Mesoscale Discussion 0846
   NWS Storm Prediction Center Norman OK
   0558 PM CDT Thu Jun 03 2021

   Areas affected...portions of eastern Oregon into western Idaho and
   western Montana

   Concerning...Severe potential...Watch unlikely 

   Valid 032258Z - 040130Z

   Probability of Watch Issuance...5 percent

   SUMMARY...A damaging gust or two remains possible with the stronger
   storms into the early evening hours. A WW issuance is not expected.

   DISCUSSION...A deep, dry boundary layer has evolved this afternoon
   across portions of the Interior West along the periphery of an upper
   ridge. Strong heating beneath an 8+ C/km surface-500 mb lapse rate
   environment has promoted enough lift and marginal instability (i.e.
   at or under 500 J/kg MLCAPE) to support thunderstorm development. A
   couple of storms have briefly acquired appreciable intensity over
   the past hour (with a 45 kt gust recently measured in Owyhee County,
   ID), and a couple more storms may support a strong/damaging gust
   through the evening hours given the aforementioned steep lapse rates
   in place. However, the sparse and brief nature of the severe threat
   precludes a WW issuance.

   ..Squitieri/Thompson.. 06/03/2021

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

   ATTN...WFO...TFX...PIH...MSO...BOI...OTX...PDT...MFR...

   LAT...LON   42681986 44241930 44821875 46731627 48131312 48591119
               48551006 47970976 47251077 46461216 44801474 43621578
               42851610 42361684 42241880 42681986