SEL6
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 276
   NWS STORM PREDICTION CENTER NORMAN OK
   235 PM CDT MON MAY 24 2004
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          CENTRAL IOWA
   
   EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 235 PM UNTIL 1000
   PM CDT.
   
   TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
   TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE TORNADO WATCH AREA IS ALONG AND 45 STATUTE MILES EAST AND WEST
   OF A LINE FROM 40 MILES NORTHWEST OF MASON CITY IOWA TO 40 MILES
   SOUTH SOUTHWEST OF OTTUMWA IOWA.
   
   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...CONTINUE...WW 271...WW 272...WW 273...WW
   274...WW 275...
   
   DISCUSSION...CLUSTER OF INTENSE CONVECTION OVER NORTHWEST IA WILL
   CONTINUE TO TRACK EASTWARD THROUGH THE AFTERNOON...WITH THE
   POTENTIAL FOR LARGE HAIL.  OTHER MORE ISOLATED STORMS ARE EXPECTED
   TO DEVELOP OVER WESTERN IA IN THE NEXT FEW HOURS...WITH THE
   POTENTIAL FOR TORNADIC SUPERCELLS.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
   GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
   MEAN STORM MOTION VECTOR 26035.
   
   
   ...HART