Area Forecast Discussion
Issued by NWS Knoxville/Tri Cities, TN

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000 FXUS64 KMRX 201505 AAB AFDMRX Area Forecast Discussion...UPDATED National Weather Service Morristown TN 1105 AM EDT Thu Apr 20 2017 .DISCUSSION... Lingering morning showers across upper east Tennessee and southwest Virginia are quickly dissipating late in the morning. In their wake, the cloud cover over that area should continue to erode, resulting in at least partly sunny conditions there by the early afternoon. Elsewhere to the south and west, mostly clear conditions have allowed temperatures to warm quickly into the lower to mid 70s as of 15z. This area over the Plateau and Central/Southern Valleys may be the focus for some locally stronger storms later on this afternoon (thanks to a more destabilized environment there). Model progs continue to hint at MLCAPE values around 700-800 J/kg in a low shear environment. Due to the lack of forcing, am not expecting much storm organization -- though some orographic lift along the Plateau and Mountains may help concentrate the stronger activity. Lightning, small hail and brief gusty winds will be the main threat, with this activity dying off around 00-01z. && .PRELIMINARY POINT TEMPS/POPS... Chattanooga Airport, TN 83 62 83 62 / 30 20 60 50 Knoxville McGhee Tyson Airport, TN 83 62 80 61 / 30 20 60 50 Oak Ridge, TN 84 61 79 61 / 30 30 60 60 Tri Cities Airport, TN 79 58 77 57 / 50 30 70 60 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...None. TN...None. VA...None. && $$ AMP

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