Area Forecast Discussion
Issued by NWS Louisville, KY

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FXUS63 KLMK 201746

Area Forecast Discussion
National Weather Service Louisville KY
1246 PM EST Mon Nov 20 2017

...Updated Aviation Discussion...

.Short Term...(Today through Tuesday)
Issued at 253 AM EST Mon Nov 20 2017

High pressure centered near Nashville this morning will advance to
the Carolina coast by this evening and then off the coast tonight.
This will result in a southerly breeze today and tonight. This in
addition to a good amount of sunshine filtered through patchy,
mostly thin, cirrus will allow temperatures to peak around 50
degrees this afternoon after a chilly start to the day. Tonight most
spots should remain just above freezing with the exception of the
usual sheltered cool spots.

On Tuesday low pressure near James Bay will pull a trailing cold
front into the Ohio Valley by evening. It still looks like
precipitation associated with this front will remain just to our
northeast. Clouds will increase by late in the day over southern
Indiana and the Blue Grass, still. High temperatures will be in the

.Long Term...(Tuesday night through Sunday)
Issued at 304 AM EST Mon Nov 20 2017

The cold front stretched out along the Ohio River at the end of the
short term will proceed into the Appalachians at the start of the
long term. A stray sprinkle isn`t entirely out of the question in
the northern Blue Grass Tuesday evening, but most of the
precipitation will be to our northeast.

Canadian high pressure will then cross the central and eastern
United States Wednesday through Friday, giving us dry and cool
weather for the holiday.

Friday night and Saturday morning a weakening cold front will push
through Indiana and Kentucky, but once again precipitation
associated with it should stay to our northeast.

Saturday night and Sunday another Canadian high will dive into the


.Aviation...(18Z TAF Issuance)
Issued at 1245 PM EST Mon Nov 20 2017

VFR weather is expected throughout this TAF period, along with dry
weather and only scattered high clouds at times. A 7-10 kt southerly
breeze is expected this afternoon, diminishing slightly this evening
around sunset. But after 04z tonight, expect SSW winds to pick up
once again as the pressure gradient tightens. A 35-40 kt southwest
low-level jet will develop over the Ohio Valley at 2-3 kft. Late
tonight through Tuesday morning, expect SSW surface winds to
increase into the 10-15 kt range. After sunrise Tuesday, gusts to 19-
24 kts will become common.




Short Term...13
Long Term...13
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