MESOSCALE DISCUSSION 1073
   NWS STORM PREDICTION CENTER NORMAN OK
   1003 AM CDT FRI JUN 12 2009
   
   AREAS AFFECTED...PARTS OF ERN OK / AR / NRN MS / SWRN TN
   
   CONCERNING...OUTLOOK UPGRADE 
   
   VALID 121503Z - 121630Z
   
   REGION WILL BE UPGRADED TO A MODERATE RISK FOR THE 1630Z CONVECTIVE
   OUTLOOK.
   
   AS MENTIONED IN MCD 1072...REGIONAL SOUNDINGS INDICATED THE PRESENCE
   OF ANY ALREADY STRONGLY UNSTABLE AIR MASS WITH MUCAPE OF 3000-4000
   J/KG.  12/00Z HIGH RESOLUTION MODEL RUNS HAVE VERIFIED REMARKABLY
   WELL WITH THE EVOLUTION OF NERN OK BOW ECHO WITH THESE DATA TAKING
   SYSTEM THROUGH AR INTO NRN MS TODAY.  GIVEN THE DEGREE OF
   INSTABILITY AND 40-50 KT OF DEEP-LAYER SHEAR...SETUP WILL BE
   FAVORABLE FOR A CORRIDOR OF SIGNIFICANT WIND AND HAIL DAMAGE. 
   ADDITIONAL STORMS DEVELOPING DOWNSTREAM FROM BOW ECHO WILL ALSO POSE
   A RISK OF LARGE HAIL AND DAMAGING WINDS.
   
   ..MEAD.. 06/12/2009
   
   
   ATTN...WFO...MEG...JAN...LZK...SHV...TSA...
   
   LAT...LON   34989526 36049547 36469496 36189190 34828813 33818826
               33288875 33669129 34369429 34989526