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Mesoscale Discussion 858
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   Mesoscale Discussion 0858
   NWS Storm Prediction Center Norman OK
   0330 PM CDT Sat May 21 2022

   Areas affected...Portions of eastern IN...northern KY...much of
   OH...western PA...and the far northern WV Panhandle

   Concerning...Severe Thunderstorm Watch 254...255...

   Valid 212030Z - 212200Z

   The severe weather threat for Severe Thunderstorm Watch 254, 255
   continues.

   SUMMARY...Scattered severe/damaging winds and isolated large hail
   will continue to be possible with multiple clusters of thunderstorms
   this afternoon.

   DISCUSSION...The bowing cluster across southeastern IN has recently
   shown strong outbound velocities from the KIND radar, and multiple
   measured severe wind gusts of 58 and 67 mph respectively. Additional
   clusters of thunderstorms are present across western into central
   OH. All of this activity will continue to pose a threat for
   severe/damaging winds, as moderate to strong instability is present
   where convection is ongoing. Isolated large hail will also be
   possible with the strongest embedded cores. Current expectations are
   for this activity to spread generally east-northeastward across
   northern KY, much of OH, and eventually western PA over the next
   couple of hours. 0-1 km SRH is limited (around 50-100 m2/s2) owing
   to the weak low-level flow, but a brief tornado may still be
   possible with circulations embedded within the clusters.

   ..Gleason.. 05/21/2022

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

   ATTN...WFO...PBZ...RLX...CLE...JKL...ILN...LMK...IWX...IND...

   LAT...LON   37968670 38388623 38978594 39688603 41118390 42247985
               40697974 38578275 38128402 37908509 37968670 

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