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297 

WWUS20 KWNS 040155

SEL6

SPC WW 040155

ARZ000-LAZ000-OKZ000-TXZ000-040900-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 56

NWS STORM PREDICTION CENTER NORMAN OK

855 PM CDT THU APR 3 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  SOUTHWEST ARKANSAS

  NORTHWEST LOUISIANA

  EXTREME SOUTHEAST OKLAHOMA

  NORTHEAST TEXAS



* EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 855 PM

  UNTIL 400 AM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL TORNADOES POSSIBLE

  SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 2

    INCHES IN DIAMETER POSSIBLE

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 120 STATUTE

MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH OF TEXARKANA

ARKANSAS TO 35 MILES SOUTH SOUTHWEST OF LONGVIEW TEXAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU6).



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...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 52. WATCH NUMBER 52 WILL NOT BE IN EFFECT AFTER 855

PM CDT. CONTINUE...WW 53...WW 54...WW 55...



DISCUSSION...SUPERCELL CLUSTER NE OF DALLAS WILL CONTINUE TO MOVE

EWD ACROSS NE TX...WHILE NEW STORM DEVELOPMENT COULD OCCUR IN THE

NEXT FEW HOURS NEAR AND E OF THE NE TX/NW LA BORDER.  AN INFLUX OF

UPPER 60S DEWPOINTS WILL MAINTAIN MODERATE INSTABILITY INTO THE

OVERNIGHT HOURS...WHILE VERTICAL SHEAR WILL REMAIN SUFFICIENT FOR

ORGANIZED/SUPERCELL STORMS WITH THE RISK FOR A COUPLE OF TORNADOES.

LARGE HAIL AND DAMAGING WINDS CAN ALSO BE EXPECTED WITH THE

STRONGEST STORMS.



AVIATION...TORNADOES AND 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 25035.





...THOMPSON

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