Storm Prediction Center Mesoscale Discussion 2224

   Mesoscale Discussion 2224
   NWS Storm Prediction Center Norman OK
   0719 PM CDT Thu Sep 03 2026

   Areas affected...portions of southern Pennsylvania into western
   Maryland and the far eastern West Virginia Panhandle

   Concerning...Severe Thunderstorm Watch 650...

   Valid 040019Z - 040115Z

   The severe weather threat for Severe Thunderstorm Watch 650
   continues.

   SUMMARY...A small bowing cluster continues to bring a risk for
   primarily damaging/severe wind gusts.

   DISCUSSION...A persistent bowing cluster remains ongoing across
   south-central Pennsylvania having produced a swath of wind damage
   reports across portions of western/southwestern PA over the past
   several hours. While latest objective analysis suggests that the
   low-levels are beginning to stabilize owing to the onset of
   nocturnal cooling, moderate to strong instability (2500-3000+ J/kg
   MLCAPE) and effective shear upwards of 30-35 kts sampled by the
   downstream 00z IAD observed sounding should continue to promote
   organized, robust updrafts and the potential for damaging/severe
   wind gusts for at least another 1-2 hours (as supported by a recent
   59 mph measured wind gust at the KJST ASOS site in southern PA).

   ..Chalmers.. 09/04/2026

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

   ATTN...WFO...CTP...LWX...

   LAT...LON   39627861 39787882 39887884 40017878 40247859 40307844
               40297828 40177795 39927739 39767720 39537717 39337744
               39387790 39627861 

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