Storm Prediction Center Mesoscale Discussion 797

   Mesoscale Discussion 0797
   NWS Storm Prediction Center Norman OK
   0639 PM CDT Tue May 19 2026

   Areas affected...portions of eastern and southern Ohio...far
   southeastern Indiana

   Concerning...Severe Thunderstorm Watch 230...231...

   Valid 192339Z - 200045Z

   The severe weather threat for Severe Thunderstorm Watch 230, 231
   continues.

   SUMMARY...A few damaging gusts are possible over the next couple of
   hours before boundary layer stabilization occurs. Local WW
   extensions may be needed if storms can maintain their intensity.

   DISCUSSION...A persistent elongated MCS continues to track eastward
   across the eastern OH Valley with a history of widely scattered
   damaging gusts. Surface temperatures range from the low to mid 80s F
   ahead of the line, accompanied by 1500-2000 J/kg MLCAPE, suggesting
   that the boundary layer is still unstable and mixed enough to
   support a few additional damaging gusts. However, this threat should
   gradually subside with the loss of daytime heating. Still, WW
   extensions may be needed if storms persist for more than a couple of
   hours.

   ..Squitieri.. 05/19/2026

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

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

   LAT...LON   38738717 39338523 40098396 41368243 41628156 41528086
               41268073 40768113 39918232 39128295 38808353 38648420
               38608539 38648685 38738717 

   MOST PROBABLE PEAK WIND GUST...55-70 MPH