Storm Prediction Center Mesoscale Discussion 2015

   Mesoscale Discussion 2015
   NWS Storm Prediction Center Norman OK
   0449 PM CDT Mon Aug 17 2026

   Areas affected...Eastern Tennessee into Western North Carolina

   Concerning...Severe Thunderstorm Watch 590...

   Valid 172149Z - 172345Z

   The severe weather threat for Severe Thunderstorm Watch 590
   continues.

   SUMMARY...The threat for damaging winds will continue over the next
   few hours as storms cluster across the area.

   DISCUSSION...The development of numerous storms in a moist, unstable
   environment in the lee of the Appalachians have slowly clustered and
   grown upscale this afternoon.  Within a modestly favorable low-level
   westerly shear environment (i.e., 0-3 km shear around 20-25 knots
   per mesoanalysis and local VWPs), continued upscale growth and
   organization is likely over the next few hours.  As such, the threat
   for damaging winds will persist as multiple clusters progress
   eastward toward the higher terrain.

   ..Jirak.. 08/17/2026

   ...Please see www.spc.noaa.gov for graphic product...

   ATTN...WFO...RNK...GSP...MRX...FFC...

   LAT...LON   35058544 35468475 35818397 36248316 36498231 36528187
               36408154 36118147 35778174 35398223 35028285 34858357
               34938437 34908468 35058544 

   MOST PROBABLE PEAK WIND GUST...55-70 MPH