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Severe Thunderstorm Watch 702
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WW0702 Radar
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   SEL2
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 702
   NWS STORM PREDICTION CENTER NORMAN OK
   650 AM CDT THU AUG 10 2006
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHERN AND CENTRAL ILLINOIS
          WESTERN AND CENTRAL INDIANA
   
   EFFECTIVE THIS THURSDAY MORNING AND AFTERNOON FROM 650 AM UNTIL
   100 PM CDT.
   
   HAIL TO 2.5 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 60
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 65 MILES NORTH
   NORTHWEST OF PEORIA ILLINOIS TO 35 MILES NORTH NORTHEAST OF
   INDIANAPOLIS INDIANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE
   THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).
   
   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 700...WW 701...
   
   DISCUSSION...LINEAR MCS NOW MOVING ACROSS THE MS RIVER VALLEY INTO
   NWRN IL IS EXPECTED TO CONTINUE ESEWD AND POSSIBLY ACCELERATE AS
   MORNING HEATING DESTABILIZES AIR MASS ALONG STALLED SURFACE FRONT. 
   SHEAR IS QUITE STRONG AND AN ALREADY MODERATELY UNSTABLE AIR MASS
   WILL FURTHER DESTABILIZE INTO THE EARLY AFTERNOON.  DAMAGING WINDS
   COULD BECOME QUITE STRONG/WIDESPREAD IF ACTIVITY DEVELOPS INTO A
   LARGER BOW ECHO SYSTEM.  ELEVATED SUPERCELLS MAY ALSO CONTINUE AHEAD
   OF THIS MCS ALONG AND NORTH OF QUASI-STATIONARY SURFACE FRONT GIVEN
   DEGREE OF SHEAR WITH ADDITIONAL HAZARD OF LARGE HAIL.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
   MOTION VECTOR 29040.
   
   
   ...EVANS
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