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WWUS20 KWNS 211854

SEL5

SPC WW 211854

ARZ000-LAZ000-OKZ000-TXZ000-220300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 205

NWS STORM PREDICTION CENTER NORMAN OK

150 PM CDT TUE MAY 21 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  SOUTHERN ARKANSAS

  NORTHERN LOUISIANA

  SOUTHEAST OKLAHOMA

  NORTHEAST TEXAS



* EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 150 PM UNTIL

  1000 PM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL TORNADOES WITH A FEW INTENSE TORNADOES POSSIBLE

  NUMEROUS DAMAGING WIND GUSTS LIKELY WITH A FEW SIGNIFICANT GUSTS

    TO 80 MPH POSSIBLE

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

    INCHES IN DIAMETER POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 95 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 45 MILES NORTHWEST OF

LONGVIEW TEXAS TO 50 MILES EAST SOUTHEAST OF EL DORADO ARKANSAS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 201...WW 202...WW

203...WW 204...



DISCUSSION...RAPID INTENSIFICATION OF THUNDERSTORM ACTIVITY APPEARS

LIKELY ACROSS NORTH CENTRAL TEXAS DURING THE NEXT COUPLE OF

HOURS...WITH CONVECTION CONSOLIDATING AND GROWING UPSCALE INTO A

SEVERE MESOSCALE CONVECTIVE SYSTEM.  SHORTLY THEREAFTER...DAMAGING

WIND POTENTIAL IS EXPECTED TO INCREASE...WITH AN EASTWARD

ACCELERATION INTO THE ARKLATEX BY EARLY EVENING.

MEANWHILE...DECREASING INHIBITION WITHIN A MOIST BOUNDARY LAYER

AHEAD OF THE DEVELOPING CONVECTIVE SYSTEM MAY ALLOW DISCRETE

SUPERCELLS TO FORM IN THE PRESENCE OF STRONG SHEAR...WHICH WILL ALSO

BE ACCOMPANIED BY THE RISK FOR TORNADOES AND LARGE HAIL.



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

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

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

500. MEAN STORM MOTION VECTOR 27040.





...KERR

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