WUCN12 CWTO 181213

YELLOW WARNING - SEVERE THUNDERSTORM

FOR NORTHERN ONTARIO

UPDATED BY ENVIRONMENT CANADA

AT 8:13 A.M. EDT MONDAY 18 MAY 2026.

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YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:

      CHAPLEAU - MISSINAIBI LAKE.



YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - ENDED FOR:

      AGAWA - LAKE SUPERIOR PARK.



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IMPACT LEVEL: MODERATE

FORECAST CONFIDENCE: HIGH



==DISCUSSION==



UPDATED OR ENDED BY 10:11 A.M. EDT.



AT 8:12 A.M. EDT, ENVIRONMENT CANADA METEOROLOGISTS ARE TRACKING A 

SEVERE THUNDERSTORM CAPABLE OF PRODUCING UP TO QUARTER SIZE HAIL.



THUNDERSTORM LOCATION: 

GOLDIE LAKE TO 35 KM SOUTH OF THE SHOALS PROVINCIAL PARK 



MOTION: 

MOVING EAST AT 50 KM/H 



HAZARDS: 

HAIL: UP TO QUARTER SIZE (UP TO 2.5 CM) 



LOCATIONS IN THE PATH: 

THE SHOALS PROVINCIAL PARK 

GOLDIE LAKE 

CHAPLEAU 

LIPSETT LAKE 

FIVE MILE LAKE PROVINCIAL PARK 

NEMEGOSENDA LAKE



LARGE HAIL MAY CAUSE SIGNIFICANT DAMAGE AND INJURY. SEVERE 

THUNDERSTORM WARNINGS ARE ISSUED WHEN IMMINENT OR OCCURRING 

THUNDERSTORMS ARE EXPECTED TO PRODUCE 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



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