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Mesoscale Discussion 2190
MD 2190 graphic
   
   MESOSCALE DISCUSSION 2190
   NWS STORM PREDICTION CENTER NORMAN OK
   0239 PM CDT WED SEP 08 2004
   
   AREAS AFFECTED...CNTRL/ERN VA...ERN NC
   
   CONCERNING...TORNADO WATCH 814...
   
   VALID 081939Z - 082145Z
   
   CONTINUE WW.  POTENTIAL FOR ADDITIONAL ISOLATED TORNADOES
   CONTINUES...BROADER SCALE RISK OF DAMAGING WIND GUSTS MAY INCREASE A
   BIT.
   
   WARM...VERY MOIST AND BUOYANT BOUNDARY LAYER AHEAD OF MID-LEVEL
   REMNANTS OF FRANCES WILL REMAIN SUPPORTIVE OF DEEP CONVECTIVE
   DEVELOPMENT INTO THE EARLY EVENING HOURS.  HIGHEST PROBABILITIES FOR
   SUPERCELLS WITH TORNADOES LIKELY WILL REMAIN IN AREAS NEAR/NORTH OF
   RICHMOND VA INTO THE VICINITY OF WASHINGTON D.C AND
   CHARLOTTESVILLE...WHERE THERE HAS BEEN SUNSHINE AND  LOW-LEVEL WARM
   ADVECTION/VEERING WIND PROFILES WITH HEIGHT ARE MOST PRONOUNCED.  
   
   RISK OF ISOLATED TORNADOES WILL ALSO EXIST WITH NORTH-SOUTH BANDS OF
   CONVECTION SLOWLY SPREADING NORTHEASTWARD INTO CENTRAL VIRGINIA AND
   NORTH CAROLINA...JUST AHEAD OF MID-LEVEL SUBSIDENCE/DRYING EVIDENT
   IN WATER VAPOR IMAGERY.  HOWEVER...WITH HODOGRAPHS MORE
   UNIDIRECTIONAL NEAR THESE LINES...DAMAGING WIND GUSTS MAY BE PRIMARY
   THREAT AS MOMENTUM ASSOCIATED WITH 40 KT LOW-LEVEL JET IS
   TRANSFERRED TOWARD SURFACE.  ACTIVITY MAY GRADUALLY CONSOLIDATE INTO
   ONE LINE AS IT PROGRESSES TOWARD THE WASHINGTON D.C./NORFOLK BY
   AROUND 09/00Z.
   
   ..KERR.. 09/08/2004
   
   
   ATTN...WFO...PHI...AKQ...MHX...LWX...RAH...RNK...
   
   38647844 39097751 39587656 37527604 36087678 35217792
   35807842 37407847 37987862 
   
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