Mesoscale Discussion 1764
   NWS Storm Prediction Center Norman OK
   0843 PM CDT Fri Aug 16 2019

   Areas affected...southeastern Wyoming...eastern Colorado and into
   western and central portions of Kansas/Nebraska

   Concerning...Severe Thunderstorm Watch 588...

   Valid 170143Z - 170345Z

   The severe weather threat for Severe Thunderstorm Watch 588
   continues.

   SUMMARY...Severe risk continues over parts of the central high
   Plains, and should spread eastward this evening into the central
   Plains.

   DISCUSSION...Latest radar loop over the central high Plains area
   shows isolated/vigorous storms over portion of eastern Colorado,
   with some upscale growth now indicated over northeast Colorado --
   i.e. the Logan County vicinity -- over the past half hour.

   Objective analyses continue to indicate a very unstable airmass
   across Kansas, east of the ongoing storms, while VAD wind profiles
   indicate a strengthening low-level jet over the Oklahoma/Kansas
   vicinity.  

   It would appear, given the thermodynamic and kinematic setup, that
   storms should spread/develop eastward out of WW 588 and into the
   lower Plains over the next few hours, with the HRRR continuing to
   forecast this evolution as well.  Presuming this evolution, a new WW
   will likely be needed into larger portions of Kansas -- and possibly
   Nebraska -- over the next 1-2 hours.  Meanwhile, risk for damaging
   winds and large hail continues within WW 588.

   ..Goss.. 08/17/2019

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

   ATTN...WFO...TOP...ICT...GID...LBF...DDC...GLD...PUB...BOU...
   CYS...

   LAT...LON   42020527 42930434 42590178 41059858 39289708 38359729
               37770172 37910341 38770422 39710452 40910449 42020527