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976 

WWUS20 KWNS 090059

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ARZ000-KSZ000-MOZ000-OKZ000-090800-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 751

NWS STORM PREDICTION CENTER NORMAN OK

755 PM CDT MON AUG 8 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WESTERN AND NORTHERN ARKANSAS

       FAR SOUTHEAST KANSAS

       FAR SOUTHWEST MISSOURI

       CENTRAL AND EASTERN OKLAHOMA



EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 755 PM UNTIL

300 AM CDT.



HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 125

STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES NORTHWEST OF

SPRINGFIELD MISSOURI TO 60 MILES SOUTHEAST OF CHICKASHA OKLAHOMA.

 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU1).



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 746...WW 747...WW

748...WW 750...



DISCUSSION...TSTMS EXPECTED TO CONTINUE FORMING ALONG SLOWLY

PROGRESSIVE SW-NE COLD FRONT THROUGH SW/CNTRL/N CNTRL OK THROUGH

LATE THIS EVE.  AS SWLY LLJ NOCTURNALLY STRENGTHENS...OTHER STORMS

EXPECTED TO INCREASE/DEVELOP ALONG AND N OF STALLED WNW-ESE OUTFLOW

BOUNDARY IN NE OK/WRN AR...AND ALONG DEEPER OUTFLOW BOUNDARY

EXTENDING WNW/ESE ACROSS SE KS AND SW MO.  DEEP WNWLY SHEAR...AND

ASCENT WITH SRN FRINGE OF UPR IMPULSE CROSSING THE CNTRL

PLNS...APPEAR AMPLE FOR AMALGAMATION OF STORMS INTO CLUSTERS WITH

EMBEDDED BOWING SEGMENTS.  THESE MAY YIELD A FEW SWATHS OF DMGG WIND

IN ADDITION TO MARGINALLY SVR HAIL.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

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

MOTION VECTOR 32030.





...CORFIDI

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