173 
WWUS20 KWNS 021052
SEL1  
SPC WW 021052
IAZ000-MNZ000-NEZ000-SDZ000-021400-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH - NUMBER 641 
NWS STORM PREDICTION CENTER NORMAN OK 
552 AM CDT THU SEP 2 2010

THE NWS STORM PREDICTION CENTER HAS CANCELLED 
SEVERE THUNDERSTORM WATCH NUMBER 641 ISSUED AT 115 AM CDT FOR PORTIONS OF

         IOWA
         MINNESOTA
         NEBRASKA
         SOUTH DAKOTA

170 
WOUS64 KWNS 021052
WOU1  

SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 641
NWS STORM PREDICTION CENTER NORMAN OK
552 AM CDT THU SEP 02 2010

SEVERE THUNDERSTORM WATCH 641 IS NO LONGER IN EFFECT.

IAZ000-MNZ000-NEZ000-SDZ000-021400-
/O.CAN.KWNS.SV.A.0641.000000T0000Z-100902T1400Z/

NO COUNTIES OR PARISHES REMAIN IN THE WATCH.

$$

ATTN...WFO...FSD...LBF...OAX...



 

152 
WWUS40 KWNS 020611
WWP1  

SEVERE THUNDERSTORM WATCH PROBABILITIES FOR WS 0641
NWS STORM PREDICTION CENTER NORMAN OK
0111 AM CDT THU SEP 02 2010

WS 0641
PROBABILITY TABLE:
PROB OF 2 OR MORE TORNADOES                        :  20%
PROB OF 1 OR MORE STRONG /F2-F5/ TORNADOES         :  05%
PROB OF 10 OR MORE SEVERE WIND EVENTS              :  20%
PROB OF 1 OR MORE WIND EVENTS >= 65 KNOTS          : <05%
PROB OF 10 OR MORE SEVERE HAIL EVENTS              :  40%
PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES          :  10%
PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS :  70%

&&
ATTRIBUTE TABLE:
MAX HAIL /INCHES/                            : 2.0
MAX WIND GUSTS SURFACE /KNOTS/               : 50
MAX TOPS /X 100 FEET/                        : 450
MEAN STORM MOTION VECTOR /DEGREES AND KNOTS/ : 27030
PARTICULARLY DANGEROUS SITUATION             : NO

&&
FOR A COMPLETE GEOGRAPHICAL DEPICTION OF THE WATCH AND
WATCH EXPIRATION INFORMATION SEE WOUS64 FOR WOU1.

$$