Mesoscale Discussion 1304
   NWS Storm Prediction Center Norman OK
   0236 PM CDT Tue Jul 21 2020

   Areas affected...east-central IN into west-central OH

   Concerning...Severe Thunderstorm Watch 391...

   Valid 211936Z - 212030Z

   The severe weather threat for Severe Thunderstorm Watch 391
   continues.

   SUMMARY...Strong gusts may continue into parts of east-central IN
   and west-central OH this afternoon. However, the severe threat
   should diminish with eastward extent and a downstream watch is not
   currently expected.

   DISCUSSION...The bow echo that moved across central IN early this
   afternoon has been showing signs of weakening recently. The
   downstream airmass is slightly less favorable for maintenance of
   severe convection, with some weakness in midlevel lapse rates and
   instability noted in 19z mesoanalysis. Additionally, effective shear
   wanes across OH, further reducing chances for sustained, organized
   updrafts. Radar reflectivity trends have diminished on 5 and 7 km
   CAPPI and velocity signatures are not nearly as strong. KGUS
   recorded a 50 kt gust within the past 30 minutes, and 40-50 kt gusts
   over the next hour seem reasonable as the gradual weakening trend
   continues.

   ..Leitman.. 07/21/2020

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

   ATTN...WFO...ILN...IWX...IND...

   LAT...LON   40848600 40998532 40978482 40938451 40748415 40368426
               40148450 39908535 39968620 40848600