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Mesoscale Discussion 2175
MD 2175 graphic
   
   MESOSCALE DISCUSSION 2175
   NWS STORM PREDICTION CENTER NORMAN OK
   0525 PM CDT SUN AUG 17 2003
   
   AREAS AFFECTED...SRN VA THROUGH NC AND NWRN SC
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 866...
   
   VALID 172225Z - 180030Z
   
   THREAT FOR ISOLATED WET MICRO BURSTS EXPECTED TO PERSIST THROUGH
   EARLY EVENING. ACTIVITY SHOULD BEGIN A GRADUAL DECREASE WITH LOSS OF
   HEATING.
   
   WV IMAGERY SHOWS AREA OF MID/UPPER DRYING ASSOCIATED WITH LARGER
   SCALE SUBSIDENCE SPREADING SEWD THROUGH MUCH OF VA AND INTO NRN NC.
   AN UPSTREAM SHORTWAVE TROUGH CONTINUES SEWD THROUGH BASE OF UPPER
   TROUGH INTO ERN KY. AT THE SURFACE...NUMEROUS OUTFLOW BOUNDARIES
   EXIST IN WARM SECTOR S OF WEAK SURFACE FRONT THAT EXTENDS ACROSS SRN
   VA. THE ATMOSPHERE REMAINS MODERATELY UNSTABLE ALONG AND SOUTH OF
   THIS BOUNDARY. SLIGHTLY COOLER MID LEVEL TEMPERATURES EXIST ON SRN
   PORTION OF UPPER TROUGH ACROSS VA INTO NRN NC.
   HOWEVER...THERMODYNAMIC PROFILES ARE STILL SOMEWHAT WARM WITH
   MARGINAL LAPSE RATES...AND THIS IS LIMITING UPDRAFT STRENGTH AND
   OVERALL HAIL/SEVERE POTENTIAL. LEADING EDGE OF MID LEVEL DRYING
   SPREADING SEWD THROUGH SRN VA INTO NRN NC MAY ENHANCE POTENTIAL FOR
   ISOLATED WET MICRO BURSTS AS CLUSTERS OF MULTICELL STORMS DEVELOP
   SEWD NEXT FEW HOURS. STORMS WILL CONTINUE TO DECREASE FROM THE N
   ACROSS VA AS DEEPER DRYING ASSOCIATED WITH STRONGER SUBSIDENCE
   DEVELOPS SWD.
   
   ..DIAL.. 08/17/2003
   
   
   ATTN...WFO...AKQ...MHX...LWX...RAH...RNK...CAE...GSP...MRX...
   
   36507582 35787564 35507772 35097954 34738119 34498176
   35348183 36028180 36728178 37098074 37327961 37657864
   37567733 37117636 
   
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