MESOSCALE DISCUSSION 1047
   NWS STORM PREDICTION CENTER NORMAN OK
   0941 AM CDT THU JUN 11 2009
   
   AREAS AFFECTED...NERN AL INTO NRN GA
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 111441Z - 111615Z
   
   TSTMS ARE EXPECTED TO BECOME MORE NUMEROUS SWD ALONG CONFLUENCE BAND
   ASSOCIATED WITH MCV.  AN ADDITIONAL WW MAY BECOME NECESSARY BY LATE
   MORNING OR EARLY AFTERNOON.
   
   WELL-DEFINED MCV N OF MSL CONTINUES TO MOVE ENEWD AT AROUND 30 KT. 
   THUS FAR...THE MOST INTENSE AND WIDESPREAD STORMS REMAIN CONFINED TO
   VICINITY OF MCV OVER MIDDLE TN WITH MORE ISOLATED STORMS IN PROGRESS
   TO THE S OF HSV.  WITH TIME...STORMS MAY TEND TO BUILD SWD ALONG
   LOW-LEVEL CONFLUENT ZONE ATTENDANT TO MCV...PERHAPS MERGING WITH
   MORE ISOLATED STORMS TO THE S.
   
   12Z BHM/ATL SOUNDINGS INDICATED THE PRESENCE OF A RATHER MOIST
   BOUNDARY LAYER WITH DEWPOINTS IN THE LOWER 70S AND 100 MB MEAN
   MIXING RATIOS OF 15-16 G/KG.  MORNING VISIBLE SATELLITE IMAGERY
   SUGGESTS THAT STRONG DIABATIC HEATING SHOULD OCCUR ACROSS IMMEDIATE
   DOWNSTREAM AIR MASS WHICH...WHEN COUPLED WITH THE MOIST BOUNDARY
   LAYER...WILL CONTRIBUTE TO MLCAPE APPROACHING 2000-2500 J/KG.  VWP
   DATA FROM COLUMBUS AFB AND HSV INDICATE 40-50 KT WLY FLOW IN THE 3-4
   KM AGL LAYER WHICH MAY SERVE TO PROMOTE THE DEVELOPMENT OF BOWING
   STRUCTURES CAPABLE OF DAMAGING WINDS AND SOME HAIL.
   
   ..MEAD.. 06/11/2009
   
   
   ATTN...WFO...FFC...BMX...HUN...
   
   LAT...LON   34628659 34938611 34978459 34938395 34618374 34268395
               34048481 34018570 34258644 34628659