208  
WUCN11 CWTO 121932  
YELLOW WARNING - SEVERE THUNDERSTORM  
FOR SOUTHERN ONTARIO  
UPDATED BY ENVIRONMENT CANADA  
AT 3:32 P.M. EDT WEDNESDAY 12 AUGUST 2026.  
---------------------------------------------------------------------  
YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:  
CITY OF TORONTO.  
 
YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - ENDED FOR:  
MISSISSAUGA - BRAMPTON.  
 
---------------------------------------------------------------------  
IMPACT LEVEL: MODERATE  
FORECAST CONFIDENCE: HIGH  
 
==DISCUSSION==  
 
UPDATED OR ENDED BY 4:05 P.M. EDT.  
 
AT 3:31 P.M. EDT, A SEVERE THUNDERSTORM IS LOCATED NEAR MIMICO  
BEACH. THIS SEVERE THUNDERSTORM IS MOVING EAST AT 50 KM/H. VERY  
HEAVY RAIN IS POSSIBLE.  
 
LOCATIONS AND NEARBY AREAS THAT COULD BE IMPACTED INCLUDE: MIMICO  
BEACH, MIMICO HARBOUR, SUNNYSIDE BEACH, TORONTO ISLAND, INNER  
HARBOUR, TORONTO HARBOUR, SNUG HARBOUR, CHERRY BEACH, OUTER HARBOUR,  
ASHBRIDGES BAY  
 
SEVERE THUNDERSTORM WARNINGS ARE ISSUED WHEN IMMINENT OR OCCURRING  
THUNDERSTORMS ARE EXPECTED TO PRODUCE DAMAGING HAIL, WIND OR RAIN.  
 
HEAVY RAIN MAY CAUSE FLASH FLOODING AND SIGNIFICANT REDUCTIONS TO  
VISIBILITY. FAST-MOVING AND RAPIDLY RISING WATER CAN SWEEP VEHICLES  
AWAY AND DAMAGE INFRASTRUCTURE.  
 
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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