Mesoscale Discussion 0908
   NWS Storm Prediction Center Norman OK
   0926 PM CDT Thu Jun 11 2020

   Areas affected...Portions of western and central Oregon

   Concerning...Severe potential...Watch unlikely 

   Valid 120226Z - 120430Z

   Probability of Watch Issuance...20 percent

   SUMMARY...An organized storm or two may produce large hail and an
   isolated strong wind gusts. A marginal thermodynamic environment
   will tend to limit storm longevity. A WW is not currently
   anticipated.

   DISCUSSION...A small cluster of thunderstorms has formed within the
   Klamath Mountains in southwestern Oregon. A couple of the cells have
   become more organized and shown supercellular characteristics. The
   00Z Medford sounding sampled steep mid-level lapse rates of 7.6 C/km
   with strong effective shear of 55 kts. Buoyancy remains limited,
   however, with only just over 600 J/kg MLCAPE. Should storms sustain
   themselves, the environment will favor large hail and perhaps a
   isolated strong wind gust. Long and straight hodographs will also
   favor storm splits that may continue to progress west of the Cascade
   crest. The main concern is how long storms will maintain intensity
   given the limited buoyancy. Some of the current activity has already
   been observed to pulse in intensity on KMAX radar imagery. A storm
   or two may continue to move NNE into northern Oregon/southern
   Washington with continued forcing for ascent from an approaching
   shortwave trough. With storm coverage and longevity remaining
   questionable, a WW is not currently anticipated.

   ..Wendt/Kerr.. 06/12/2020

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

   ATTN...WFO...PDT...MFR...PQR...

   LAT...LON   43092323 44552267 45422182 45552099 44982047 43862087
               42732177 42222211 42092252 42062293 42282329 43092323