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592 

WWUS20 KWNS 262242

SEL7

SPC WW 262242

MNZ000-NDZ000-SDZ000-WIZ000-LSZ000-270600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 497

NWS STORM PREDICTION CENTER NORMAN OK

545 PM CDT MON AUG 26 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  NORTH CENTRAL MINNESOTA

  SOUTHEAST NORTH DAKOTA

  NORTHEAST SOUTH DAKOTA

  NORTHWEST WISCONSIN

  LAKE SUPERIOR



* EFFECTIVE THIS MONDAY AFTERNOON AND TUESDAY MORNING FROM 545 PM

  UNTIL 100 AM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH LIKELY

  SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 2

    INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 50

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 115 MILES WEST

SOUTHWEST OF DETROIT LAKES MINNESOTA TO 10 MILES SOUTHEAST OF

IRONWOOD MICHIGAN.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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.



&&



DISCUSSION...THUNDERSTORMS ARE INCREASING ACROSS NORTH CENTRAL MN IN

A REGION OF STRONG INSTABILITY AND FAVORABLE DEEP LAYER SHEAR.

STORMS ARE EXPECTED TO PERSIST THROUGH THE EVENING AND SPREAD

EAST-SOUTHEASTWARD ACROSS THE WATCH AREA.  DAMAGING WINDS APPEAR TO

BE THE PRIMARY THREAT WITH THE STRONGEST STORMS.



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 550. MEAN STORM

MOTION VECTOR 28030.





...HART

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