SEL6
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 76
   NWS STORM PREDICTION CENTER NORMAN OK
   945 PM CDT FRI APR 16 2004
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          CENTRAL AND EASTERN IOWA
   
   EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 945 PM UNTIL
   200 AM CDT.
   
   HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 50 STATUTE MILES
   EAST AND WEST OF A LINE FROM 55 MILES SOUTH SOUTHWEST OF CEDAR
   RAPIDS IOWA TO 25 MILES EAST NORTHEAST OF WATERLOO IOWA.
   
   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 75...
   
   DISCUSSION...CLUSTER OF INTENSE CONVECTION CONTINUES OVER CENTRAL
   IA.  THESE STORMS ARE LIKELY TO REMAIN CAPABLE OF DAMAGING WINDS AND
   HAIL FOR ANOTHER FEW HOURS AS THEY SPREAD EASTWARD.  INCREASING
   SOUTHERLY LOW LEVEL WINDS AND APPROACHING SHORTWAVE TROUGH WILL
   ENHANCE SEVERE THREAT.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
   MOTION VECTOR 27030.
   
   
   ...HART