657  
WUCN11 CWTO 022136  
YELLOW WARNING - SEVERE THUNDERSTORM  
FOR SOUTHERN ONTARIO  
UPDATED BY ENVIRONMENT CANADA  
AT 5:36 P.M. EDT WEDNESDAY 2 SEPTEMBER 2026.  
---------------------------------------------------------------------  
YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:  
PETAWAWA - PEMBROKE - COBDEN.  
 
YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - ENDED FOR:  
DEEP RIVER - WHITNEY - EASTERN ALGONQUIN PARK.  
 
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IMPACT LEVEL: MODERATE  
FORECAST CONFIDENCE: HIGH  
 
==DISCUSSION==  
 
UPDATED OR ENDED BY 6:34 P.M. EDT.  
 
AT 5:35 P.M. EDT, A LINE OF SEVERE THUNDERSTORMS IS LOCATED FROM  
BARRON RIVER PROVINCIAL PARK TO FORT WILLIAM THEN TO JIM LAKE. THESE  
SEVERE THUNDERSTORMS ARE MOVING EAST AT 45 KM/H. STRONG WIND GUSTS,  
UP TO QUARTER SIZE HAIL AND HEAVY RAIN ARE POSSIBLE.  
 
LOCATIONS AND NEARBY AREAS THAT COULD BE IMPACTED INCLUDE: PETAWAWA,  
CHICHESTER, CHAPEAU, PEMBROKE, WALTHAM, FORT-COULONGE  
 
TAKE IMMEDIATE COVER IF A THUNDERSTORM APPROACHES. IF OUTSIDE,  
PROTECT YOURSELF FROM FLYING DEBRIS AND HAIL.  
 
SEVERE THUNDERSTORM WARNINGS ARE ISSUED WHEN IMMINENT OR OCCURRING  
THUNDERSTORMS ARE EXPECTED TO PRODUCE DAMAGING HAIL, WIND OR RAIN.  
 
DRIVING CONDITIONS WILL LIKELY BE DIFFICULT. HEAVY RAIN MAY CAUSE  
FLASH FLOODING AND SIGNIFICANT REDUCTIONS TO VISIBILITY.  
 
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 SOCIAL MEDIA USING  
(HASH)ONSTORM.  
 
FOR MORE INFORMATION:  
HTTPS://WWW.ONTARIO.CA/PAGE/BE-PREPARED-EMERGENCY.  
 
HTTP://WEATHER.GC.CA  
 
END/OSPC  
 
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