MESOSCALE DISCUSSION 0865
   NWS STORM PREDICTION CENTER NORMAN OK
   0521 PM CDT SUN MAY 22 2011
   
   AREAS AFFECTED...NRN AR
   
   CONCERNING...TORNADO WATCH 330...
   
   VALID 222221Z - 222315Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 330 CONTINUES.
   
   THUNDERSTORMS MOVING E ACROSS TORNADO WATCH 330 HAVE GENERALLY
   REMAINED WITHIN THE COOL SIDE OF OUTFLOW BOUNDARY...WHERE
   TEMPERATURES ARE IN THE MID 70S AND DEWPOINTS ARE IN THE MID TO
   UPPER 60S. MODIFIED RUC SOUNDINGS FOR THESE CONDITIONS DISPLAY A
   SHALLOW INVERSION ABOVE THE SURFACE...WHICH MAY BE INHIBITING
   TORNADO PRODUCTION THUS FAR. FARTHER S OVER CNTRL AR...TEMPERATURES
   ARE WARMING INTO THE MID 80S...WITH DEWPOINTS NEAR 70...FAVORING
   STRONG SURFACE BASED INSTABILITY /SBCAPE NEAR 3500 J PER KG/. IN THE
   SHORT TERM...TORNADO POTENTIAL WILL LIKELY BE MAXIMIZED INVOF THE
   OUTFLOW BOUNDARY...LOCATED ALONG A LINE FROM MEM E TO 25 N OF LIT TO
   RUE...IF NEW STORM DEVELOPMENT CAN TAKE PLACE IN THAT AREA.
   OTHERWISE...STORMS MOVING ACROSS THE SURFACE COLD POOL OVER PORTIONS
   OF NRN/NERN AR WILL LIKELY POSE MAINLY A LARGE HAIL AND ISOLATED
   DAMAGING WIND THREAT.
   
   ..GARNER.. 05/22/2011
   
   
   ATTN...WFO...PAH...MEG...LZK...SGF...TSA...
   
   LAT...LON   36589364 36489039 34999039 35129366 36589364