SWOMCD
SPC MCD 020428
MNZ000-IAZ000-SDZ000-NEZ000-020530-
MESOSCALE DISCUSSION 1779
NWS STORM PREDICTION CENTER NORMAN OK
1128 PM CDT WED SEP 01 2010
AREAS AFFECTED...ERN SD AND VICINITY
CONCERNING...SEVERE THUNDERSTORM WATCH 640...
VALID 020428Z - 020530Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 640
CONTINUES.
SEVERE THREAT CONTINUES ACROSS E CENTRAL AND SERN SD.
LATEST RADAR LOOP SHOWS THE STRONGEST STORMS ONGOING ACROSS E
CENTRAL SD ATTM...WITHIN A BAND EXTENDING FROM SRN CLARK COUNTY SD
NEWD INTO W CENTRAL MN. THIS BAND OF STORMS APPEARS SLIGHTLY
ELEVATED ABOVE A SHALLOW STABLE LAYER...JUST N OF A WEAK SURFACE
WARM FRONT OVER SERN SD. WHILE AN ISOLATED WIND GUST COULD REACH
THE SURFACE...ATTM IT APPEARS THAT LARGE HAIL WILL BE THE PRIMARY
SEVERE THREAT WITH THIS BAND OF STORMS. FURTHER...WITH INSTABILITY
DECREASING WITH EWD EXTENT...EXPECT THE STORMS TO WEAKEN AS THEY
CONTINUE TO MOVE INTO MN.
FARTHER S...REDEVELOPMENT OF ISOLATED STORMS CONTINUES -- WITHIN A
MORE UNSTABLE AIRMASS IN PLACE ACROSS THIS AREA. AS THE SURFACE
BOUNDARY CONTINUES SHIFTING EWD...ADDITIONAL STORM DEVELOPMENT
REMAINS POSSIBLE -- AND THUS ISOLATED SEVERE THREAT CONTINUES.
..GOSS.. 09/02/2010
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...MPX...FSD...OAX...ABR...LBF...
LAT...LON 42929933 43169951 44539862 45419629 43789582 42999557
42799673 42929933
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