MESOSCALE DISCUSSION 1856
   NWS STORM PREDICTION CENTER NORMAN OK
   0215 AM CDT SUN SEP 08 2013

   AREAS AFFECTED...PORTIONS OF N-CENTRAL/NERN SD...EXTREME S-CENTRAL
   ND

   CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY 

   VALID 080715Z - 080815Z

   PROBABILITY OF WATCH ISSUANCE...20 PERCENT

   SUMMARY...A LOCALIZED DAMAGING WIND THREAT WITH EWD-MOVING BOWING
   SEGMENT OVER N-CENTRAL SD MAY CONTINUE ANOTHER 1 TO 2 HOURS BEFORE
   BEGINNING TO DIMINISH THEREAFTER. A WW IS NOT CURRENTLY ANTICIPATED.

   DISCUSSION...LINE OF TSTMS FROM EMMONS COUNTY ND SWD TO SULLY COUNTY
   SD HAS ACCELERATED SOMEWHAT SINCE 06Z AND WAS MOVING EWD AT 35-40
   KTS...WITH A PRONOUNCED BOWING FEATURE EVIDENT AND A SPOTTER REPORT
   OF ESTIMATED 60-70 MPH WINDS. THE LATEST VWP FROM KABR SAMPLED SELY
   FLOW OF 25 KTS ABOVE THE SFC...WHICH IS PROVIDING INFLOW OF MODESTLY
   UNSTABLE AIR /MUCAPES 500-1000 J/KG/ INTO THE LINE. WITH 30 KTS OF
   WLY MID-LEVEL FLOW AND A WELL-DEVELOPED COLD POOL...A LOCALIZED
   DAMAGING WIND THREAT MAY PERSIST FOR AN ADDITIONAL 1 TO 2 HOURS
   ACROSS THE DISCUSSION AREA. THEREAFTER...WEAKENING INFLOW AND
   INCREASING CINH IS EXPECTED TO RESULT IN A DIMINISHING SVR THREAT.
   ALTHOUGH A WW IS NOT CURRENTLY ANTICIPATED...CONVECTIVE TRENDS WILL
   CONTINUE TO BE MONITORED.

   ..BUNTING/CORFIDI.. 09/08/2013


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

   LAT...LON   44649857 44569947 44750000 45130006 45380007 45600010
               45790012 46250012 46439938 46169823 45929794 45669789
               45399783 45109789 44839814 44649857