Mesoscale Discussion 0874
   NWS Storm Prediction Center Norman OK
   0555 PM CDT Sun Jun 07 2020

   Areas affected...eastern North Dakota and northwest Minnesota

   Concerning...Tornado Watch 267...

   Valid 072255Z - 080100Z

   The severe weather threat for Tornado Watch 267 continues.

   SUMMARY...Ongoing and developing supercells are moving
   north-northeast across eastern North Dakota and northwest Minnesota.
   All severe threats remain possible and it appears the tornado threat
   is increasing.

   DISCUSSION...Enhanced surface convergence near north-to-south
   oriented surface troughing and an outflow boundary are helping to
   initiate supercells in far eastern North Dakota and northwest
   Minnesota. Storms are beginning to exhibit stronger rotation and
   low-level shear is most favorable where the supercells are currently
   developing near the outflow boundary and towards the warm front
   draped northwest to southeast across northwest Minnesota. This
   corridor of enhanced low-level helicity (200-400 m2/s2 per
   mesoanalysis) will likely be a focus for tornadic supercell
   development. Given the strong deep layer shear and large
   instability, large hail and damaging winds will also be likely with
   any storm development.

   ..Nauslar/Hart.. 06/07/2020

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

   ATTN...WFO...FGF...BIS...

   LAT...LON   48959730 48929637 48589608 47479582 46069612 46009767
               46059844 46129907 46369946 47309913 48129875 48619831
               48839789 48959730