Area Forecast Discussion
Issued by NWS Jackson, KY

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880
FXUS63 KJKL 221931
AFDJKL

AREA FORECAST DISCUSSION
National Weather Service Jackson KY
331 PM EDT Fri Sep 22 2017

.SHORT TERM...(This evening through Saturday night)
Issued at 331 PM EDT FRI SEP 22 2017

Available shortly...

.LONG TERM...(Sunday through Friday)
Issued at 331 PM EDT FRI SEP 22 2017

A surface high pressure and upper level high will remain in
control of the sensible weather for much of the long range period.
However, the upper level high will begin breaking down as we move
toward midweek. Then a cold front will approach the Ohio Valley
but the upper level ridging will still be in place. This will
likely aid in mitigating much if any precipitation By Thursday,
with isolated showers possible mainly far southeast. The other
issue in seeing precipitation will be the attendant low pressure
will be northeast of Maine by late Wednesday. Despite model
divergence by the end of the week, we do stand the chance of
seeing some much cooler air filter into the region behind this
cold front. This could lead to a 15 to 20 degree lowering of
afternoon high temperatures by Friday.

&&

.AVIATION...(For the 18Z TAFS through 18Z Saturday afternoon)
ISSUED AT 216 PM EDT FRI SEP 22 2017

We are in a stable weather pattern where each day will be similar
to the one before/after. That being said, afternoon CU field will
dissipate as sunset approaches. Overnight fog will develop once
again. Overall each night has seen slight improvements in
conditions from the previous, exception being the river valley
locations. Our more elevated terminals, JKL and LOZ should
continue to see a gradual improvement from night to night. SYM
seems to be more prone to the effects of local valley fog when it
is dense enough, similar to SJS. Considering the pattern, tended
to stay closer to persistence for CIGS and VSBYS. It was nice to
see model guidance close to that line of thinking, adding at least
a little confidence to the effects of overnight fog. Went with
some LIFR VSBYS at SYM and SJS. SJS was the only site to pick up
LIFR CIGS. Expect JKL and LOZ to remain in VFR territory for the
most part. Winds will in general be light and variable through the
period.

&&

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

$$

SHORT TERM...RAY
LONG TERM...DJ
AVIATION...RAY



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