

041 

WWUS20 KWNS 020448

SEL3

SPC WW 020448

ILZ000-MOZ000-021000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 243

NWS STORM PREDICTION CENTER NORMAN OK

1150 PM CDT TUE JUN 1 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WEST CENTRAL AND CENTRAL ILLINOIS

       EAST CENTRAL MISSOURI



EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 1150 PM

UNTIL 500 AM CDT.



HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65

STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH

NORTHEAST OF PEORIA ILLINOIS TO 55 MILES EAST OF COLUMBIA

MISSOURI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).



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 242...



DISCUSSION...WELL-FORMED MCS WILL CONTINUE ESEWD FOR THE NEXT FEW

HOURS WITH AN ATTENDANT THREAT FOR DAMAGING WINDS.  A CONTINUATION

OF MODERATE INSTABILITY AND RELATIVELY WEAK CONVECTIVE INHIBITION

WILL HELP MAINTAIN THE CONVECTION AS IT CROSSES THE MS RIVER AND

MOVES INTO WRN/CENTRAL IL.



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 30035.





...THOMPSON

