow
night. The more well defined split should occur tonight, with
valleys bottoming out in the lower 20s, with the surrounding
ridges coming it in the mid 20s. A split will occur to some degree
Thursday night, but should not be quite as well defined as
tonights as some warming will occur during the day on Thursday.

.LONG TERM...(Thursday night through Tuesday)
Issued at 332 AM EST WED NOV 22 2017

The long wave pattern will be amplified through the period across
the CONUS. Ridging will remain in control across the Desert
Southwest, with troughing in the East, as well as across the
Pacific Northwest. Early next week, the Pacific Northwest long
wave trough will pull onshore, eventually crossing the Rockies and
into the Plains by next Tuesday. This will shunt the ridging off
to the east, maintaining an extended period of mainly dry weather
across the Ohio and Tennessee valleys.

Thursday night will start out with high pressure gradually
shifting to our east, allowing for another cold night in the
decoupled valleys. Have undercut the blended guidance, with some
lower 20s likely in the far eastern sheltered sites. A cold
front will move through the Ohio Valley Friday through Saturday.
Any shower activity, looks to stay just to our north, closer to
the better moisture pooling and forcing. Temperatures will average
near normal across our area, with highs generally in the mid 50s.
Another cool down will follow this front, with highs back in the
40s by Sunday. Warming will then ensue once again, as heights
recover into early next week. Highs on Monday will be in the lower
50s, with upper 50s to near 60 by Tuesday.

&&

.AVIATION...(For the 18Z TAFS through 18Z Thursday afternoon)
ISSUED AT 1227 PM EST WED NOV 22 2017

VFR conditions are expected to prevail at the TAF sites through
the end of the TAF period. SCT to BKN low level clouds will
persist across the area through early this evening before finally
scattering out and dissipating. Mostly clear skies and light winds
will be on tap tonight through the end of the period.

&&

.JKL WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

$$

SHORT TERM...AR
LONG TERM...GEOGERIAN
AVIATION...AR


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