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URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 586

NWS STORM PREDICTION CENTER NORMAN OK

1200 AM CDT SUN AUG 8 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHERN MINNESOTA

       WEST CENTRAL WISCONSIN



EFFECTIVE THIS SUNDAY MORNING FROM MIDNIGHT UNTIL 500 AM CDT.



TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS

TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 45 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTHWEST OF

ALEXANDRIA MINNESOTA TO 35 MILES EAST OF EAU CLAIRE WISCONSIN.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU6).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



OTHER WATCH INFORMATION...CONTINUE...WW 584...WW 585...



DISCUSSION...A FEW DISCRETE OR SEMI-DISCRETE SUPERCELLS EXPECTED TO

PERSIST IN WAA ZONE BENEATH DIFLUENT/COUPLED JET PATTERN IN SRN/ERN

MN AND WRN WI THROUGH LATER THIS MORNING.  COUPLED WITH ENVIRONMENT

OF MODERATE LOW-LVL SHEAR AND LOW LCLS...SETUP MAY YIELD ONE OR TWO

TORNADOES...IN ADDITION TO SMALL-SCALE BOWING SEGMENTS WITH HIGH

WIND/SVR HAIL.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND

GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.

MEAN STORM MOTION VECTOR 29030.





...CORFIDI

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