WUCN12 CWTO 130516

YELLOW WARNING - SEVERE THUNDERSTORM

FOR NORTHERN ONTARIO

UPDATED BY ENVIRONMENT CANADA

AT 1:16 A.M. EDT MONDAY 13 JULY 2026.

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YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:

      MARATHON - SCHREIBER.



YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - ENDED FOR:

      BEARDMORE - JELLICOE - MACDIARMID

      GERALDTON - LONGLAC - CARAMAT.



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IMPACT LEVEL: MODERATE

FORECAST CONFIDENCE: HIGH



==DISCUSSION==



UPDATED OR ENDED BY 3:15 A.M. EDT.



AT 1:16 A.M. EDT, ENVIRONMENT CANADA METEOROLOGISTS ARE TRACKING A 

SEVERE THUNDERSTORM CAPABLE OF PRODUCING STRONG WIND GUSTS, UP TO 

QUARTER SIZE HAIL AND HEAVY RAIN.



THUNDERSTORM LOCATION: NEAR JIMS HARBOUR 



MOTION: MOVING SOUTHEAST AT 60 KM/H 



HAZARDS: 

WIND: STRONG (UP TO 90 KM/H) 

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

RAIN: HEAVY (15 - 50 MM) 



LOCATIONS IN THE PATH: 

JIMS HARBOUR 

MCKELLAR HARBOUR 

NEYS PROVINCIAL PARK 

JOHNSON HARBOUR 

MARATHON 

HAPPY HARBOUR 

PULPWOOD HARBOUR 

PLAYTER HARBOUR 

PICTURE ROCK HARBOUR 

MORRISON HARBOUR



HEAVY RAIN MAY CAUSE FLASH FLOODING AND SIGNIFICANT REDUCTIONS TO 

VISIBILITY. LARGE HAIL MAY CAUSE SIGNIFICANT DAMAGE AND INJURY. TAKE 

IMMEDIATE COVER IF A THUNDERSTORM APPROACHES. IF OUTSIDE, PROTECT 

YOURSELF FROM FLYING DEBRIS AND HAIL. 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



END/OSPC