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Mesoscale Discussion 2290
MD 2290 graphic
   
   MESOSCALE DISCUSSION 2290
   NWS STORM PREDICTION CENTER NORMAN OK
   0403 PM CDT WED AUG 27 2003
   
   AREAS AFFECTED...MID/UPPER OH VLY INTO THE NRN/CNTRL WV
   MTNS...SCNTRL PA...NRN VA...WRN/CNTRL MD AND THE DISTRICT OF
   COLUMBIA
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 901...902...
   
   VALID 272103Z - 272230Z
   
   LARGE COMPLEX OF TSTMS CONTINUES TO TRANSLATE ACROSS THE CNTRL
   APPALACHIANS LATE THIS AFTERNOON AND WILL BE MOVING INTO THE MIDDLE
   ATLANTIC REGION EARLY THIS EVENING.
   
   INDIVIDUAL CELLS WITHIN THIS MCS HAVE SHOWN A TENDENCY TO BOW...
   ESPECIALLY FROM WRN MD INTO NRN WV THE LAST HOUR OR SO.  THE TSTMS
   HAVE BEEN MOVING INTO AN AREA WHERE MIDLEVEL FLOW IS STRONGER THAN
   FARTHER WEST...ON THE ORDER OF 35-40 KTS.  THUS...THE WIND DAMAGE
   POTENTIAL COULD BE INCREASING DOWNSTREAM INTO THE ERN PNHDL OF
   WV...NRN VA AND THE DISTRICT OF COLUMBIA FOR THE NEXT FEW HOURS. 
   THE STRONGEST TSTMS WITH THE HIGHEST PROBABILITY FOR WIND DAMAGE 
   WILL TRACK ALONG/SOUTH OF AN OLD OUTFLOW BOUNDARY EXTENDING FROM
   KW99(MOOREFIELD WV)-KOKV-KDCA.
   
   OTHERWISE...TO THE WEST...TSTMS HAVE BACKBUILT ON THE NRN AND SRN
   EDGES OF THE MCS ACROSS SWRN PA AND ENTERING THE KANAWHA VLY OF WV. 
   THESE TSTMS MAY PRODUCE HAIL AND DAMAGING WINDS AS WELL...ESPECIALLY
   ACROSS CNTRL WV WHERE INSTABILITY IS STRONGER.
   
   ..RACY.. 08/27/2003
   
   
   ATTN...WFO...PHI...AKQ...CTP...LWX...PBZ...RLX...
   
   38318243 38878117 39468055 40298087 40317915 39577594
   37637653 38307986 
   
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