Area Forecast Discussion
Issued by NWS Jackson, KY

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000 FXUS63 KJKL 201936 AFDJKL AREA FORECAST DISCUSSION National Weather Service Jackson KY 336 PM EDT Fri Apr 20 2018 .SHORT TERM...
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(This evening through Saturday night) Issued at 336 PM EDT FRI APR 20 2018 Available shortly... .LONG TERM...(Sunday through Friday) Issued at 336 PM EDT FRI APR 20 2018 A upper level ridge axis will still be extending across the Ohio and Tennessee Valleys Sunday. This will help slow the progression of rain showers activity northward and still may be too quick on the progression northward overall. Did opt to adjust from what the blended data provided for Sunday, but tried to remain match up with the neighboring offices. The NAM is the wetter outlier this afternoon for Sunday into Sunday night and this could be some influence in the blended data. This southern stream upper level low will remain the culprit for unsettled weather across the Ohio and Tennessee Valleys through much of the period. This southern stream system will eventually phase with a northern stream upper level wave, but the guidance diverges greatly at this point on the depth and forward progression of the northern stream feature. This leads to a low confidence forecast from midweek onward. The slight to chance POPs provided by the blended guidance seems reasonable at this point and therefore little changes were made to the forecast for this period. In general, the temperatures through the long term will remain near normal for this time of year.
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&& .AVIATION...(For the 18Z TAFS through 18Z Saturday afternoon) ISSUED AT 157 PM EDT FRI APR 20 2018 High pressure will keep mostly clear skies in place, with winds averaging around 5 kts or less out of the northeast through the period. && .JKL WATCHES/WARNINGS/ADVISORIES...
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Frost Advisory from midnight tonight to 9 AM EDT Saturday for KYZ044-050>052-058>060-068-069-079-080-083>088-104-106>120.
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&& $$ SHORT TERM...GEOGERIAN LONG TERM...DJ AVIATION...GEOGERIAN

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