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675 

WWUS20 KWNS 311936

SEL1

SPC WW 311936

IAZ000-MIZ000-MNZ000-WIZ000-LSZ000-010300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 261

NWS STORM PREDICTION CENTER NORMAN OK

235 PM CDT FRI MAY 31 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  NORTHEAST IOWA

  WESTERN UPPER MICHIGAN

  EASTERN MINNESOTA

  WESTERN AND CENTRAL WISCONSIN

  LAKE SUPERIOR



* EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 235 PM UNTIL

  1000 PM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL LARGE HAIL EVENTS LIKELY WITH A FEW VERY LARGE HAIL

    EVENTS TO 2 INCHES IN DIAMETER POSSIBLE

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  A FEW TORNADOES POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 95

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES NORTHWEST OF

GRAND MARAIS MINNESOTA TO 45 MILES WEST SOUTHWEST OF LONEROCK

WISCONSIN.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).



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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 260...



DISCUSSION...ISOLATED STRONG TO SEVERE THUNDERSTORMS ARE

STRENGTHENING OVER EASTERN MN AND WESTERN WI...IN A REGION OF

MODERATE INSTABILITY AND FAVORABLE SHEAR.  MULTICELL TO A FEW

SUPERCELL STORMS ARE EXPECTED WITH A RISK OF LARGE HAIL AND DAMAGING

WINDS.  ISOLATED TORNADOES CANNOT BE RULED OUT THIS

EVENING...ESPECIALLY OVER PARTS OF SOUTHERN WI WHERE LOW LEVEL

MOISTURE IS GREATEST.



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 450. MEAN STORM

MOTION VECTOR 22025.





...HART

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