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523 

WWUS20 KWNS 080908

SEL6

SPC WW 080908

ARZ000-KSZ000-MOZ000-OKZ000-081500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 486

NWS STORM PREDICTION CENTER NORMAN OK

400 AM CDT THU AUG 8 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  NORTHWEST ARKANSAS

  SOUTHEAST KANSAS

  FAR SOUTHWEST MISSOURI

  NORTHEAST OKLAHOMA



* EFFECTIVE THIS THURSDAY MORNING FROM 400 AM UNTIL 1000 AM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES NORTHWEST OF

EMPORIA KANSAS TO 25 MILES WEST SOUTHWEST OF FAYETTEVILLE

ARKANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 485...



DISCUSSION...WEAKLY-ORGANIZED ARC OF STRONG TO SVR STORMS NOW OVER S

CNTRL KS/N CNTRL OK EXPECTED TO CONTINUE MAINLY ENEWD...SUPPORTED BY

MODEST JET STREAK ON S SIDE OF APPARENT MCV NEAR P28. GIVEN HIGH PW

/AROUND 2 INCHES/ AND LIGHT ELY LOW-LVL FLOW BENEATH MODEST WLY

MID-LVL WINDS...INTERSECTION OF THIS BAND OF STORMS WITH ROUGHLY

W/E-ORIENTED LINE OF WAA ACTIVITY ALONG THE KS-OK BORDER MAY INDUCE

ADDITIONAL BOWING/SURGING ELEMENTS LATER THIS MORNING. THESE MAY

PRODUCE SPORADIC...LOCALLY DMGG WIND NEWD ACROSS THE FLINT

HILLS...AND EWD TO TRI-STATE AREA OF KS/OK/MO. FARTHER S...TRANSIENT

FORWARD-PROPAGATING SEGMENTS IN WAA BAND MAY EXTEND AN ISOLD DMGG

WIND THREAT SEWD ACROSS NW AR.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM

MOTION VECTOR 23025.





...CORFIDI

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