839
WWCN12 CWTO 251100
YELLOW WATCH - SEVERE THUNDERSTORM
FOR NORTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 7:00 A.M. EDT TUESDAY 25 AUGUST 2026.
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YELLOW LEVEL WATCH - SEVERE THUNDERSTORM - FOR:
DRYDEN - IGNACE
FORT FRANCES - RAINY LAKE
ATIKOKAN - UPSALA - QUETICO
SAVANT LAKE - STURGEON LAKE.
YELLOW LEVEL WATCH - SEVERE THUNDERSTORM - ENDED FOR:
SIOUX LOOKOUT - EASTERN LAC SEUL.
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IMPACT LEVEL: HIGH
FORECAST CONFIDENCE: MODERATE
==DISCUSSION==
CONDITIONS ARE FAVOURABLE FOR THE DEVELOPMENT OF DANGEROUS
THUNDERSTORMS THAT MAY BE CAPABLE OF PRODUCING STRONG WIND GUSTS,
DAMAGING HAIL AND HEAVY RAIN.
LINES OF THUNDERSTORMS IS SLOWLY MOVING EASTWARD ACROSS NORTHWESTERN
ONTARIO EARLY THIS MORNING. SOME OF THESE THUNDERSTORMS COULD BECOME
SEVERE.
WHAT:
WIND GUSTS UP TO 90 KM/H.
UP TO LOONIE SIZED HAIL.
LOCALLY HEAVY RAIN.
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.
STRONG WIND GUSTS CAN DAMAGE TREES, BUILDINGS AND OVERTURN VEHICLES.
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, 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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