WUCN11 CWTO 301306

YELLOW WARNING - SEVERE THUNDERSTORM

FOR SOUTHERN ONTARIO

UPDATED BY ENVIRONMENT CANADA

AT 9:06 A.M. EDT TUESDAY 30 JUNE 2026.

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YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:

      WESTERN ALGONQUIN PARK - LAKE OF TWO RIVERS.



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IMPACT LEVEL: MODERATE

FORECAST CONFIDENCE: HIGH



==DISCUSSION==



UPDATED OR ENDED BY 11:05 A.M. EDT.



AT 9:06 A.M. EDT, ENVIRONMENT CANADA METEOROLOGISTS ARE TRACKING A 

SEVERE THUNDERSTORM CAPABLE OF PRODUCING STRONG WIND GUSTS AND UP TO 

QUARTER SIZE HAIL.



THUNDERSTORM LOCATION: NEAR CHISWICK 



MOTION: MOVING SOUTHEAST AT 30 KM/H 



HAZARDS: 

WIND: STRONG (UP TO 90 KM/H) 

HAIL: UP TO QUARTER SIZE (UP TO 2.5 CM) 



LOCATIONS IN THE PATH: 

KIOSK



DAMAGE TO ROOFS, FENCES, SOFT SHELTERS OR TREES IS LIKELY. THERE IS 

A RISK OF INJURY. 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. 



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