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Severe Thunderstorm Watch 317
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WW0317 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
High Low
Severe Hail 2"+ Hail
High Moderate

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL7
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 317
   NWS STORM PREDICTION CENTER NORMAN OK
   355 PM CDT TUE MAY 29 2012
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          FAR SOUTHWEST AND SOUTH CENTRAL KANSAS
          WESTERN AND CENTRAL OKLAHOMA
          A SMALL PART OF NORTHWEST TEXAS
   
   EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 355 PM UNTIL
   1100 PM CDT.
   
   HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 85
   STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES NORTHWEST OF
   MEDICINE LODGE KANSAS TO 30 MILES WEST SOUTHWEST OF ARDMORE
   OKLAHOMA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).
   
   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 313...WW 314...WW
   315...WW 316...
   
   DISCUSSION...VISIBLE IMAGERY SHOWS CU/TCU FIELD DEVELOPING FROM SWRN
   KS INTO NWRN OK...AND WITH CAP CONTINUING TO WEAKEN...DEEP
   CONVECTION IS EXPECTED TO DEVELOP WITHIN THE NEXT 1-2 HRS ACROSS
   PARTS OF SWRN KS AND WRN OK.  STEEP LAPSE RATES AND WARM SURFACE
   TEMPERATURES WITH INCREASING MOISTURE OVER OK ARE CONTRIBUTING TO
   VERY UNSTABLE CONDITIONS WITH MLCAPE OF 2500-3500 J/KG.  VEERING
   WINDS WITH HEIGHT AND RESULTANT STRONG DIRECTIONAL SHEAR WILL
   PROVIDE A FAVORABLE ENVIRONMENT FOR INITIAL SUPERCELL DEVELOPMENT
   WITH STORMS CAPABLE OF PRODUCING VERY LARGE HAIL AND DAMAGING WINDS.
    STORMS MAY GROW UPSCALE INTO A SEWD MOVING MCS LATER THIS EVENING
   WITH AN INCREASING THREAT FOR MORE WIDESPREAD DAMAGING WINDS.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
   MOTION VECTOR 29025.
   
   
   ...WEISS
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