347  
WWCN11 CWTO 100131  
SEVERE THUNDERSTORM WATCH  
FOR SOUTHERN ONTARIO  
UPDATED BY ENVIRONMENT CANADA  
AT 9:31 P.M. EDT WEDNESDAY 9 JULY 2025.  
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SEVERE THUNDERSTORM WATCH FOR:  
CHATHAM-KENT - RONDEAU PARK.  
 
SEVERE THUNDERSTORM WATCH ENDED FOR:  
WINDSOR - LEAMINGTON - ESSEX COUNTY  
SARNIA - LAMBTON.  
 
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==DISCUSSION==  
 
CONDITIONS ARE FAVOURABLE FOR THE DEVELOPMENT OF SEVERE  
THUNDERSTORMS THAT MAY BE CAPABLE OF PRODUCING HEAVY RAIN.  
 
HAZARDS:  
HEAVY RAINFALL WITH RAINFALL RATES BETWEEN 30 AND 50 MM PER HOUR.  
HAIL 2 CM IN DIAMETER.  
 
WHEN:  
THIS EVENING.  
 
WHEN THUNDER ROARS, GO INDOORS(EXCLAMATION MARK) LIGHTNING KILLS AND  
INJURES CANADIANS EVERY YEAR.  
 
SEVERE THUNDERSTORM WATCHES ARE ISSUED WHEN CONDITIONS ARE  
FAVOURABLE FOR THE DEVELOPMENT OF THUNDERSTORMS CAPABLE OF PRODUCING  
DAMAGING HAIL, WIND OR RAIN.  
 
EMERGENCY MANAGEMENT ONTARIO RECOMMENDS THAT YOU TAKE COVER  
IMMEDIATELY IF THREATENING WEATHER APPROACHES.  
 
PLEASE CONTINUE TO MONITOR ALERTS AND FORECASTS ISSUED BY  
ENVIRONMENT CANADA.  
 
TO REPORT SEVERE WEATHER IN ONTARIO, SEND AN EMAIL TO  
ONSTORM(AT)EC.GC.CA OR POST REPORTS ON X USING (HASH)ONSTORM.  
 
FOR MORE INFORMATION:  
HTTPS://WWW.ONTARIO.CA/PAGE/BE-PREPARED-EMERGENCY.  
 
HTTP://WEATHER.GC.CA  
 
END/OSPC  
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