MESOSCALE DISCUSSION 1031
   NWS STORM PREDICTION CENTER NORMAN OK
   0617 PM CDT WED JUN 10 2009
   
   AREAS AFFECTED...MUCH OF AR AND NORTHEAST TX/FAR SOUTHEAST OK
   
   CONCERNING...SEVERE POTENTIAL...WATCH NEEDED SOON 
   
   VALID 102317Z - 110015Z
   
   A WATCH WILL LIKELY BE ISSUED WITHIN THE HOUR FOR MUCH OF AR AND
   NORTHEAST TX/FAR SOUTHEAST OK.
   
   QUASI-LINEAR MCS CONTINUES TO DEVELOP/MOVE EAST-NORTHEASTWARD AT
   AROUND 50 KT ACROSS EASTERN OK ALONG THE I-40 CORRIDOR...ABOUT 40
   MILES WEST OF THE FORT SMITH AREA AS OF 23Z. ORGANIZED NATURE OF
   THIS CONVECTIVE SYSTEM AND A MODERATELY UNSTABLE DOWNSTREAM AIRMASS
   AMIDST 30-35 KT MID LEVEL FLOW WILL SUSTAIN A SEVERE RISK INTO AR
   THIS EVENING. ADDITIONAL/MORE EXTENSIVE BOW ECHO CURRENTLY ACROSS
   NORTH CENTRAL TX...AND OTHER PERIPHERAL DEVELOPMENT IN VICINITY OF
   THE RED RIVER...WILL LIKELY POSE A SEVERE THREAT INTO NORTHEAST
   TX/FAR SOUTHEAST OK THIS EVENING. WITH WEAK/VEERED LOW LEVEL
   FLOW...DAMAGING WINDS AND PERIODIC SEVERE HAIL SHOULD BE THE PRIMARY
   HAZARDS.
   
   ..GUYER.. 06/10/2009
   
   
   ATTN...WFO...MEG...LZK...SHV...TSA...FWD...
   
   LAT...LON   32389463 33289542 34489488 36289320 36459126 35779094
               33689161 32389463