Storm Prediction Center Mesoscale Discussion 1938

   Mesoscale Discussion 1938
   NWS Storm Prediction Center Norman OK
   0824 PM CDT Sat Aug 17 2024

   Areas affected...portions of far northern Oregon into central
   Washington

   Concerning...Severe Thunderstorm Watch 631...

   Valid 180124Z - 180300Z

   The severe weather threat for Severe Thunderstorm Watch 631
   continues.

   SUMMARY...The severe threat continues across Severe Thunderstorm
   Watch 631. Damaging gusts and hail are the main threats over the
   next few hours.

   DISCUSSION...A band of multicells and transient supercells continue
   to progress northward in conjunction with a 700 mb impulse/500 mb
   speed max, with a history of occasional 1 inch hail reports. These
   storms will continue to progress into an unstable airmass,
   characterized by at least 500-1000 J/kg MLCAPE. With 40-50 kts of
   effective bulk shear overspreading this buoyancy axis, the ongoing
   storms may remain organized for at least a few more hours,
   accompanied by a continued strong gust/hail threat.

   ..Squitieri.. 08/18/2024

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

   ATTN...WFO...PDT...SEW...PQR...

   LAT...LON   45892249 47142253 47592202 47602124 47252061 46732027
               46022015 45582021 45312038 45122066 45072080 45092115
               45212175 45892249