WWCN12 CWTO 102328

YELLOW WATCH - SEVERE THUNDERSTORM

FOR NORTHERN ONTARIO

UPDATED BY ENVIRONMENT CANADA

AT 7:28 P.M. EDT WEDNESDAY 10 JUNE 2026.

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YELLOW LEVEL WATCH - SEVERE THUNDERSTORM - FOR:

      ATIKOKAN - UPSALA - QUETICO

      KAKABEKA FALLS - WHITEFISH LAKE - ARROW LAKE.



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IMPACT LEVEL: MODERATE

FORECAST CONFIDENCE: HIGH



==DISCUSSION==



CONDITIONS ARE FAVOURABLE FOR THE DEVELOPMENT OF DANGEROUS 

THUNDERSTORMS THAT MAY BE CAPABLE OF PRODUCING DAMAGING WIND GUSTS, 

LARGE HAIL AND TORRENTIAL RAIN.



WHAT: 

WIND GUSTS UP TO 90 KM/H. 

HAIL UP TO QUARTER SIZED HAIL. 

HEAVY RAIN WITH LOCAL AMOUNTS UP TO 60 MM. 



WHEN: 

THIS EVENING. 



ADDITIONAL INFORMATION: 

THUNDERSTORMS ARE EXPECTED TO MOVE INTO THE AREA LATER THIS EVENING.



LOCAL UTILITY OUTAGES ARE POSSIBLE. WHEN THUNDER ROARS, GO 

INDOORS(EXCLAMATION MARK) LIGHTNING KILLS AND INJURES CANADIANS 

EVERY YEAR. DON'T DRIVE THROUGH FLOODED ROADWAYS. HEAVY RAIN CAN 

CAUSE FLASH FLOODING AND SIGNIFICANT REDUCTIONS TO VISIBILITY. 

STRONG WIND GUSTS CAN DAMAGE TREES, BUILDINGS AND OVERTURN VEHICLES. 

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 X USING (HASH)ONSTORM. 



FOR MORE INFORMATION: 

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



HTTP://WEATHER.GC.CA



END/OSPC