SWOMCD
SPC MCD 110328
NDZ000-110500-
MESOSCALE DISCUSSION 2007
NWS STORM PREDICTION CENTER NORMAN OK
1028 PM CDT THU SEP 10 2009
AREAS AFFECTED...CNTRL ND
CONCERNING...SEVERE THUNDERSTORM WATCH 738...
VALID 110328Z - 110500Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 738
CONTINUES.
THE THREAT FOR HAIL AND LOCALLY DAMAGING WIND GUSTS IS EXPECTED TO
CONTINUE INTO CNTRL PARTS OF WW AREA.
AS OF 03Z...MESOANALYSIS INDICATED A SURFACE LOW W OF BIS WITH
ASSOCIATED COLD FRONT EXTENDING FROM E OF MOT THROUGH THE LOW CENTER
SWWD INTO W-CNTRL SD S OF 2WX. AS OF 0320Z...STRONG TO SEVERE TSTMS
WERE OBSERVED ALONG FRONT FROM SHERIDAN...MCLEAN AND BURLEIGH
COUNTIES ND TO CORSON COUNTY SD. MODIFICATION OF 00Z BIS SOUNDING
FOR CURRENT SURFACE CONDITIONS SUGGESTS THAT BOUNDARY LAYER IS
GRADUALLY STABILIZING OWING TO THE ONSET OF NOCTURNAL COOLING.
HOWEVER...INCREASING DEEP ASCENT IN ADVANCE OF SHORT WAVE TROUGH AND
FRONTAL CONVERGENCE SHOULD SERVE TO MAINTAIN ONGOING STORMS EWD
ACROSS WW AREA WITH A CONTINUED THREAT FOR ISOLATED HAIL AND LOCALLY
STRONG WIND GUSTS.
..MEAD.. 09/11/2009
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...FGF...BIS...
LAT...LON 46260203 47690092 48550015 48959932 48869877 48119884
46909915 46459978 45990071 46260203
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