Mesoscale Discussion 0820
   NWS Storm Prediction Center Norman OK
   0341 PM CDT Thu Jun 04 2020

   Areas affected...Northern/Central VA...Western/Central
   MD...Central/Eastern PA...Eastern WV Panhandle

   Concerning...Severe Thunderstorm Watch 250...

   Valid 042041Z - 042215Z

   The severe weather threat for Severe Thunderstorm Watch 250
   continues.

   SUMMARY...Threat for hail and damaging wind gusts will persist for
   the next few hours.

   DISCUSSION...Predominantly cellular storms have develop across
   central PA, with numerous storm splits observed. Straight hodograph
   depicted by recent KPBZ VAD data suggests an environment favorable
   for splitting cells, which matches the observations well. While many
   of the cells are shallow and disorganized, cells in Juniata/Perry,
   Dauphin, and Franklin counties appear to be supercellular and moving
   to the right of the mean wind. Threat for hail and damaging wind
   gusts will continue from central PA into eastern PA over the next
   few hours.

   Farther south along the higher terrain of western MD and eastern VA,
   a more outflow-dominant storm mode has been noted thus far. Updrafts
   have struggled to maintain intensity as they develop along these
   outflow. Slightly better updraft organization and longer maintenance
   has begun over, and in the vicinity of, the eastern WV Panhandle
   where better vertical shear exists. Threat for hail and damaging
   wind gusts will also persist over this area for the next few hours.

   ..Mosier.. 06/04/2020

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

   ATTN...WFO...PHI...BGM...AKQ...CTP...LWX...RNK...PBZ...RLX...

   LAT...LON   40347910 41447793 41197617 38817674 37657907 38557970
               40347910