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852 

WWUS20 KWNS 040356

SEL6

SPC WW 040356

MNZ000-WIZ000-040900-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 556

NWS STORM PREDICTION CENTER NORMAN OK

1100 PM CDT FRI AUG 3 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHEAST MINNESOTA

       WESTERN WISCONSIN



EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 1100 PM

UNTIL 400 AM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75

STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES NORTH

NORTHWEST OF EAU CLAIRE WISCONSIN TO 15 MILES EAST SOUTHEAST OF

ROCHESTER MINNESOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 554...WW 555...



DISCUSSION...A RELATIVELY FAST MOVING SQUALL LINE WILL TRACK

EASTWARD INTO WESTERN WI DURING THE NEXT FEW HOURS.  THIS LINE HAS

PRODUCE LOCALIZED DAMAGING WINDS DURING THE PAST FEW HOURS...AND MAY

CONTINUE TO DO SO GIVEN BOWING LINE SEGMENTS AND SUFFICIENT

INSTABILITY.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 27040.





...HART

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