WUCN11 CWTO 222303
YELLOW WARNING - SEVERE THUNDERSTORM
FOR SOUTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 7:03 P.M. EDT SATURDAY 22 AUGUST 2026.
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YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:
      CITY OF TORONTO
      MISSISSAUGA - BRAMPTON.

YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - ENDED FOR:
      BURLINGTON - OAKVILLE
      HALTON HILLS - MILTON.

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IMPACT LEVEL: MODERATE
FORECAST CONFIDENCE: HIGH

==DISCUSSION==

UPDATED OR ENDED BY 8:02 P.M. EDT.

AT�7:03 P.M. EDT,�A SEVERE THUNDERSTORM�IS LOCATED�OVER MIMICO 
BEACH.�THIS SEVERE THUNDERSTORM IS MOVING EAST AT 50 KM/H.�HEAVY 
RAIN IS POSSIBLE. 

LOCATIONS AND NEARBY AREAS THAT COULD BE IMPACTED INCLUDE: MIMICO 
BEACH, MIMICO HARBOUR

RADAR AND PERSONAL WEATHER STATION DATA SUGGEST 25 TO 40 MM OF RAIN 
HAS ALREADY FALLEN. ADDITIONAL RAINFALL AMOUNTS IN EXCESS OF 25 MM 
ARE POSSIBLE.

HEAVY RAIN MAY CAUSE FLASH FLOODING AND SIGNIFICANT REDUCTIONS TO 
VISIBILITY. DON'T DRIVE THROUGH FLOODED ROADWAYS. 

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