832  
WWCN11 CWTO 092352  
SEVERE THUNDERSTORM WATCH  
FOR SOUTHERN ONTARIO  
UPDATED BY ENVIRONMENT CANADA  
AT 7:52 P.M. EDT WEDNESDAY 9 JULY 2025.  
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SEVERE THUNDERSTORM WATCH FOR:  
WINDSOR - ESSEX - CHATHAM-KENT  
SARNIA - LAMBTON.  
 
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==DISCUSSION==  
 
CONDITIONS ARE FAVOURABLE FOR THE DEVELOPMENT OF SEVERE  
THUNDERSTORMS THAT MAY BE CAPABLE OF PRODUCING STRONG WIND GUSTS AND  
HEAVY RAIN.  
 
HAZARDS:  
HEAVY RAINFALL WITH RAINFALL RATES BETWEEN 30 AND 50 MM PER HOUR.  
STRONG WIND GUSTS.  
HAIL 2 CM IN DIAMETER.  
 
WHEN:  
THIS EVENING.  
 
DAMAGE TO ROOFS, FENCES, BRANCHES OR SOFT SHELTERS IS POSSIBLE. WHEN  
THUNDER ROARS, GO INDOORS(EXCLAMATION MARK) LIGHTNING KILLS AND  
INJURES CANADIANS EVERY YEAR. DON'T DRIVE THROUGH FLOODED ROADWAYS.  
 
HEAVY RAIN CAN CAUSE FLASH FLOODING AND SIGNIFICANT REDUCTIONS TO  
VISIBILITY.  
 
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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