MESOSCALE DISCUSSION 0453
   NWS STORM PREDICTION CENTER NORMAN OK
   0943 AM CDT SAT APR 16 2011
   
   AREAS AFFECTED...PORTIONS OF CNTRL/ERN WV INTO SWRN PA
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 161443Z - 161545Z
   
   THE THREAT FOR ISOLATED STRONG-SEVERE WIND GUSTS MAY INCREASE
   THROUGH THE MORNING AND AREA IS BEING MONITORED FOR A POSSIBLE WW.
   
   AS OF 1430Z...RADAR IMAGERY INDICATED A BOWING LINE SEGMENT FROM
   JUST E OF PKB TO 30 E OF CRW MOVING FROM 235/45-50 KT.  12Z OBSERVED
   AND CURRENT RUC FORECAST SOUNDING DATA SUGGEST THAT THIS CONVECTION
   IS STILL ELEVATED /BASED IN THE 800-700 MB LAYER/ ABOVE A STABLE
   NEAR-SURFACE LAYER.  VISIBLE SATELLITE IMAGERY DOES SUGGEST THAT
   BREAKS IN THE CLOUDS IMMEDIATELY DOWNSTREAM FROM THIS ACTIVITY MAY
   ALLOW FOR LOCALLY STRONGER DIABATIC HEATING TO OCCUR IN THE BOUNDARY
   LAYER WITH A RESULTANT STEEPENING OF LOW-LEVEL LAPSE RATES.  GIVEN
   THE VERY STRONG WIND FIELD OBSERVED BY REGIONAL VWP DATA /I.E. 50-70
   KT SLY FLOW AT 1 KM AGL/...THE POTENTIAL WILL EXIST FOR A CORRIDOR
   OF WIND DAMAGE SHOULD THE STORMS BECOME SURFACE-BASED.
   
   ..MEAD.. 04/16/2011
   
   
   ATTN...WFO...CTP...LWX...RNK...PBZ...RLX...
   
   LAT...LON   38288089 38828086 39208107 39518098 40038066 40428037
               40477968 40047922 39417932 38887955 38357980 38208028
               38288089