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Mesoscale Discussion 261
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   MESOSCALE DISCUSSION 0261
   NWS STORM PREDICTION CENTER NORMAN OK
   0626 PM CDT THU APR 09 2015

   AREAS AFFECTED...PORTIONS OF WRN/CNTRL PA

   CONCERNING...SEVERE THUNDERSTORM WATCH 45...

   VALID 092326Z - 100030Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 45
   CONTINUES.

   SUMMARY...A BOW ECHO WILL CONTINUE TO PROGRESS EAST ACROSS WRN/CNTRL
   PA. HOWEVER...WHILE THE POTENTIAL FOR AN ISOLATED STRONG WIND GUST
   CANNOT BE ELIMINATED...THE WIND THREAT SHOULD RAPIDLY DIMINISH TO
   THE EAST.

   DISCUSSION...AS OF 23Z...REGIONAL WSR-88D MOSAIC SHOWED A BOWING
   LINE...WITH AN EMBEDDED MESOVORTEX...QUICKLY PUSHING EWD ACROSS
   WRN/CNTRL PA. WHILE A GUST TO 48 KT WAS REPORTED EARLIER AT
   KAGC...THE LINE IS RAPIDLY PROGRESSING INTO AN ENVIRONMENT WITH A
   STABLE SFC LAYER...WITH TEMPS IN THE 40S. THEREFORE...THE THREAT FOR
   STRONG SFC WIND GUSTS SHOULD CONTINUE TO DIMINISH STEADILY OVER THE
   NEXT HOUR OR TWO AND DOWNSTREAM WW IS NOT NECESSARY.

   ..PICCA.. 04/09/2015


   ATTN...WFO...CTP...LWX...PBZ...

   LAT...LON   39797908 40087900 40427855 40767844 40977862 41137901
               41237914 41367912 41387832 40897770 40317772 39947789
               39707833 39797908 

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