Mesoscale Discussion 0835
   NWS Storm Prediction Center Norman OK
   0357 PM CDT Mon May 27 2019

   Areas affected...portions of northern and central IL into northern
   and central IN and extreme southwest MI

   Concerning...Tornado Watch 263...

   Valid 272057Z - 272230Z

   The severe weather threat for Tornado Watch 263 continues.

   SUMMARY...A threat for supercells capable of tornadoes, large hail
   and damaging wind gusts will continue across WW 263.

   DISCUSSION...Several storms across northern portions of WFO ILX are
   now exhibiting stronger low level rotation with at least one tornado
   reported in Knox CO IL around 3pm and several others further west in
   eastern IA across WFO DVN's area. Additional storms have developed
   in the vicinity of the warm front, with the most notable cell being
   a supercell that move across southern portions of Chicago, resulting
   in 2 inch hail and damaging wind. Additional storms development is
   expected across the warm sector across northeast IL into northwest
   IN the next few hours. Regional VWP data continues to show favorable
   shear for supercells, with curved low level hodographs indicative of
   a continued tornado threat. 

   As the warm front draped across northern IN into west-central OH
   continues to live northward, a downstream watch will likely be
   needed later this afternoon/early evening.

   ..Leitman.. 05/27/2019

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

   ATTN...WFO...IWX...GRR...IND...LOT...ILX...LSX...DVN...

   LAT...LON   39788845 39798875 40199151 40599172 41159172 41599137
               42029090 42189031 42238622 42068576 41758566 40658544
               40388544 39958558 39868669 39788845 39788845