Mesoscale Discussion 0967
   NWS Storm Prediction Center Norman OK
   1248 PM CDT Mon Jun 22 2020

   Areas affected...much of Illinois and surrounding areas

   Concerning...Severe potential...Watch possible 

   Valid 221748Z - 222015Z

   Probability of Watch Issuance...60 percent

   SUMMARY...Storms will increase in number through the afternoon, with
   localized damaging wind gusts or marginally severe hail.

   DISCUSSION...Surface analysis shows a low over eastern IA, ahead of
   the midlevel trough. Heating continues over much of the region, with
   the strongest instability south of a diffuse temperature gradient
   from northern into central IL and eastern MO.

   Winds aloft are not particularly strong, but ample instability,
   increasing lift and no convective inhibition should lead to
   scattered and possibly numerous storms throughout the rest of the
   afternoon. Precipitable water in excess of 1.50" along with
   steepening lapse rates should support localized severe downbursts,
   along with marginally severe hail in the strongest cores. Storms
   will be focused along the diffuse front over IL, and may increase
   along the cold front developing later today out of IA and MO.

   ..Jewell/Guyer.. 06/22/2020

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

   ATTN...WFO...IWX...IND...LOT...ILX...LSX...DVN...

   LAT...LON   39308986 39189100 39289163 40009175 41568988 42438847
               42508755 42398709 42118676 41088684 40458739 39698865
               39308986