SEL3
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 283
   NWS STORM PREDICTION CENTER NORMAN OK
   150 PM CDT TUE MAY 17 2005
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          CENTRAL AND WESTERN NEBRASKA
          CENTRAL AND WESTERN SOUTH DAKOTA
   
   EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 150 PM UNTIL
   1000 PM CDT.
   
   HAIL TO 2 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 70 MILES NORTHEAST OF
   REDIG SOUTH DAKOTA TO 15 MILES EAST SOUTHEAST OF NORTH PLATTE
   NEBRASKA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).
   
   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.
   
   DISCUSSION...SCATTERED STRONG/SEVERE THUNDERSTORMS ARE EXPECTED TO
   DEVELOP ALONG SURFACE COLD FRONT/DRYLINE OVER WESTERN SD/NEB IN THE
   NEXT COUPLE OF HOURS.  THESE STORMS WILL LIKELY SURGE EASTWARD
   ACROSS WATCH AREA DURING THE LATE AFTERNOON AND EVENING.  DAMAGING
   WINDS AND LARGE HAIL APPEAR POSSIBLE.
   
   AVIATION...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 26035.
   
   
   ...HART