360 
WWUS20 KWNS 020703
SEL0  
SPC WW 020703
SDZ000-020700-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH - NUMBER 640 
NWS STORM PREDICTION CENTER NORMAN OK 
203 AM CDT THU SEP 2 2010

THE NWS STORM PREDICTION CENTER HAS CANCELLED 
SEVERE THUNDERSTORM WATCH NUMBER 640 ISSUED AT 640 PM CDT FOR PORTIONS OF

         SOUTH DAKOTA

397 
WOUS64 KWNS 020703
WOU0  

SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 640
NWS STORM PREDICTION CENTER NORMAN OK
203 AM CDT THU SEP 02 2010

SEVERE THUNDERSTORM WATCH 640 IS NO LONGER IN EFFECT.

SDZ000-020700-
/O.EXP.KWNS.SV.A.0640.000000T0000Z-100902T0700Z/

NO COUNTIES OR PARISHES REMAIN IN THE WATCH.

$$

ATTN...WFO...FSD...ABR...



 

957 
WWUS40 KWNS 012343
WWP0  

SEVERE THUNDERSTORM WATCH PROBABILITIES FOR WS 0640
NWS STORM PREDICTION CENTER NORMAN OK
0643 PM CDT WED SEP 01 2010

WS 0640
PROBABILITY TABLE:
PROB OF 2 OR MORE TORNADOES                        :  10%
PROB OF 1 OR MORE STRONG /F2-F5/ TORNADOES         :  05%
PROB OF 10 OR MORE SEVERE WIND EVENTS              :  50%
PROB OF 1 OR MORE WIND EVENTS >= 65 KNOTS          :  20%
PROB OF 10 OR MORE SEVERE HAIL EVENTS              :  20%
PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES          : <05%
PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS :  70%

&&
ATTRIBUTE TABLE:
MAX HAIL /INCHES/                            : 1.5
MAX WIND GUSTS SURFACE /KNOTS/               : 60
MAX TOPS /X 100 FEET/                        : 450
MEAN STORM MOTION VECTOR /DEGREES AND KNOTS/ : 25035
PARTICULARLY DANGEROUS SITUATION             : NO

&&
FOR A COMPLETE GEOGRAPHICAL DEPICTION OF THE WATCH AND
WATCH EXPIRATION INFORMATION SEE WOUS64 FOR WOU0.

$$