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Severe Thunderstorm Watch 459
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WW0459 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
High Moderate
Severe Hail 2"+ Hail
Moderate Low

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL9
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 459
   NWS STORM PREDICTION CENTER NORMAN OK
   730 AM EDT THU JUN 18 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          SOUTHEAST ILLINOIS
          CENTRAL AND SOUTHERN INDIANA
          CENTRAL KENTUCKY
   
   EFFECTIVE THIS THURSDAY MORNING AND AFTERNOON FROM 730 AM UNTIL
   100 PM EDT.
   
   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 APPROXIMATELY ALONG AND 70
   STATUTE MILES EITHER SIDE OF A LINE FROM 25 MILES SOUTHEAST OF
   LOUISVILLE KENTUCKY TO 50 MILES WEST SOUTHWEST OF TERRE HAUTE
   INDIANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).
   
   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 457...WW 458...
   
   DISCUSSION...MATURE BOW ECHO TRACKING ACROSS CENTRAL IL IS LIKELY TO
   PERSIST THROUGH THE MORNING HOURS AND TRACK INTO SOUTHERN IND AND
   CENTRAL KY.  STORMS ARE MOVING ALONG A STRONG INSTABILITY GRADIENT
   AND SHOW CONSIDERABLE MESOSCALE ORGANIZATION.  THIS IS EXPECTED TO
   MAINTAIN RISK OF DAMAGING WINDS ACROSS THE WATCH AREA.
   
   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 500. MEAN STORM
   MOTION VECTOR 31040.
   
   
   ...HART
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