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543 

WWUS20 KWNS 271849

SEL7

SPC WW 271849

ARZ000-LAZ000-OKZ000-TXZ000-280200-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 97

NWS STORM PREDICTION CENTER NORMAN OK

150 PM CDT SUN APR 27 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  MUCH OF CENTRAL AND WESTERN ARKANSAS

  EXTREME NORTHERN LOUISIANA

  EASTERN OKLAHOMA

  NORTHEAST TEXAS



* EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 150 PM UNTIL

  900 PM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL TORNADOES AND A COUPLE INTENSE TORNADOES LIKELY

  WIDESPREAD LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2.5

    INCHES IN DIAMETER LIKELY

  SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 80

    MPH POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 105 STATUTE

MILES EAST AND WEST OF A LINE FROM 15 MILES NORTH OF HARRISON

ARKANSAS TO 60 MILES SOUTH SOUTHEAST OF TEXARKANA ARKANSAS.  FOR

A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU7).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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 94...WW 95...WW 96...



DISCUSSION...COMPLICATED SCENARIO EARLY THIS AFTERNOON...BUT THREAT

FOR SURFACE-BASED STORM DEVELOPMENT WILL INCREASE IN THE NEXT FEW

HOURS LONG THE SURFACE WIND SHIFT IN ERN OK/NE TX...AND NEAR AN

OUTFLOW BOUNDARY ACROSS CENTRAL AR.  THE STORM ENVIRONMENT WILL

BECOME MORE FAVORABLE FOR SUPERCELLS WITH TIME...AND WILL SUPPORT A

STRONG TORNADO RISK BY LATE AFTERNOON INTO THIS EVENING...ESPECIALLY

NEAR THE RESIDUAL OUTFLOW BOUNDARY IN AR.  OTHERWISE...THE MORE

INTENSE SUPERCELLS WILL BE CAPABLE OF PRODUCING VERY LARGE HAIL AND

DAMAGING WINDS.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 24035.





...THOMPSON

