Mesoscale Discussion 1478
   NWS Storm Prediction Center Norman OK
   0622 PM CDT Thu Aug 13 2020

   Areas affected...Central Nebraska

   Concerning...Severe potential...Watch unlikely 

   Valid 132322Z - 140045Z

   Probability of Watch Issuance...20 percent

   SUMMARY...Isolated supercells expected to continue through the
   evening.

   DISCUSSION...Two isolated supercells have developed in Nebraska, a
   longer-lived cell in McPherson county and more recent development in
   Brown County. Instability is very strong (3000 to 4500 MLCAPE per
   SPC mesoanalysis), with effective shear around 30 to 35 kts per KLNX
   VWP. This environment should support a continued threat for intense
   supercells for the next few hours with a large hail and damaging
   wind as the primary threat. Storms will likely diurnally weaken
   given the lack of stronger upper-level forcing. Given the isolated
   nature of the storms and the relatively short duration they are
   expected to persist for, a watch is unlikely.

   ..Bentley.. 08/13/2020

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

   ATTN...WFO...GID...LBF...

   LAT...LON   40710128 41510117 42260064 42760024 42999990 42999940
               42809906 42329889 41569904 40819979 40590043 40610091
               40710128