April 26: Severe Thunderstorm Watch #3

URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 218
   NWS STORM PREDICTION CENTER NORMAN OK
   345 PM CDT TUE APR 26 2011
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          SOUTHERN OKLAHOMA
          WESTERN NORTH TEXAS
   
   EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 345 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 55
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES WEST OF
   ALTUS OKLAHOMA TO 20 MILES NORTH NORTHEAST OF DURANT OKLAHOMA. 
   FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU8).
   
   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 213...WW 214...WW
   215...WW 216...WW 217...
   
   DISCUSSION...SCATTERED THUNDERSTORMS HAVE DEVELOPED IN THE LEFT-EXIT
   REGION OF A STRONG MID/UPPER LEVEL JET OVER THE TX PANHANDLE.  THESE
   STORMS ARE LIKELY TO TRACK EASTWARD ACROSS SOUTHERN OK AND WESTERN
   NORTH TX THROUGH THE LATE AFTERNOON AND EVENING.  VERTICAL SHEAR
   PROFILES SUPPORT ROTATING STORMS CAPABLE OF HAIL AND DAMAGING WINDS.
   
   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 450. MEAN STORM
   MOTION VECTOR 27035.