937
WWCN11 CWTO 022243
YELLOW WATCH - SEVERE THUNDERSTORM
FOR SOUTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 6:43 P.M. EDT WEDNESDAY 2 SEPTEMBER 2026.
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YELLOW LEVEL WATCH - SEVERE THUNDERSTORM - FOR:
=NEW= LONDON - MIDDLESEX
WINDSOR - ESSEX - CHATHAM-KENT
SARNIA - LAMBTON
ELGIN.
YELLOW LEVEL WATCH - SEVERE THUNDERSTORM - REPLACES ORANGE LEVEL
WATCH - TORNADO - FOR:
LONDON - MIDDLESEX.
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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:
STRONG WIND GUSTS UP TO 90 KM/H.
NICKEL TO TOONIE SIZE HAIL.
TORRENTIAL DOWNPOURS.
TIMING:
THIS EVENING.
ADDITIONAL INFORMATION:
THUNDERSTORMS MAY PERSIST THROUGH TONIGHT INTO THURSDAY MORNING
WHICH MAY LEAD TO A SIGNIFICANT RAIN THREAT.
LOCAL UTILITY OUTAGES ARE POSSIBLE. DAMAGE TO ROOFS, FENCES,
BRANCHES OR SOFT SHELTERS IS POSSIBLE. THERE IS A RISK OF INJURY. BE
PREPARED FOR SEVERE WEATHER. IF THREATENING WEATHER APPROACHES, TAKE
COVER IN A BASEMENT OR INTERIOR ROOM. IF OUTSIDE, PROTECT YOURSELF
FROM FLYING DEBRIS AND HAIL. WHEN THUNDER ROARS, GO
INDOORS(EXCLAMATION MARK) LIGHTNING KILLS AND INJURES CANADIANS
EVERY YEAR. SECURE LOOSE OBJECTS.
LARGE HAIL CAN CAUSE SIGNIFICANT DAMAGE AND INJURY.
SEVERE THUNDERSTORM WATCHES ARE ISSUED WHEN CONDITIONS ARE
FAVOURABLE FOR THE DEVELOPMENT OF THUNDERSTORMS CAPABLE OF PRODUCING
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 SOCIAL MEDIA USING
(HASH)ONSTORM.
FOR MORE INFORMATION:
HTTPS://WWW.ONTARIO.CA/PAGE/BE-PREPARED-EMERGENCY.
HTTP://WEATHER.GC.CA
END/OSPC
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