MESOSCALE DISCUSSION 0859
   NWS STORM PREDICTION CENTER NORMAN OK
   0310 PM CDT SUN MAY 22 2011
   
   AREAS AFFECTED...NRN AR
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 222010Z - 222115Z
   
   A TORNADO WATCH MAY BE NEEDED FOR NRN AR.
   
   LONE SUPERCELL IS CURRENTLY DRIFTING EWD ACROSS N CNTRL AR...NEAR
   WRN EDGE OF RESIDUAL OUTFLOW. GIVEN A SWLY LOW LEVEL JET...A
   MOIST/UNSTABLE FEED OF SURFACE BASED AIR WILL CONTINUE TO FEED THIS
   STORM. FARTHER E...TEMPERATURES ARE REBOUNDING QUICKLY OVER E CNTRL
   AR AS WELL.  GIVEN STRONG INSTABILITY...DECREASING CIN...AND
   LOCALIZED LOW LEVEL SHEAR...A SMALL AREA OF TORNADO POTENTIAL MAY
   EXIST. LARGE HAIL IS ALSO LIKELY.
   
   ..JEWELL.. 05/22/2011
   
   
   ATTN...WFO...MEG...LZK...TSA...
   
   LAT...LON   35449100 35439323 35909380 36419323 36359064 35449100