Storm Prediction Center Mesoscale Discussion 609

   Mesoscale Discussion 0609
   NWS Storm Prediction Center Norman OK
   0510 PM CDT Tue Apr 29 2025

   Areas affected...Central Appalachians

   Concerning...Severe Thunderstorm Watch 191...

   Valid 292210Z - 292345Z

   The severe weather threat for Severe Thunderstorm Watch 191
   continues.

   SUMMARY...Damaging winds are expected ahead of a squall line this
   evening.

   DISCUSSION...Mature MCS is progressing across the upper Ohio Valley
   early this evening. Leading edge of this complex is surging east in
   excess of 35kt and damaging winds have been noted along the leading
   squall line. Latest diagnostic data suggests a narrow corridor of
   higher instability extends across the eastern WV/MD Panhandle, and
   0-3km lapse rates are fairly steep. This MCS should continue east
   and the current watch may need to be extended to account for the
   this activity spreading beyond ww191.

   ..Darrow.. 04/29/2025

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

   ATTN...WFO...CTP...LWX...PBZ...RLX...

   LAT...LON   39358007 40397886 41307875 41157719 39987752 39097884
               39358007 

   MOST PROBABLE PEAK TORNADO INTENSITY...85-115 MPH
   MOST PROBABLE PEAK WIND GUST...55-70 MPH
   MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN