MESOSCALE DISCUSSION 1197
   NWS STORM PREDICTION CENTER NORMAN OK
   0453 PM CDT SUN JUN 12 2011
   
   AREAS AFFECTED...NERN CO...NEB PANHANDLE
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 122153Z - 122300Z
   
   HIGH BASED CONVECTION IS EXPANDING IN AREAL COVERAGE AND
   INTENSIFYING ACROSS NERN CO WHERE LAPSE RATES ARE STEEP AND
   INHIBITION IS NOW NEGLIGIBLE.  LATEST WV IMAGERY SUGGESTS A WEAK
   UPPER VORT MAY BE PARTLY RESPONSIBLE FOR UPWARD DEVELOPMENT ACROSS
   THIS REGION AS AN EMBEDDED SHORTWAVE IS LIKELY EJECTING INTO THE
   CNTRL HIGH PLAINS WITHING BROADER SWLY FLOW REGIME.  WITH LLJ
   EXPECTED TO INCREASE ACROSS THE CNTRL HIGH PLAINS ANY STORMS THAT
   EVOLVE ACROSS THIS REGION SHOULD PERSIST WELL INTO THE EVENING
   HOURS.  SHEAR PROFILES ARE CERTAINLY SUPPORTIVE OF SUPERCELLS BUT
   SUB-CLOUD LAYER RH APPEARS A BIT TOO DRY TO WARRANT ANY MEANINGFUL
   RISK OF TORNADOES.
   
   ..DARROW.. 06/12/2011
   
   
   ATTN...WFO...LBF...UNR...GLD...BOU...CYS...
   
   LAT...LON   39560348 41920403 43110354 42800174 39810137 39560348