

562 

WWUS20 KWNS 241718

SEL4

SPC WW 241718

IAZ000-ILZ000-MOZ000-250000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 354

NWS STORM PREDICTION CENTER NORMAN OK

1215 PM CDT MON JUN 24 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTH CENTRAL AND SOUTHEASTERN IOWA

  NORTHWESTERN ILLINOIS

  NORTHERN MISSOURI



* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 1215 PM UNTIL

  700 PM CDT.



* PRIMARY THREATS INCLUDE...

  NUMEROUS DAMAGING WIND GUSTS LIKELY WITH A FEW SIGNIFICANT GUSTS

    TO 80 MPH POSSIBLE

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

    INCHES IN DIAMETER POSSIBLE

  A FEW TORNADOES POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 15 MILES NORTH OF

LAMONI IOWA TO 10 MILES EAST NORTHEAST OF BLOOMINGTON ILLINOIS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU4).



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...FURTHER UPSCALE CONVECTIVE GROWTH AND INTENSIFICATION

OF THE ONGOING MESOSCALE CONVECTIVE SYSTEM ACROSS SOUTHERN IOWA AND

NORTHERN MISSOURI APPEARS LIKELY DURING THE NEXT FEW HOURS.  AS THE

ASSOCIATED SURFACE COLD POOL STRENGTHENS/DEEPENS...BROADER SCALE

STRONG/DAMAGING WIND GUSTS ARE EXPECTED ACROSS SOUTHEAST IOWA AND

PARTS OF NORTHEAST MISSOURI...INTO NORTHWESTERN ILLINOIS BY 21-23Z.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

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

MOTION VECTOR 27035.





...KERR

