MESOSCALE DISCUSSION 1739
   NWS STORM PREDICTION CENTER NORMAN OK
   0147 PM CDT WED JUL 09 2003
   
   AREAS AFFECTED...ERN WV...NRN AND WRN MD...NRN/WRN/SWRN VA
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 695...
   
   VALID 091847Z - 092015Z
   
   ACROSS WW 695...AN ORGANIZED LINE OF THUNDERSTORMS EXTENDS AT 1835Z
   FROM THE NERN WV PANHANDLE SSWWD TO 10W ROA BEFORE ARCING WWD ACROSS
   FAR SWRN SECTIONS OF VA. STRONG COLD POOL IN ASSOCIATION WITH THIS
   LINE IN ADDITION TO MODERATE DEEP-LAYER WLY SHEAR SHOULD STEER THE
   LINE EWD AT 30-35KT. ENVIRONMENT REMAINS MODERATELY UNSTABLE IN
   ADVANCE OF ONGOING CONVECTION WITH 100MB MLCAPE VALUES OF 1000-1500
   J/KG ACROSS WRN VA. EMBEDDED SMALL-SCALE BOWS WILL HAVE AN ENHANCED
   POTENTIAL FOR DAMAGING WIND GUSTS DURING THE NEXT FEW HOURS.
   ADDITION CONVECTION DEVELOPING IN LYH VICINITY MAY ALSO BECOME
   SEVERE DURING THE NEXT HOUR OR SO.  
   
   AT THE SRN END OF THE CONVECTIVE LINE...STORMS HAVE ATTAINED AN E-W
   ORIENTATION ...RESULTING IN TRAINING ECHOES AND INCREASED HEAVY RAIN
   POTENTIAL ACROSS SCOTT...RUSSELL...WASHINGTON...AND SMYTH COUNTIES
   IN SWRN VA. SEVERE THUNDERSTORM POTENTIAL IN THIS AREA WILL LIKELY
   DECREASE IN FAVOR OF HEAVY RAINFALL...AND AN ADDITIONAL WATCH IS NOT
   ANTICIPATED IN ADJACENT AREAS OF FAR NERN TN/NRN NC. 
   
   ISOLATED CONVECTION CONTINUES ACROSS N-CENTRAL SECTIONS OF VA.
   SEVERE THUNDERSTORM OVER LOUDOUN COUNTY VA WILL PASS NEAR DULLES
   AIRPORT AT 1915Z AND THE SOUTH SIDE OF WASHINGTON D.C. BETWEEN 1930Z
   AND 2000Z BASED ON PRESENT TRENDS.
   
   ..BANACOS.. 07/09/2003
   
   
   ATTN...WFO...PHI...AKQ...LWX...RNK...PBZ...RLX...MRX...JKL...
   
   36598343 37258260 37748128 39647956 39667592 38257773
   36717967 36688162