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588 

WWUS20 KWNS 291726

SEL9

SPC WW 291726

KSZ000-OKZ000-TXZ000-300300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 239

NWS STORM PREDICTION CENTER NORMAN OK

1225 PM CDT WED MAY 29 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  WESTERN AND CENTRAL KANSAS

  WESTERN OKLAHOMA INCLUDING THE CENTRAL AND EASTERN PANHANDLE

  NORTHWEST TEXAS INCLUDING THE EASTERN PANHANDLE



* EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 1225 PM

  UNTIL 1000 PM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL INTENSE TORNADOES POSSIBLE

  SEVERAL VERY LARGE HAIL EVENTS TO 2.5 INCHES IN DIAMETER LIKELY

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE

MILES EAST AND WEST OF A LINE FROM 60 MILES WEST NORTHWEST OF

RUSSELL KANSAS TO 45 MILES SOUTH SOUTHEAST OF CHILDRESS TEXAS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU9).



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.



&&



DISCUSSION...TSTM INITIATION IS UNDERWAY E OF THE DRYLINE IN

RESPONSE TO THE EWD MIGRATION OF A SHORT-WAVE TROUGH INTO THE SRN

PLAINS.  THE PRESENCE OF VERY STEEP MIDLEVEL LAPSE RATES AND A MOIST

BOUNDARY LAYER IS ALREADY RESULTING IN MLCAPE VALUES OF 2000-3000

J/KG WITH A DECREASING CAP.  DESPITE SOME VEER-BACK TENDENCIES IN

OBSERVED AND FORECAST WIND PROFILES...LOW-LEVEL SHEAR WILL

STRENGTHEN INTO THIS EVENING SUPPORTING A RISK FOR TORNADOES /SOME

POTENTIALLY SIGNIFICANT/ IN ADDITION TO VERY LARGE HAIL WITH THE

MOST INTENSE SUPERCELLS THAT DEVELOP.



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

SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 24025.





...MEAD

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