Storm Prediction Center Mesoscale Discussion 627

   Mesoscale Discussion 0627
   NWS Storm Prediction Center Norman OK
   0653 PM CDT Wed Apr 30 2025

   Areas affected...Parts of southeast Illinois into southern Indiana

   Concerning...Tornado Watch 200...

   Valid 302353Z - 010100Z

   The severe weather threat for Tornado Watch 200 continues.

   SUMMARY...A locally favorable tornado corridor is evident from parts
   of southeastern Illinois into southern Indiana in the near-term --
   within Tornado Watch 200.

   DISCUSSION...Several discrete mini supercell structures are evolving
   along an east/west-oriented warm front from southeast IL into
   southern IN. Ahead of these storms, the IND VWP is sampling a
   clockwise-curved hodograph with around 250 m2/s2 0-1km SRH along the
   front (based on observed storm motion). Given the narrow overlap of
   this boosted SRH and surface-based instability, a locally favorable
   tornado corridor is evident in the near-term.

   ..Weinman.. 04/30/2025

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

   ATTN...WFO...LMK...IND...ILX...LSX...

   LAT...LON   39518875 39458783 39268565 39018559 38758578 38688634
               38768757 38918912 39128922 39388904 39518875 

   MOST PROBABLE PEAK TORNADO INTENSITY...100-130 MPH
   MOST PROBABLE PEAK WIND GUST...55-70 MPH
   MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN