Mesoscale Discussion 0236
   NWS Storm Prediction Center Norman OK
   0343 AM CDT Fri Mar 27 2020

   Areas affected...Far East-Central MO...Southern IL...Far Southwest
   IN

   Concerning...Severe Thunderstorm Watch 63...

   Valid 270843Z - 271015Z

   The severe weather threat for Severe Thunderstorm Watch 63
   continues.

   SUMMARY...Threat for severe hail will continue across southern IL
   into far southwest IN for the next few hours.

   DISCUSSION...Radar signatures within the pair of supercells moving
   through the northern portions of the St. Louis area continue to show
   characteristics of severe hail. Given the favorable deep-layer shear
   in place, these organized storms are expected to persist eastward
   for the next hour or two. Some gradual decreases in intensity is
   anticipated as the low-level jet slowly weakens. 

   Additional storm development has occurred ahead of these supercells
   across central portions of southern IL. These storms developed
   quickly as low/mid-level moisture advection weaken convective
   inhibition enough for parcels to reach their LFCs. As with the
   storms farther west, some hail is possible over the next or two.
   However, longevity of the severe threat will be tempered by a
   weakening low-level jet. Short duration of the threat combined with
   limit spatial extent will preclude the need for watch.

   ..Mosier.. 03/27/2020

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

   ATTN...WFO...LMK...IND...PAH...ILX...LSX...

   LAT...LON   38689100 39119060 39278863 39098679 38588664 38398794
               38398946 38409036 38689100