Mesoscale Discussion 0317
   NWS Storm Prediction Center Norman OK
   0552 PM CDT Wed Apr 08 2020

   Areas affected...central and southern Indiana...southwest
   Ohio...central Kentucky

   Concerning...Severe potential...Watch likely 

   Valid 082252Z - 090115Z

   Probability of Watch Issuance...95 percent

   SUMMARY...Damaging storms, including significant straight-line
   winds, a few tornadoes and large hail are likely to develop over the
   next several hours.

   DISCUSSION...Steep lapse rates precede a cold front rapidly moving
   across IL, with a dryline extending into southern MO. Meanwhile, a
   low-level moisture gradient currently extends east roughly along the
   OH River, with 60s F into far southern IN. Meanwhile, a residual
   outflow boundary remains over eastern KY.

   Substantial pressure falls currently exist over IL and IN, with
   storms increasing in coverage over IL and MO. Some of these storms
   have been severe, despite meager moisture over IL. Recently, a
   supercell over southeast MO has become much more severe as it
   encountered the moist air mass.

   Large-scale lift will increase through evening as the front moves
   into IN, KY, and OH. Cold temperatures aloft will maximize updraft
   strength, with a significant line of severe storms likely, along
   with some supercells. These storms, whether straight-line winds or
   with tornadoes, will be capable of damage. The most probable area of
   tornadoes appears to be near or just ahead of the developing line,
   along the OH River, where pressure falls will be maximized along the
   moisture return, and where locally-backed winds will enhance SRH
   after 03Z.

   ..Jewell/Hart.. 04/08/2020

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

   ATTN...WFO...RLX...JKL...ILN...LMK...IWX...IND...PAH...ILX...

   LAT...LON   40408740 40368589 40208404 39638291 38988282 38368310
               37948366 36968449 36678491 36698650 36768698 37228712
               38318763 38958773 39828768 40278751 40408740