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Mesoscale Discussion 1589
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   MESOSCALE DISCUSSION 1589
   NWS STORM PREDICTION CENTER NORMAN OK
   0753 PM CDT WED AUG 20 2014

   AREAS AFFECTED...S-CNTRL ND...N-CNTRL SD

   CONCERNING...SEVERE THUNDERSTORM WATCH 469...

   VALID 210053Z - 210230Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 469
   CONTINUES.

   SUMMARY...A MARGINAL SVR THREAT WILL PERSIST ACROSS WW 469 FOR THE
   NEXT HOUR OR TWO. PRIMARY THREAT IS LARGE HAIL WITH SOME DAMAGING
   WIND GUSTS ALSO POSSIBLE.

   DISCUSSION...STRONG TSTM IN CORSON COUNTY IS EXPECTED TO PERSIST AS
   IT CONTINUES EWD ACROSS N-CNTRL SD. GOES SUPER RAPID SCAN SATELLITE
   IMAGERY DEPICTS THE WARM FRONT EXTENDING WEST TO EAST FROM JUST S OF
   WBG TO NEAR ATY WELL. THIS BOUNDARY MAY ACT TO STRENGTHEN THE TSTM
   IN CORSON COUNTY AS IT MOVES EWD. HOWEVER...GIVEN THE BEST LARGE
   SCALE FORCING REMAINS N /ACROSS NWRN ND/ AND BOUNDARY LAYER
   STABILIZATION WILL QUICKLY INCREASE...CONFIDENCE IN AN INCREASE IN
   STORM STRENGTH AND/OR COVERAGE IS LOW. SOME SVR WIND AND HAIL IS
   STILL POSSIBLE BUT TRENDS ARE GENERALLY EXPECTED TO DECREASE OVER
   THE NEXT SEVERAL HOURS.

   ..MOSIER.. 08/21/2014


   ATTN...WFO...FSD...ABR...BIS...UNR...

   LAT...LON   46800319 47370160 47059964 44809826 43929966 44120202
               46800319 

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Page last modified: August 21, 2014
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