

927 

WWUS20 KWNS 132001

SEL4

SPC WW 132001

ILZ000-INZ000-MOZ000-140300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 294

NWS STORM PREDICTION CENTER NORMAN OK

300 PM CDT WED MAY 13 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF SOUTHERN ILLINOIS

       SMALL PART OF SOUTHWEST INDIANA

       PARTS OF EASTERN MISSOURI



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 300 PM UNTIL

1000 PM 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 60 STATUTE

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

FARMINGTON MISSOURI TO 45 MILES SOUTH SOUTHEAST OF TERRE HAUTE

INDIANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).



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...CONTINUE...WW 293...



DISCUSSION...MCV ACROSS SERN MO IS NOW MOVING INTO AN AREA OF MDT

INSTABILITY AND LITTLE REMAINING CINH.  WITH STRONG VEERING SHEAR

PROFILES IN LOW LEVELS NOTED ON PAH AND EVV 88/D VADS...SUPERCELLS

CAN BE EXPECTED AS SYSTEM MOVES EWD.  IN ADDITION E/W BOUNDARY WILL

ENHANCE SHEAR AND TORNADO POTENTIAL EWD INTO SWRN IND.



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 25035.





...HALES

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