Mesoscale Discussion 1179
   NWS Storm Prediction Center Norman OK
   0901 PM CDT Fri Jul 10 2020

   Areas affected...North-Central SD

   Concerning...Severe Thunderstorm Watch 352...

   Valid 110201Z - 110330Z

   The severe weather threat for Severe Thunderstorm Watch 352
   continues.

   SUMMARY...Isolated severe thunderstorms will linger across
   north-central South Dakota the next few hours.

   DISCUSSION...Northern Plains short-wave trough is topping the
   western US upper ridge and is now beginning to dig southeast across
   the Dakotas. Exit region of a mid-level jet appears partly
   responsible for ongoing convection across this region. A few severe
   storms with hail have progressed along the ND/SD border E-NE of MBG.
   This activity is turning more southerly as low-level convergence is
   refocusing farther south in advance of the short wave. Latest radar
   data suggests this convection will move along a weak boundary that
   is oriented across Edmunds into northern Spink County. While these
   storms will likely exit the eastern edge of ww352, it's not entirely
   clear how far east these storms will remain severe. For these
   reasons a new ww is not currently expected.

   ..Darrow.. 07/11/2020

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

   ATTN...WFO...ABR...BIS...

   LAT...LON   46189927 44869810 44429928 45530037 46189927