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   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 180
   NWS STORM PREDICTION CENTER NORMAN OK
   535 PM CDT THU APR 21 2005
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHEAST ARKANSAS
          SOUTHERN ILLINOIS
          WESTERN KENTUCKY
          SOUTHEAST MISSOURI
          NORTHWEST TENNESSEE
   
   EFFECTIVE THIS THURSDAY AFTERNOON AND FRIDAY MORNING FROM 535 PM
   UNTIL 100 AM CDT.
   
   HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80
   STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH OF CAPE
   GIRARDEAU MISSOURI TO 30 MILES SOUTHEAST OF WALNUT RIDGE ARKANSAS.
    FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU0).
   
   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 176...WW 177...WW 178...WW
   179...
   
   DISCUSSION...CLUSTERS OF STRONG/SEVERE STORMS ARE DEVELOPING
   EASTWARD INTO SOUTHEAST MO AND NORTHEAST AR.  THESE STORMS WILL
   LIKELY SPREAD EASTWARD ACROSS THE WATCH AREA DURING THE NEXT FEW
   HOURS. LARGE HAIL IS LIKELY TO BE THE MAIN THREAT.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
   MOTION VECTOR 27030.
   
   
   ...HART