Mesoscale Discussion 1031
   NWS Storm Prediction Center Norman OK
   1016 PM CDT Sat Jun 27 2020

   Areas affected...Northern KS...Southern NE

   Concerning...Severe Thunderstorm Watch 311...

   Valid 280316Z - 280515Z

   The severe weather threat for Severe Thunderstorm Watch 311
   continues.

   SUMMARY...Scattered strong/severe storms will spread across mainly
   the northern portions of ww311.

   DISCUSSION...High-plains convection has evolved into a line segment,
   roughly 50mi in length, as it propagates across northwestern
   portions of the watch. Earlier, winds gusted to 50kt at Burlington
   CO with this squall line. Latest observational data suggest earlier
   surface boundary that was lifting north across southwest KS has
   advanced to near the I-70 corridor, and warm advection is now
   focused north of this wind shift. In addition, LLJ is beginning to
   strengthen into this zone which should aid longevity of convection
   as it spreads east into the early morning hours.

   ..Darrow.. 06/28/2020

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

   ATTN...WFO...TOP...ICT...GID...DDC...GLD...PUB...

   LAT...LON   38410235 40160190 40159774 38419828 38410235