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Mesoscale Discussion 163
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   Mesoscale Discussion 0163
   NWS Storm Prediction Center Norman OK
   0855 PM CST Wed Feb 08 2017

   Areas affected...Eastern TN...northeast AL...northwest GA

   Concerning...Severe Thunderstorm Watch 31...

   Valid 090255Z - 090400Z

   The severe weather threat for Severe Thunderstorm Watch 31

   SUMMARY...Severe threat appears to be decreasing across ww31.  New
   watch is not anticipated.

   DISCUSSION...Band of frontal convection has struggled to organize
   and produce meaningful severe this evening.  While marginally severe
   hail has been noted in some of the stronger updrafts, lapse rates do
   not support particularly large hail given the observed
   moisture/instability.  Current broken line of storms is progressing
   east-southeast across the eastern part of the watch at roughly 30kt
   and aside from locally strong wind gusts it appears this activity
   should remain mostly sub-severe the rest of tonight.  New ww is not

   ..Darrow.. 02/09/2017


   LAT...LON   33978836 36358706 36368309 33968452 33978836 

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