Mesoscale Discussion 1701
   NWS Storm Prediction Center Norman OK
   0536 PM CDT Fri Aug 19 2022

   Areas affected...much of Iowa...northern Missouri

   Concerning...Severe Thunderstorm Watch 521...

   Valid 192236Z - 200030Z

   The severe weather threat for Severe Thunderstorm Watch 521
   continues.

   SUMMARY...Scattered storms may continue to pose a hail and localized
   damaging-wind threat. Isolated severe storms could impact areas just
   east of WW 521 later this evening.

   DISCUSSION...Radar shows numerous storms and associated outflow
   boundaries across much of IA, ahead of the primary front which
   extends from southeast MN into eastern NE. Both right and
   left-moving cells have been noted with periodic severe hail cores
   and strong wind gusts. Recently, new activity has developed ahead of
   the central-IA outflow, and additional severe storms may thus
   affects parts of eastern IA, and perhaps cross the MS River later
   this evening. Objective analysis shows an MLCAPE maximum over
   eastern IA. Therefore, despite rampant outflow boundary production
   and loss of heating, temperatures aloft remain cool and may support
   at least isolated severe cells east of WW 521. A new watch is not
   currently anticipated.

   ..Jewell.. 08/19/2022

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

   ATTN...WFO...MPX...FSD...

   LAT...LON   44439652 44699578 44429474 43849454 43529522 44129679
               44439652