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366 

WWUS20 KWNS 230229

SEL9

SPC WW 230229

ARZ000-ILZ000-INZ000-KYZ000-MOZ000-MSZ000-TNZ000-231000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 749

NWS STORM PREDICTION CENTER NORMAN OK

825 PM CST MON NOV 22 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EASTERN ARKANSAS

       SOUTHERN ILLINOIS

       SOUTHWEST INDIANA

       WESTERN KENTUCKY

       SOUTHEAST MISSOURI

       NORTHWEST MISSISSIPPI

       WESTERN TENNESSEE



EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 825 PM UNTIL

400 AM CST.



TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS

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



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE

MILES EAST AND WEST OF A LINE FROM 45 MILES EAST NORTHEAST OF

MOUNT VERNON ILLINOIS TO 55 MILES EAST SOUTHEAST OF LITTLE ROCK

ARKANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).



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 746...WW 747...WW 748...



DISCUSSION...SHOWERS/TSTMS FORMING ALONG SW-NE PREFRONTAL CONFLUENCE

ZONE...AND STORMS ALONG FRONTAL BAND FARTHER NW...EXPECTED TO

PERSIST AND POSSIBLY INCREASE THROUGH EARLY TUE AS REGION IS GLANCED

BY SHORTWAVE IMPULSE NOW CROSSING KS.  STRONG WIND FIELD WITH

SUBSTANTIAL LOW-LVL DIRECTIONAL SHEAR...AND CONTINUED LOW-LL

MOISTURE INFLOW NNEWD THROUGH THE MS VLY...SUGGEST POTENTIAL FOR A

FEW SUSTAINED STORMS/SUPERCELLS.  THESE COULD YIELD MARGINALLY SVR

HAIL...LOCALLY DMGG WIND...AND /MAINLY WITH PRE-FRONTAL

ACTIVITY/...A COUPLE TORNADOES.



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

SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND

GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.

MEAN STORM MOTION VECTOR 24045.





...CORFIDI

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