SEL3
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 213
   NWS STORM PREDICTION CENTER NORMAN OK
   445 PM CDT MON MAY 17 2004
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          CENTRAL AND SOUTHWEST IOWA
          EXTREME NORTHEAST KANSAS
          NORTHWEST MISSOURI
          SOUTHEAST NEBRASKA
   
   EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 445 PM UNTIL 1000
   PM 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 75 STATUTE MILES
   NORTH AND SOUTH OF A LINE FROM 15 MILES SOUTH OF BEATRICE NEBRASKA
   TO 25 MILES NORTH OF OTTUMWA 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 210...WW 211...WW 212...
   
   DISCUSSION...SCATTERED STRONG/SEVERE STORMS ARE DEVELOPING IN A
   BROAD BAND ALONG AND N OF A SURFACE COLD FRONT FROM SE NEB/NE KS
   INTO CENTRAL IA.  MODERATE INSTABILITY AND VERTICAL SHEAR WILL
   SUPPORT A THREAT OF LARGE HAIL WITH MANY OF THE STORMS...SOME OF
   WHICH COULD DEVELOP SUPERCELL STRUCTURES.  ADDITIONALLY...ISOLATED
   DAMAGING GUSTS WILL BE POSSIBLE WITH STORMS ALONG THE IMMEDIATE
   FRONT THROUGH THE LATE EVENING HOURS.
   
   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 27025.
   
   
   ...THOMPSON