MESOSCALE DISCUSSION 1578
   NWS STORM PREDICTION CENTER NORMAN OK
   0919 PM CDT THU JUN 26 2008
   
   AREAS AFFECTED...WRN/CNTRL NEBRASKA
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 612...
   
   VALID 270219Z - 270345Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 612
   CONTINUES.
   
   QUASI-LINEAR BAND OF STRONG/THUNDERSTORMS CONTINUES TO MOVE EWD
   ACROSS CENTRAL NEB WITH POTENTIAL TO PRODUCE LARGE HAIL AND DAMAGING
   WIND GUSTS.  STORMS AT THE NRN END OF THE BAND HAVE SEPARATED AND
   MOVED NEWD INTO WW 614 OVER SRN SD.
   
   AIR MASS OVER CENTRAL NEBRASKA IS INCREASINGLY MOIST/UNSTABLE WITH
   SURFACE DEW POINTS IN THE UPPER 60S TO NEAR 70F AND MLCAPE OF
   2000-3000 J/KG.  VERTICAL WIND PROFILES CONTINUE TO EXHIBIT STRONG
   VEERING WITH HEIGHT AND SUFFICIENT VERTICAL SHEAR TO SUPPORT SEVERE
   STORMS.  SURFACE ANALYSIS OVER SHOWS EASTERLY COMPONENT TO THE WINDS
   OVER CENTRAL/ERN NEBRASKA ENHANCING LOW LEVEL STORM-RELATIVE
   INFLOW...AND A WELL-DEFINED PRESSURE RISE-FALL COUPLET ASSOCIATED
   WITH THE CONVECTIVE MESO SYSTEM...SUGGESTING THE SEVERE THREAT WILL
   CONTINUE EWD OVER THE NEXT SEVERAL HOURS.  THUS...AREAS EAST OF WW
   612 WILL NEED TO BE MONITORED FOR INCREASING SEVERE POTENTIAL AND
   THE POSSIBILITY OF ANOTHER WW DURING THE NEXT 1-2 HRS.
   
   ..WEISS.. 06/27/2008
   
   
   ATTN...WFO...FSD...OAX...GID...LBF...
   
   42429825 42449710 42119611 40839592 40549666 40359796
   40469872 41839876