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015 

WWUS20 KWNS 291957

SEL2

SPC WW 291957

IAZ000-MNZ000-WIZ000-300300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 242

NWS STORM PREDICTION CENTER NORMAN OK

255 PM CDT WED MAY 29 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  EASTERN AND SOUTHERN IOWA

  SOUTHEAST MINNESOTA

  WESTERN AND CENTRAL WISCONSIN



* EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 255 PM

  UNTIL 1000 PM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  SEVERAL LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70

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

EAU CLAIRE WISCONSIN TO 45 MILES SOUTH OF KNOXVILLE IOWA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU2).



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 239...WW 240...WW 241...



DISCUSSION...MCS ONGOING ACROSS THE WATCH AREA HAS BECOME ROOTED IN

THE BOUNDARY LAYER...AND RECENT SEVERE WIND GUSTS HAVE BEEN

OBSERVED.  EXPECT THIS SYSTEM TO STRENGTHEN FURTHER AS IT PROGRESSES

NEWD AND ENCOUNTERS A MOIST AND MODERATELY UNSTABLE AIR MASS.

DAMAGING WINDS AND SOME HAIL WILL BE THE PRIMARY HAZARDS.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

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

MOTION VECTOR 23030.





...MEAD

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