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WWUS20 KWNS 151728

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ILZ000-INZ000-MOZ000-160200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 321

NWS STORM PREDICTION CENTER NORMAN OK

1230 PM CDT TUE JUN 15 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL AND SOUTHERN ILLINOIS

       CENTRAL AND SOUTHERN INDIANA

       EAST CENTRAL MISSOURI



EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 1230 PM UNTIL

900 PM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 65 MILES WEST

NORTHWEST OF FARMINGTON MISSOURI TO 15 MILES SOUTHEAST OF MUNCIE

INDIANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).



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...MULTIPLE CLUSTERS OF THUNDERSTORMS ARE BEGINNING TO

INTENSIFY ACROSS PORTIONS OF MO/IL.  THESE STORMS ARE EXPECTED TO

BECOME SEVERE THIS AFTERNOON WITH A RISK OF LARGE HAIL AND DAMAGING

WINDS.  ACTIVITY OVER EAST CENTRAL MO MAY GROW UPSCALE INTO A BOW

ECHO WITH THE RISK OF WIDESPREAD DAMAGING WINDS.



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 25035.





...HART

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