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   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 558
   NWS STORM PREDICTION CENTER NORMAN OK
   200 AM CDT MON JUL 5 2004
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          SOUTHERN AND WESTERN IOWA
          NORTHEAST KANSAS
          NORTHERN AND CENTRAL MISSOURI
          EASTERN NEBRASKA
   
   EFFECTIVE THIS MONDAY MORNING FROM 200 AM UNTIL 700 AM CDT.
   
   HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 105 STATUTE MILES
   EITHER SIDE OF A LINE FROM 50 MILES NORTH NORTHWEST OF OMAHA
   NEBRASKA TO 40 MILES EAST NORTHEAST OF KNOB NOSTER MISSOURI.
   
   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 555...SEVERE THUNDERSTORM WATCH
   NUMBER 557. WATCH NUMBER 555 557 WILL NOT BE IN EFFECT AFTER 200
   AM CDT. CONTINUE...WW 556...
   
   DISCUSSION...LINEAR MCS IN ERN KS EXPECTED TO INTENSIFY AND
   MOVE/DEVELOP MAINLY E OR ENE INTO MO/SRN IA DURING THE NEXT SVRL HRS
   AS ASSOCIATED COLD POOL IS REINFORCED BY UPSTREAM OUTFLOW BNDRY NOW
   MOVING INTO SYSTEM FROM THE WEST.  AXIS OF SURFACE-BASED INSTABILITY
   EXTENDING E ACROSS NRN MO SUGGESTS THAT SYSTEM MAY TURN A BIT TO THE
   RIGHT OF MEAN SW FLOW. THREAT WILL EXIST FOR HIGH WIND...AND
   POSSIBLY HAIL.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
   MOTION VECTOR 26035.
   
   
   ...CORFIDI