Mesoscale Discussion 0256
   NWS Storm Prediction Center Norman OK
   0521 PM CDT Sat Mar 28 2020

   Areas affected...Eastern IA...Northeast MO...Northwest IL

   Concerning...Tornado Watch 69...

   Valid 282221Z - 282345Z

   The severe weather threat for Tornado Watch 69 continues.

   SUMMARY...Severe threat may increase across ww69 over the next few
   hours.

   DISCUSSION...Partial clearing is noted across much of eastern IA
   into northwestern IL ahead of the leading wind shift where
   substantial boundary-layer drying is now taking place. As a result,
   low-level lapse rates are steepening across this portion of the warm
   sector which should aid buoyancy over areas that have struggled to
   destabilize through late afternoon. Latest satellite imagery
   suggests an agitated cu field extends from northeast MO into
   southeast IA which may ultimately evolve into deeper updrafts and
   eventual supercell activity. If thunderstorms develop within this
   zone, tornado threat would necessarily increase as well.

   ..Darrow.. 03/28/2020

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

   ATTN...WFO...ILX...LSX...DVN...ARX...DMX...

   LAT...LON   40259207 41669255 42679287 42699139 40838933 39909065
               40259207