WWCN12 CWTO 042310

YELLOW WATCH - SEVERE THUNDERSTORM

FOR NORTHERN ONTARIO

UPDATED BY ENVIRONMENT CANADA

AT 7:10 P.M. EDT THURSDAY 4 JUNE 2026.

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YELLOW LEVEL WATCH - SEVERE THUNDERSTORM - FOR:

      CITY OF THUNDER BAY

      IGNACE - ENGLISH RIVER

      ATIKOKAN - UPSALA - QUETICO

      SUPERIOR WEST

      SAVANT LAKE - STURGEON LAKE

      LAKE NIPIGON - WABAKIMI

      NIPIGON - ROSSPORT.



YELLOW LEVEL WATCH - SEVERE THUNDERSTORM - ENDED FOR:

      DRYDEN - VERMILION BAY

      SEINE RIVER VILLAGE - MINE CENTRE

      SIOUX LOOKOUT - EASTERN LAC SEUL.



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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 AND 

LARGE HAIL.



WHAT: 

WIND GUSTS UP TO 90 KM/H. 

TOONIE SIZED HAIL. 



WHEN: 

THIS EVENING. 



ADDITIONAL INFORMATION: 

THUNDERSTORMS ARE EXPECTED TO CONTINUE INTO THIS EVENING.



LOCAL UTILITY OUTAGES ARE POSSIBLE. 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. 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