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639 

WWUS20 KWNS 132256

SEL4

SPC WW 132256

ARZ000-KSZ000-MOZ000-OKZ000-140500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 664

NWS STORM PREDICTION CENTER NORMAN OK

600 PM CDT SAT OCT 13 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHWEST ARKANSAS

       SOUTHEAST KANSAS

       SOUTHWEST MISSOURI

       EASTERN OKLAHOMA



EFFECTIVE THIS SATURDAY NIGHT FROM 600 PM UNTIL MIDNIGHT 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 85 STATUTE

MILES EAST AND WEST OF A LINE FROM 20 MILES NORTH NORTHWEST OF

JOPLIN MISSOURI TO 55 MILES SOUTH OF MCALESTER OKLAHOMA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU4).



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 661...WW 662...WW 663...



DISCUSSION...A BROKEN LINE OF STRONG/SEVERE STORMS IS TRACKING

RAPIDLY NORTHEASTWARD.  STRONG LOW/MID LEVEL WINDS AND SUFFICIENT

CAPE VALUES WILL PROVIDE A RISK OF ISOLATED INTENSE STORMS THROUGH

THE EVENING...ALONG WITH THE POTENTIAL FOR A TORNADO OR TWO.



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

500. MEAN STORM MOTION VECTOR 23035.





...HART

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