Storm Prediction Center Mesoscale Discussion 1013

   Mesoscale Discussion 1013
   NWS Storm Prediction Center Norman OK
   0106 AM CDT Sun Jun 07 2026

   Areas affected...Eastern Montana into far western North Dakota

   Concerning...Severe Thunderstorm Watch 283...

   Valid 070606Z - 070800Z

   The severe weather threat for Severe Thunderstorm Watch 283
   continues.

   SUMMARY...Large hail and isolated severe gusts will remain possible
   into the overnight in eastern Montana and far western North Dakota.

   DISCUSSION...With very strong shear (70-80 kt effective in eastern
   Montana), storms in WW 283 have generally remained cellular. The
   environment will likely continue to support this storm mode, though
   small clusters may yet develop. Steep mid-level lapse rates sampled
   on this evenings GGW sounding will promote some risk of large hail.
   The threat for severe wind gusts is less clear given the
   post-frontal nature of the storms. The severe wind risk will be
   greater if storms develop along/near the cold front.

   ..Wendt.. 06/07/2026

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

   ATTN...WFO...BIS...BYZ...GGW...

   LAT...LON   46690651 48210544 49080439 49100301 48790248 47710326
               46810426 46470484 46480612 46690651 

   MOST PROBABLE PEAK WIND GUST...55-70 MPH
   MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN