WUCN11 CWTO 091828

YELLOW WARNING - SEVERE THUNDERSTORM

FOR SOUTHERN ONTARIO

UPDATED BY ENVIRONMENT CANADA

AT 2:28 P.M. EDT THURSDAY 9 JULY 2026.

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YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:

=NEW= BURLINGTON - OAKVILLE

=NEW= MISSISSAUGA - BRAMPTON

      HALTON HILLS - MILTON

      GUELPH - ERIN - SOUTHERN WELLINGTON COUNTY.



YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - ENDED FOR:

      KITCHENER - CAMBRIDGE - REGION OF WATERLOO.



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IMPACT LEVEL: MODERATE

FORECAST CONFIDENCE: HIGH



==DISCUSSION==



UPDATED OR ENDED BY 4:26 P.M. EDT.



AT 2:27 P.M. EDT, ENVIRONMENT CANADA METEOROLOGISTS ARE TRACKING A 

SEVERE THUNDERSTORM CAPABLE OF PRODUCING STRONG WIND GUSTS AND HEAVY 

RAIN.



THUNDERSTORM LOCATION: 

15 KM EAST OF GUELPH TO ARKELL 



MOTION: 

MOVING EAST AT 55 KM/H 



HAZARD: 

WIND: STRONG (UP TO 90 KM/H) 



LOCATIONS IN THE PATH: 

GUELPH 

HALTON HILLS 

MILTON 

OAKVILLE



DAMAGE TO ROOFS, FENCES, SOFT SHELTERS OR TREES IS LIKELY. 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 X USING (HASH)ONSTORM. 



FOR MORE INFORMATION: 

HTTPS://WWW.ONTARIO.CA/PAGE/BE-PREPARED-EMERGENCY.



HTTP://WEATHER.GC.CA



END/OSPC