MESOSCALE DISCUSSION 1056
   NWS STORM PREDICTION CENTER NORMAN OK
   0342 PM CDT THU JUN 11 2009
   
   AREAS AFFECTED...PARTS OF ERN VA / MD
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 377...
   
   VALID 112042Z - 112115Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 377
   CONTINUES.
   
   SEVERE POTENTIAL APPEARS APPRECIABLY LOW FOR WW 377 ACROSS PORTIONS
   OF ERN VA AND MD.  
   
   LATEST VISIBLE IMAGERY SHOW WEAKENING CU FIELD NEAR CHESAPEAKE BAY
   AHEAD OF DECAYED MCS OVER EXTREME SRN VA AND NRN CNTRL NC.  DESPITE
   TEMPS WARMING WELL INTO THE 80S F WITHIN DESTABILIZING BOUNDARY
   LAYER...ONLY WEAK SURFACE CONVERGENCE NOTED IN SUBJECTIVE SURFACE
   ANALYSIS...APPEARS TO BE INSUFFICIENT FOR TSTMS ON DIFFUSE OUTFLOW. 
   WITH DAYTIME HEATING ANTICIPATED TO WANE THE NEXT FEW
   HOURS...LIKELIHOOD OF STUNTED CONVECTION REACHING THE LFC BECOMES
   INCREASINGLY LESS PROBABLE WITH TIME.  AS SUCH...SEVERE POTENTIAL
   ALTHOUGH MINIMAL ATTM...MAY CONTINUE TO DECREASE FURTHER TOWARDS
   LATE AFTERNOON/EARLY EVENING.
   
   ..SMITH.. 06/11/2009
   
   
   ATTN...WFO...LMK...IND...PAH...ILX...LSX...
   
   LAT...LON   37568663 37648770 37868878 38388920 38838911 39058897
               39128830 39418784 39858773 40218679 40138611 39588542
               39138550 38498580 37808605 37738606 37568663