WUCN11 CWTO 181615

YELLOW WARNING - SEVERE THUNDERSTORM

FOR SOUTHERN ONTARIO

UPDATED BY ENVIRONMENT CANADA

AT 12:15 P.M. EDT SATURDAY 18 JULY 2026.

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YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:

      HALTON HILLS - MILTON

      MISSISSAUGA - BRAMPTON.



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IMPACT LEVEL: MODERATE

FORECAST CONFIDENCE: HIGH



==DISCUSSION==



UPDATED OR ENDED BY 2:13 P.M. EDT.



AT 12:14 P.M. EDT, ENVIRONMENT CANADA METEOROLOGISTS ARE TRACKING A 

SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WIND GUSTS AND 

HEAVY RAIN.



THUNDERSTORM LOCATION: OVER MILTON 



MOTION: MOVING EAST AT 40 KM/H 



HAZARDS: 

WIND: STRONG (UP TO 90 KM/H) 

RAIN: HEAVY (15 - 30 MM) 

RISK OF A TORNADO. 



LOCATIONS IN THE PATH: 

MILTON, BRAMPTON, MISSISSAUGA



LOCAL UTILITY OUTAGES ARE LIKELY. HEAVY RAIN MAY CAUSE FLASH 

FLOODING AND SIGNIFICANT REDUCTIONS TO VISIBILITY. THERE IS A RISK 

OF INJURY. TAKE IMMEDIATE COVER IF A THUNDERSTORM APPROACHES. IF 

OUTSIDE, PROTECT YOURSELF FROM FLYING DEBRIS. SEVERE THUNDERSTORMS 

CAN PRODUCE TORNADOES. SEVERE THUNDERSTORM WARNINGS ARE ISSUED WHEN 

IMMINENT OR OCCURRING THUNDERSTORMS ARE EXPECTED TO PRODUCE 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