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469 

WWUS20 KWNS 081922

SEL2

SPC WW 081922

ARZ000-LAZ000-MSZ000-TXZ000-090200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 262

NWS STORM PREDICTION CENTER NORMAN OK

220 PM CDT SUN JUN 8 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHERN ARKANSAS

  NORTHERN LOUISIANA

  WEST CENTRAL MISSISSIPPI

  EXTREME NORTHEAST AND EAST CENTRAL TEXAS



* EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 220 PM UNTIL

  900 PM CDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2

    INCHES IN DIAMETER POSSIBLE

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  A TORNADO OR TWO POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 60 MILES EAST

NORTHEAST OF MONROE LOUISIANA TO 35 MILES WEST NORTHWEST OF

SHREVEPORT LOUISIANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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 259...WW 260...WW 261...



DISCUSSION...STORMS ALONG THE SRN END OF THE COMMA TAIL ASSOCIATED

WITH AN EWD MOVING MVC OVER ERN OK ARE INTENSIFYING...WITH

ADDITIONAL CELLS FORMING ALONG RETREATING OUTFLOW BOUNDARY NEAR THE

AR/LA BORDER.  IN ADDITIONAL...THERE IS A CHANCE NEW CELLS MAY

DEVELOP OVER EXTREME NERN TX/SWRN AR...WITH ALL ACTIVITY SPREADING

EWD WITH TIME.  MODERATE INSTABILITY WITH MLCAPE TO 2000 J/KG

COUPLED WITH UNIDIRECTIONAL FLOW ALOFT 30-40 KT IN THE MID-LEVELS

PER KSHV VWP WILL PROMOTE SEVERE STORM POTENTIAL WITH PRIMARY

THREATS FOR DAMAGING WINDS AND LARGE HAIL.  A BRIEF TORNADO OR TWO

MAY ALSO OCCUR NEAR THE OUTFLOW BOUNDARY.



AVIATION...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 550. MEAN STORM

MOTION VECTOR 26025.





...WEISS

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