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URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 117

NWS STORM PREDICTION CENTER NORMAN OK

905 PM CDT FRI APR 30 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL AND SOUTHERN ILLINOIS

       FAR WESTERN KENTUCKY

       SOUTHEASTERN AND EAST CENTRAL MISSOURI



EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 905 PM

UNTIL 300 AM CDT.



TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE

MILES EAST AND WEST OF A LINE FROM 30 MILES NORTHWEST OF

CHAMPAIGN ILLINOIS TO 20 MILES SOUTH SOUTHEAST OF POPLAR BLUFF

MISSOURI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 115. WATCH NUMBER 115 WILL NOT BE IN EFFECT AFTER

905 PM CDT. CONTINUE...WW 116...



DISCUSSION...ONGOING ORGANIZED STORMS ACROSS SERN MO AND NRN AR WILL

CONTINUE TO TRACK NEWD INTO THE MID MS VALLEY THIS EVENING AND

OVERNIGHT.  AIR MASS IS MODERATELY UNSTABLE AND STRONGLY

SHEARED...SUPPORTING A THREAT FOR ISOLATED TORNADOES.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 23540.





...PETERS/THOMPSON

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