

044 

WWUS20 KWNS 022322

SEL3

SPC WW 022322

ARZ000-MOZ000-MSZ000-TNZ000-030500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 113

NWS STORM PREDICTION CENTER NORMAN OK

620 PM CDT THU APR 2 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHEAST ARKANSAS

       THE MISSOURI BOOTHEEL

       NORTHERN MISSISSIPPI

       WEST TENNESSEE



EFFECTIVE THIS THURSDAY NIGHT FROM 620 PM UNTIL MIDNIGHT 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 EAST AND WEST OF A LINE FROM 50 MILES NORTHEAST OF

DYERSBURG TENNESSEE TO 50 MILES WEST OF COLUMBUS MISSISSIPPI.

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 108...WW 109...WW

110...WW 111...WW 112...



DISCUSSION...LOW-TOPPED LINE OF STORMS FORMING IMMEDIATELY AHEAD OF

EJECTING UPR VORT MAX EXPECTED TO STRENGTHEN AS REGION FURTHER

DESTABILIZES WITH STRONG ASCENT/MID LVL COLD ADVECTION.  WHILE WIND

PROFILES HAVE BEEN SOMEWHAT DISRUPTED BY PREVIOUS

CONVECTION...SUFFICIENT LOW LVL SHEAR EXISTS TO SUPPORT A THREAT FOR

ISOLD TORNADOES WITH ANY SEMI-DISCRETE SUPERCELLS...IN ADDITION TO

LARGE HAIL/HIGH WIND.



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

450. MEAN STORM MOTION VECTOR 21040.





...CORFIDI

