Severe Storm Outlook Narrative (AC)
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000
ACUS11 KWNS 210054
SWOMCD
SPC MCD 210053
SDZ000-NDZ000-210230-

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

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

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

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



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