Mesoscale Discussion 0768
   NWS Storm Prediction Center Norman OK
   0513 PM CDT Sat May 30 2020

   Areas affected...central/northern Oregon into Washington

   Concerning...Severe Thunderstorm Watch 236...

   Valid 302213Z - 310015Z

   The severe weather threat for Severe Thunderstorm Watch 236
   continues.

   SUMMARY...The threat for damaging hail and wind persists across WW
   236, and will spread north across the remainder of Washington this
   evening.

   DISCUSSION...Several severe storms, including small bows/periodic
   supercells exist over north-central Oregon, producing large hail and
   strong wind gusts.  This cluster of storms is close to the surface
   low, and where GPS PWAT is measured at 1.00 to 1.25". Heating
   downstream of these cells as well as a moist/unstable air mass will
   sustain these storms, and any additional storms that may form over
   east-central Oregon.

   Cool temperatures aloft and long hodographs will continue to favor
   cells capable of large, damaging hail, while deep boundary-layer
   mixing helps to sustain strong to damaging outflow. A new watch will
   likely be needed north of WW 236, near/after 23Z.

   ..Jewell.. 05/30/2020

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

   ATTN...WFO...BOI...OTX...PDT...SEW...PQR...

   LAT...LON   45182161 49032071 49021673 47241703 46191730 45451758
               44721805 44471977 44582090 45182161