MESOSCALE DISCUSSION 2076
   NWS STORM PREDICTION CENTER NORMAN OK
   1041 AM CDT SUN AUG 28 2011
   
   AREAS AFFECTED...ERN NEB...WRN/CENTRAL IA
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 814...
   
   VALID 281541Z - 281715Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 814
   CONTINUES.
   
   SEVERAL CLUSTERS OF THUNDERSTORMS OVER SERN SD INTO ERN NEB AND WRN
   IA HAVE MOVED SEWD 20-25 KT...AND MOST STORMS HAVE GRADUALLY
   DIMINISHED IN INTENSITY DURING THE LAST 2 HRS.  ADDITIONAL ISOLATED
   STRONG STORM CORES ARE WEST OF THE WATCH OVER CENTRAL NEB.  
   
   CONVECTION HAS LARGELY REMAINED ELEVATED WITHIN STEEP MID LEVEL
   LAPSE RATE ENVIRONMENT...IN ASSOCIATION WITH A SHORT WAVE TROUGH
   MOVING SEWD ACROSS ERN SD AND LOW LEVEL WARM ADVECTION ABOVE THE PBL
   ALONG THE NOSE OF MODEST SWLY 850 MB JET.  STRONG NWLY FLOW ALOFT
   HAS RESULTED IN CLOUDS SPREADING SEWD FROM THE EXISTING
   STORMS...WHICH WILL INHIBIT DIABATIC HEATING/DESTABILIZATION
   IMMEDIATELY DOWNSTREAM FROM THE STORMS OVER ERN NEB AND WRN IA. 
   THERE MAY CONTINUE TO BE A THREAT FOR LARGE HAIL AND POSSIBLY GUSTY
   SURFACE WINDS...ALTHOUGH ELEVATED NATURE OF THE STORMS SHOULD
   MODULATE THE SEVERE WIND THREAT AT THE GROUND.
   
   ACTIVITY OVER CENTRAL NEB IS ALSO BEING MONITORED FOR CONVECTIVE
   TRENDS.
   
   ..WEISS.. 08/28/2011
   
   
   ATTN...WFO...DMX...FSD...OAX...GID...LBF...
   
   LAT...LON   42659830 43499666 43469528 42239365 40669543 40569667
               41859796 42659830