762
WWCN11 CWTO 020752
YELLOW WATCH - SEVERE THUNDERSTORM
FOR SOUTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 3:52 A.M. EDT WEDNESDAY 2 SEPTEMBER 2026.
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YELLOW LEVEL WATCH - SEVERE THUNDERSTORM - FOR:
=NEW= NEWMARKET - GEORGINA - NORTHERN YORK REGION
=NEW= UXBRIDGE - BEAVERTON - NORTHERN DURHAM REGION
=NEW= LINDSAY - SOUTHERN KAWARTHA LAKES
=NEW= FENELON FALLS - BALSAM LAKE PARK - NORTHERN KAWARTHA LAKES
DUFFERIN - INNISFIL
GREY - BRUCE
BARRIE - ORILLIA - MIDLAND.
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IMPACT LEVEL: MODERATE
FORECAST CONFIDENCE: HIGH
==DISCUSSION==
CONDITIONS ARE FAVOURABLE FOR THE DEVELOPMENT OF SEVERE
THUNDERSTORMS THAT MAY BE CAPABLE OF PRODUCING STRONG WIND GUSTS,
LARGE HAIL AND HEAVY RAIN.
HAZARDS:
QUARTER TO GOLF BALL SIZE HAIL.
TORRENTIAL DOWNPOURS.
WIND GUSTS UP TO 90 KM/H.
TIMING:
THROUGH THIS MORNING.
ADDITIONAL INFORMATION:
THUNDERSTORMS ARE EXPECTED TO TRACK SOUTHEASTWARD FROM GEORGIAN BAY
THROUGH THIS MORNING.
LOCAL UTILITY OUTAGES ARE POSSIBLE. WHEN THUNDER ROARS, GO
INDOORS(EXCLAMATION MARK) LIGHTNING KILLS AND INJURES CANADIANS
EVERY YEAR.
HEAVY RAIN CAN CAUSE FLASH FLOODING AND SIGNIFICANT REDUCTIONS TO
VISIBILITY.
LARGE HAIL CAN CAUSE SIGNIFICANT DAMAGE AND INJURY.
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
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