Mesoscale Discussion 0973
   NWS Storm Prediction Center Norman OK
   0540 AM CDT Mon May 30 2022

   Areas affected...Western IA...Far East-Central NE

   Concerning...Severe Thunderstorm Watch 290...

   Valid 301040Z - 301215Z

   The severe weather threat for Severe Thunderstorm Watch 290
   continues.

   SUMMARY...There is a threat for isolated hail across western IA and
   far east-central NE for the next few hours.

   DISCUSSION...A north-south oriented band of thunderstorms recently
   developed along the northern edge of the slightly better low to
   mid-level moisture return. The steep mid-level lapse rates in place
   support moderate buoyancy, evidenced by the presence of several
   strong updrafts within the band. A southward-moving outflow boundary
   may interact with this northward-moving band, leading to some
   uncertainty regarding the overall duration and convective evolution
   of these storms. Even so, given the moderate buoyancy and modest
   deep-layer vertical shear, a few instances of severe hail are
   possible within this band for the next hour or two.

   ..Mosier.. 05/30/2022

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

   ATTN...WFO...DMX...FSD...OAX...

   LAT...LON   41409648 42799593 43439537 43389412 42819395 40989488
               40549623 41409648