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865 

WWUS20 KWNS 301824

SEL3

SPC WW 301824

ARZ000-MOZ000-OKZ000-310200-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 253

NWS STORM PREDICTION CENTER NORMAN OK

125 PM CDT THU MAY 30 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  WESTERN AND CENTRAL ARKANSAS

  SOUTHERN AND CENTRAL MISSOURI

  EASTERN OKLAHOMA



* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 125 PM UNTIL

  900 PM 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 80 STATUTE

MILES EAST AND WEST OF A LINE FROM 15 MILES WEST SOUTHWEST OF HOT

SPRINGS ARKANSAS TO 75 MILES NORTHWEST OF FORT LEONARD WOOD

MISSOURI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).



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 250...WW 251...WW 252...



DISCUSSION...COMPLEX STORM EVOLUTION IS ONGOING ALONG MULTIPLE

BOUNDARIES WITHIN A VERY MOIST AND MODERATELY UNSTABLE AIR MASS WITH

MLCAPE OF 1500-3000 J/KG.  THE COLOCATION OF A 40-45 KT LLJ AND THE

SRN FRINGE OF STRONGER MIDLEVEL FLOW ATTENDING THE NEGATIVELY TILTED

MIDLEVEL TROUGH IS RESULTING IN SUFFICIENT SHEAR FOR SUPERCELLS AND

BOWING LINE SEGMENTS WITH A RISK FOR DAMAGING WINDS AND A FEW

TORNADOES.



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

500. MEAN STORM MOTION VECTOR 25025.





...MEAD

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