Area Forecast Discussion
Issued by NWS Louisville, KY

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FXUS63 KLMK 231033

Area Forecast Discussion
National Weather Service Louisville KY
633 AM EDT Sat Sep 23 2017

...Updated Aviation Discussion...

.Short Term...(Today through Sunday)
Issued at 300 AM EDT Sat Sep 23 2017

Quiet weather continues early this morning with just a few cirrus
passing over central KY from northeast to southwest. Patchy fog has
developed, particularly near rivers and in other fog prone
locations. Visibility may be limited to around 2 miles in a few of
these spots this morning, but dense fog shouldn`t be an issue. The
fog will burn off quickly after sunrise.

Ridging at the surface and aloft will persist across the Ohio Valley
and Great Lakes regions today. We`ll see some drying through the
column today into tonight as well. Satellite measurements reveal a
precipitable water minimum over Pennsylvania, with northeast flow
bringing this drier air down the Appalachians and into
eastern/central Kentucky. Other than scattered cirrus at times,
expect sunny skies today and clear skies tonight. Highs today will
reach the upper 80s to lower 90s.

The mid-level ridge becomes centered over PA on Sunday as an upper
level trough over the Deep South retrogrades westward. As the flow
aloft becomes more southeasterly Sunday, PWAT gradient over TN
shifts north into KY. Can`t rule out a rogue thunderstorm Sunday
afternoon, particularly across the southwestern forecast area.
Precipitable water in Bowling Green will likely climb to around 1.6
inches. Most places will stay dry, with highs in the 85-90 degree

.Long Term...(Sunday night through Friday)
Issued at 305 AM EDT Sat Sep 23 2017

Hot and dry weather will continue through Tuesday as eastern CONUS
ridging persists. Afternoon highs will again push well into the 80s
to around 90 degrees in some areas. This pattern finally breaks down
Wednesday. Low pressure moving northeast through Canada will drag a
cold front through the Ohio Valley, resulting in much cooler
temperatures Thursday into next weekend. We likely won`t see much
rain with this front, however, due to limited moisture. Highs
Thursday and Friday should be back down in the low to mid 70s. Lows
down into the 50s will be common by Friday morning as well.


.Aviation...(12Z TAF Issuance)
Issued at 630 AM EDT Sat Sep 23 2017

HNB/BWG have gone down in visibility early this morning, and LEX may
join them soon, as they are dropping as well. Conditions should
improve quickly with sunrise, and high pressure in control of our
weather will bring light easterly winds and dry weather through the




Short Term...EBW
Long Term...EBW
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