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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 110

NWS STORM PREDICTION CENTER NORMAN OK

950 AM CDT TUE APR 3 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF CENTRAL AND SOUTHERN ILLINOIS

       PARTS OF WESTERN INDIANA



EFFECTIVE THIS TUESDAY MORNING AND AFTERNOON FROM 950 AM UNTIL

500 PM CDT.



HAIL TO 2.5 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 60

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 20 MILES NORTHWEST

OF ALTON ILLINOIS TO 50 MILES NORTH NORTHEAST OF BLOOMINGTON

INDIANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).



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...THIS SEVERE THUNDERSTORM WATCH REPLACES

SEVERE THUNDERSTORM WATCH NUMBER 108. WATCH NUMBER 108 WILL NOT

BE IN EFFECT AFTER 950 AM CDT. CONTINUE...WW 109...



DISCUSSION...ONGOING STG/SEVERE THUNDERSTORMS ACROSS CENTRAL IL INTO

NERN MO AHEAD OF COLD FRONT WILL CONTINUE AND LIKELY INTENSIFY AS

AIR MASS DESTABILIZED RAPIDLY EWD ACROSS MID MS VALLEY. ALONG WITH

LARGE HAIL WIND DAMAGE WILL INCREASE AS STORMS EVOLVE INTO SHORT

LINE SEGMENTS/BOWS.



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

TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

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

MOTION VECTOR 26030.





...HALES

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