MESOSCALE DISCUSSION 2059
   NWS STORM PREDICTION CENTER NORMAN OK
   0524 PM CDT THU AUG 25 2011
   
   AREAS AFFECTED...ERN VA...SRN MD
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 807...
   
   VALID 252224Z - 260000Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 807
   CONTINUES.
   
   THE SEVERE THREAT ACROSS WW 807 WILL LIKELY CONTINUE THIS
   EVENING...SPREADING SEWD ACROSS THE REMAINDER OF ERN VA AND SRN MD.
   HAIL AND DAMAGING WIND GUSTS WILL BE POSSIBLE WITH THE MORE INTENSE
   CELLS. A LOCAL WW EXTENSION IS PLANNED FOR SERN VA BY WFO AKQ.
   
   A CONTINUOUS LINE OF STRONG TO SEVERE THUNDERSTORMS IS LOCATED FROM
   SRN MD SWWD INTO ECNTRL VA NEAR RICHMOND TO JUST NORTH OF THE NC-VA
   STATE-LINE. AHEAD OF THE LINE...MESOANALYSIS SHOWS AN AXIS OF
   MODERATE INSTABILITY WITH MLCAPE VALUES IN THE 1500 TO 2000 J/KG
   RANGE. THIS SHOULD ENABLE THE LINE TO REMAIN INTENSE FOR SEVERAL
   MORE HOURS MOVING SEWD INTO INCREASING INSTABILITY. IN
   ADDITION...FORECAST SOUNDINGS IN ERN VA THIS EVENING SHOW 30 TO 35
   KT OF DEEP LAYER SHEAR SUGGESTING THE LINE SHOULD REMAIN
   MULTICELLULAR AND CONTAIN AN ISOLATED SEVERE THREAT. BOWING
   LINE-SEGMENTS SHOULD HAVE A THREAT FOR WIND DAMAGE BUT A HAIL THREAT
   MAY ALSO EXIST WITH THE MORE INTENSE CELLS EMBEDDED IN THE LINE.
   
   ..BROYLES.. 08/25/2011
   
   
   ATTN...WFO...AKQ...MHX...LWX...RAH...RNK...
   
   LAT...LON   38427659 37667809 37267874 36667852 36287780 36147719
               36007643 35967583 36097558 36487560 37087576 37787522
               38307519 38427659