SEL6
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 396
   NWS STORM PREDICTION CENTER NORMAN OK
   700 PM CDT SAT JUN 4 2005
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          CENTRAL AND NORTHERN IOWA
          CENTRAL AND EASTERN NEBRASKA
          EXTREME SOUTHEAST SOUTH DAKOTA
   
   EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 700 PM UNTIL
   200 AM CDT.
   
   TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
   TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE MILES
   NORTH AND SOUTH OF A LINE FROM 10 MILES NORTH NORTHWEST OF NORTH
   PLATTE NEBRASKA TO 15 MILES SOUTHEAST OF WATERLOO IOWA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
   UPDATE (WOUS64 KWNS WOU6).
   
   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.
   
   OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO
   WATCH NUMBER 390. WATCH NUMBER 390 WILL NOT BE IN EFFECT AFTER 700
   PM CDT. CONTINUE...WW 391...WW 392...WW 393...WW 394...WW 395...
   
   DISCUSSION...THUNDERSTORMS EXPECTED TO INCREASE IN
   COVERAGE/INTENSITY THROUGH TONIGHT AS WRN NEB UPR VORT CONTINUES
   ENEWD. STRENGTHENING WARM ADVECTION AND GRADUALLY INCREASING LARGE
   SCALE ASCENT SHOULD SUPPORT A FEW SUPERCELLS WITH LARGE HAIL/HIGH
   WIND AND POSSIBLE TORNADOES.  IN THE NEAR TERM...TORNADIC THREAT
   EXPECTED TO DIMINISH AFTER NIGHTFALL IN IMMEDIATE VICINITY OF VORT
   AND ASSOCIATED SURFACE BOUNDARY OVER N CNTRL NEB.
   
   AVIATION...TORNADOES AND 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 23025.
   
   
   ...CORFIDI