843 
WWUS20 KWNS 030407
SEL3  
SPC WW 030407
ILZ000-MOZ000-030500-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH - NUMBER 643 
NWS STORM PREDICTION CENTER NORMAN OK 
1107 PM CDT THU SEP 2 2010

THE NWS STORM PREDICTION CENTER HAS CANCELLED 
SEVERE THUNDERSTORM WATCH NUMBER 643 ISSUED AT 445 PM CDT FOR PORTIONS OF

         ILLINOIS
         MISSOURI

845 
WOUS64 KWNS 030407
WOU3  

SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 643
NWS STORM PREDICTION CENTER NORMAN OK
1107 PM CDT THU SEP 02 2010

SEVERE THUNDERSTORM WATCH 643 IS NO LONGER IN EFFECT.

ILZ000-MOZ000-030500-
/O.CAN.KWNS.SV.A.0643.000000T0000Z-100903T0500Z/

NO COUNTIES OR PARISHES REMAIN IN THE WATCH.

$$

ATTN...WFO...LSX...SGF...EAX...ILX...LOT...



 

903 
WWUS40 KWNS 022147
WWP3  

SEVERE THUNDERSTORM WATCH PROBABILITIES FOR WS 0643
NWS STORM PREDICTION CENTER NORMAN OK
0447 PM CDT THU SEP 02 2010

WS 0643
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 :  80%

&&
ATTRIBUTE TABLE:
MAX HAIL /INCHES/                            : 1.5
MAX WIND GUSTS SURFACE /KNOTS/               : 60
MAX TOPS /X 100 FEET/                        : 550
MEAN STORM MOTION VECTOR /DEGREES AND KNOTS/ : 26025
PARTICULARLY DANGEROUS SITUATION             : NO

&&
FOR A COMPLETE GEOGRAPHICAL DEPICTION OF THE WATCH AND
WATCH EXPIRATION INFORMATION SEE WOUS64 FOR WOU3.

$$