Mesoscale Discussion 0300
   NWS Storm Prediction Center Norman OK
   0722 PM CDT Tue Apr 07 2020

   Areas affected...Southern Lake Michigan vicinity and northern
   Illinois into east central Iowa

   Concerning...Severe Thunderstorm Watch 82...

   Valid 080022Z - 080145Z

   The severe weather threat for Severe Thunderstorm Watch 82
   continues.

   SUMMARY...Scattered severe storms capable of producing large to very
   large hail and locally strong surface gusts are expected to linger
   into the 9-11 PM CDT time frame, gradually spreading southward into
   the Interstate 80 corridor.

   DISCUSSION...Large-scale forcing for ascent to support further
   upscale convective growth is unclear.  However, scattered vigorous
   discrete storms, including isolated supercells, are ongoing, and are
   likely to continue at least another few hours.  This appears focused
   near the leading edge of cooling around the 700 mb level, which is
   forecast to continue gradually spreading southward across the
   Interstate 80 through 02-04Z. 

   Strongest cells have already occasionally produced 2-3 inch hail,
   and, even with the onset of diurnal boundary layer cooling,
   thermodynamic profiles should remain favorable for a continuing risk
   of large to very large hail, in the presence of strong deep layer
   shear.  There also could be at least some increase in potential for
   localized strong surface gusts, before activity begins to wane later
   this evening.

   ..Kerr.. 04/08/2020

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

   ATTN...WFO...IWX...LOT...ILX...DVN...

   LAT...LON   41879196 42428995 42478798 41978680 41338676 40959001
               41329171 41879196