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WWUS20 KWNS 012054

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ARZ000-MOZ000-MSZ000-TNZ000-020400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 605

NWS STORM PREDICTION CENTER NORMAN OK

350 PM CDT SAT SEP 1 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL THROUGH NORTHEAST AND EAST CENTRAL ARKANSAS

       THE MISSOURI BOOTHEEL

       NORTHWEST MISSISSIPPI

       WEST TENNESSEE



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 350 PM UNTIL

1100 PM CDT.



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 65 STATUTE

MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH NORTHWEST OF

DYERSBURG TENNESSEE TO 40 MILES EAST SOUTHEAST OF LITTLE ROCK

ARKANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 602...WW 603...WW 604...



DISCUSSION...TSTMS ARE BEGINNING TO FORM ALONG LOW-LVL CONVERGENCE

AXIS MARKING SRN FRINGE OF CIRCULATION ASSOCIATED WITH EX-HRCN

ISSAC.  ATTM IT APPEARS THAT THE STORMS ARE BEING SUPPORTED BY

NARROWING CORRIDOR OF DEEPLY-MIXED ENVIRONMENT EXTENDING E FROM OK.

THE STORMS THEREFORE INITIALLY MAY BE SOMEWHAT

OUTFLOW-DOMINANT...WITH DMGG WIND THE MAIN SVR THREAT. WITH

TIME...HOWEVER...SOME OF THE STORMS MAY TAP RICHER...MORE

STRONGLY-SHEARED LOW-LVL ENVIRONMENT OVER ERN AR/W TN. THIS MAY

FOSTER AN INCREASING RISK FOR LOW-LVL MESOS/TORNADOES IN ADDITION TO

CONTINUING RISK FOR DMGG WIND WITH SMALL BOWS/LEWPS IN EVENTUAL BKN

SQLN.



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 550.

MEAN STORM MOTION VECTOR 25030.





...CORFIDI

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