

000 

WWUS20 KWNS 061712

SEL3

SPC WW 061712

ILZ000-MOZ000-070000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 473

NWS STORM PREDICTION CENTER NORMAN OK

1215 PM CDT FRI JUN 6 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHERN AND CENTRAL ILLINOIS

       SOUTHERN AND EASTERN MISSOURI



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 1215 PM UNTIL

700 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 75 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 30 MILES NORTH NORTHWEST OF

HARRISON ARKANSAS TO 35 MILES EAST NORTHEAST OF MATTOON ILLINOIS.

 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU3).



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 472...



DISCUSSION...SCATTERED THUNDERSTORMS WILL CONTINUE TO INCREASE IN

COVERAGE AND INTENSITY THIS AFTERNOON FROM SOUTHWEST MO INTO

SOUTHERN/CENTRAL IL.  MOIST AND MODERATELY UNSTABLE

AIRMASS...COUPLED WITH STRONG VERTICAL SHEAR PARAMETERS WILL PROMOTE

SUPERCELL STORMS CAPABLE OF DAMAGING WINDS AND HAIL.  SOME POTENTIAL

FOR ISOLATED TORNADOES WILL ALSO EXIST WITH MORE ISOLATED STORMS.



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.





...HART

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