

837 

WWUS20 KWNS 081134

SEL8

SPC WW 081134

ILZ000-KSZ000-MOZ000-081900-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 48

NWS STORM PREDICTION CENTER NORMAN OK

635 AM CDT SUN MAR 8 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       WEST CENTRAL ILLINOIS

       FAR SOUTHEAST KANSAS

       SOUTHWEST THROUGH EAST CENTRAL MISSOURI



EFFECTIVE THIS SUNDAY MORNING AND AFTERNOON FROM 635 AM UNTIL 200

PM CDT.



TORNADOES...HAIL TO 1.5 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 NORTH AND SOUTH OF A LINE FROM 55 MILES NORTH NORTHWEST OF

JOPLIN MISSOURI TO 25 MILES NORTH OF ALTON ILLINOIS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU8).



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.



DISCUSSION...TSTMS/POSSIBLE SUPERCELLS EXPECTED TO INCREASE DURING

THE NEXT SEVERAL HOURS OVER WW AREA AS HEIGHT FALLS/DEEP ASCENT

SHARPLY INCREASE ATOP WARM SECTOR OF DEVELOPING MO SFC LOW.

STRENGTH OF LOW LVL SHEAR /50 KT/ AND EXISTING QUASI-DISCRETE STORM

STRUCTURES SUGGEST POTENTIAL FOR ISOLD TORNADOES IN ADDITION TO

BOWING SEGMENTS WITH HIGH WIND/HAIL.



AVIATION...TORNADOES AND 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

400. MEAN STORM MOTION VECTOR 24045.





...CORFIDI

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