Mesoscale Discussion 0181
   NWS Storm Prediction Center Norman OK
   1101 AM CDT Sat Mar 14 2020

   Areas affected...east-central Illinois...central
   Indiana...west-central Ohio

   Concerning...Winter mixed precipitation 

   Valid 141601Z - 141800Z

   SUMMARY...A narrow band of heavy snow and/or sleet has developed
   from east-central Illinois into west-central Ohio. It will likely
   continue into the early afternoon.

   DISCUSSION...Warm-air advection across the Midwest and Ohio Valley
   is occurring ahead of an upper-level shortwave trough. Isentropic
   lifting is resulting in precipitation across the region including
   snow and winter mixed preciptiation. Heavy precipitation rates and
   near/sub-freezing wet bulb temperatures have resulted in recent
   heavy snow and sleet reports from central Illinois into central
   Indiana. This narrow corridor at the nexus of the warm conveyor belt
   will continue to produce heavy snow/sleet for the next couple of
   hours before the stronger warm air advection wanes and moves
   eastward. Heavy snow/sleet may continue for longer into portions of
   west-central Ohio this afternoon.

   ..Nauslar/Grams.. 03/14/2020

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

   ATTN...WFO...ILN...IWX...IND...LOT...ILX...

   LAT...LON   39468425 39648596 39828917 40058960 40518924 40788827
               40798647 40698531 40598400 40298309 39658343 39468425