Mesoscale Discussion 0679
   NWS Storm Prediction Center Norman OK
   0251 AM CDT Sat Jun 09 2018

   Areas affected...Eastern Nebraska...Western Iowa

   Concerning...Severe potential...Watch possible 

   Valid 090751Z - 090945Z

   Probability of Watch Issuance...40 percent

   SUMMARY...A wind damage threat will likely continue for a couple
   more hours across parts of eastern Nebraska. The severe threat may
   affect Iowa but the wind damage threat with the line is expected to
   become more isolated with time. Due to the continued severe threat,
   weather watch issuance still can not be ruled out.

   DISCUSSION...The latest radar imagery shows an MCS over east-central
   Nebraska with a well-defined outflow boundary surging southeastward
   away from the line in southern Nebraska. Over the last hour, several
   measured severe wind gusts have been observed, notably at Aurora,
   Kearney and York. Moderate instability is analyzed ahead of the line
   by the RAP with MLCAPE estimated in the 2500 J/kg near Omaha. This
   should enable the line to continue to have a wind damage threat for
   a couple more hours. However, a gradual decrease in the threat is
   expected to take place as the MCS approaches western Iowa.

   ..Broyles/Thompson.. 06/09/2018

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

   ATTN...WFO...DMX...EAX...FSD...OAX...TOP...GID...

   LAT...LON   42439505 42109439 41689429 41219469 40799522 40139581
               39869650 40259739 40859806 41579803 42739659 42439505