SEL9
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 169
   NWS STORM PREDICTION CENTER NORMAN OK
   825 PM CDT SAT MAY 8 2004
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          CENTRAL AND SOUTHERN IOWA
          NORTHERN KANSAS
          NORTHWEST MISSOURI
          SOUTHEAST NEBRASKA
   
   EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 825 PM UNTIL
   200 AM CDT.
   
   HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 65
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 80 STATUTE MILES
   NORTH AND SOUTH OF A LINE FROM 75 MILES SOUTH SOUTHWEST OF KEARNEY
   NEBRASKA TO 50 MILES NORTHEAST OF CEDAR RAPIDS 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...THIS SEVERE THUNDERSTORM WATCH REPLACES
   SEVERE THUNDERSTORM WATCH NUMBER 163...SEVERE THUNDERSTORM WATCH
   NUMBER 164. WATCH NUMBER 163 164 WILL NOT BE IN EFFECT AFTER 825
   PM CDT. CONTINUE...WW 165...WW 166...WW 167...WW 168...
   
   DISCUSSION...ON-GOING THUNDERSTORMS EXPECTED TO CONTINUE EVOLVING
   INTO A LINEAR MCS...WITH A THREAT FOR HAIL/LOCALLY DAMAGING WIND. 
   PROPAGATION  COMPONENT SHOULD TAKE NEB ACTIVITY MAINLY SEWD...AND
   WRN/CNTRL IA STORMS MAINLY SWD.  DECOUPLING OF LOW LEVEL JET MAY
   ALSO SUPPORT ADDITIONAL ELEVATED STORMS ATOP CONVECTIVE OUTFLOW IN N
   CNTRL AND ERN IA...WITH A THREAT FOR HAIL.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 55
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
   MOTION VECTOR 30020.
   
   
   ...CORFIDI