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Severe Thunderstorm Watch 490
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WW0490 Radar
Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
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   SEL0
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 490
   NWS STORM PREDICTION CENTER NORMAN OK
   240 PM CDT SUN JUN 8 2008
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          SOUTH CENTRAL KANSAS
          WESTERN OKLAHOMA
          EASTERN TEXAS PANHANDLE
   
   EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 240 PM UNTIL
   1000 PM CDT.
   
   HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65
   STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES NORTHEAST OF
   WICHITA KANSAS TO 40 MILES SOUTHEAST OF AMARILLO TEXAS.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
   UPDATE (WOUS64 KWNS WOU0).
   
   REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
   FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
   DO PRODUCE TORNADOES.
   
   OTHER WATCH INFORMATION...CONTINUE...WW 485...WW 486...WW
   487...WW 488...WW 489...
   
   DISCUSSION...SCATTERED STRONG/SEVERE THUNDERSTORMS ARE EXPECTED TO
   FORM ALONG WEAKENING SURFACE FRONT EXTENDING FROM JUST WEST OF ICT
   TO NEAR AMA.  STRONG INSTABILITY...RELATIVELY STEEP LAPSE
   RATES...AND FAVORABLE DEEP LAYER VERTICAL SHEAR WILL PROMOTE
   GUSTY/DAMAGING WINDS AND HAIL IN STRONGER CELLS THROUGH THE EVENING.
    SOME THREAT ALSO EXISTS FOR THE BOUNDARY TO RETREAT LATER THIS
   EVENING...WITH STORMS FORMING TO THE WEST OF INITIAL CONVECTION.
   
   AVIATION...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 24030.
   
   
   ...HART
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