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Mesoscale Discussion 1179
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   Mesoscale Discussion 1179
   NWS Storm Prediction Center Norman OK
   0839 PM CDT Wed Jun 28 2017

   Areas affected...Southern IA...Northern MO

   Concerning...Tornado Watch 375...

   Valid 290139Z - 290315Z

   The severe weather threat for Tornado Watch 375 continues.

   SUMMARY...Severe threat remains bimodal across Tornado Watch 375
   with the southern-most threat now concentrated along the IA/MO
   border.

   DISCUSSION...East-west MCS has evolved along the IA/MO border over
   the last few hours and this activity is only slowly sagging south
   across the southern-most portion of WW375. Short-range models
   suggest a veered LLJ will feed this activity and decoupling may
   actually encourage new development along the western flank of this
   MCS. If a sufficient cold pool can evolve the MCS may sag into
   Livingston/Linn/Macon Counties MO. These counties may be added to
   Tornado Watch 375 but the greatest severe risk is actually large
   hail and heavy rain.

   ..Darrow.. 06/29/2017

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

   ATTN...WFO...LSX...DVN...DMX...EAX...OAX...

   LAT...LON   40689541 40849406 40529190 39879223 39999424 40069568
               40689541 

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Page last modified: June 29, 2017
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