Mesoscale Discussion 0899
   NWS Storm Prediction Center Norman OK
   1258 PM CDT Wed Jun 10 2020

   Areas affected...western and central Ohio into northern Kentucky

   Concerning...Severe potential...Watch likely 

   Valid 101758Z - 101930Z

   Probability of Watch Issuance...95 percent

   SUMMARY...A new Severe Thunderstorm Watch downstream of WW275 will
   likely be issued within the next hour. Severe thunderstorms capable
   of damaging wind gusts, isolated large hail, and a tornado or two
   will be likely through this afternoon.

   DISCUSSION...A broken line of thunderstorms over central Indiana has
   produced several reports of damaging winds over the last few hours.
   These storms are ongoing in a very moist environment (surface
   dewpoints in the low to mid 70s F) ahead of a pressure trough/wind
   shift emanating from a 983 mb cyclone over southern Ontario.
   1500-2000 J/kg of MLCAPE, and 35-45 kt of effective shear as sampled
   by SPC mesoanalysis will support robust organized updrafts in the
   form of small bowing segments and supercells. Damaging winds will
   primarily be the main threat with the increase in storm coverage and
   interactions favoring strong downdrafts. However, the magnitude of
   instability/buoyancy will support some risk for isolated large hail
   with the strongest updrafts. Hodographs are expected to be
   relatively long but low-level flow is expected veer with time
   supporting the threat for one or two tornadoes given 0-1 km shear of
   15-20 kt. A new Severe thunderstorm Watch will be needed within the
   next hour.

   ..Lyons/Thompson.. 06/10/2020

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

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

   LAT...LON   38588362 38398438 38378477 38618517 39278531 40988426
               41588381 41648364 41568290 41628214 41738178 41818152
               41758140 39808209 39468230 38828298 38588362