WUCN12 CWTO 182341

YELLOW WARNING - SEVERE THUNDERSTORM

FOR NORTHERN ONTARIO

UPDATED BY ENVIRONMENT CANADA

AT 7:41 P.M. EDT MONDAY 18 MAY 2026.

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YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:

      NORTH BAY - POWASSAN - MATTAWA.



YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - ENDED FOR:

      WEST NIPISSING - FRENCH RIVER.



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IMPACT LEVEL: MODERATE

FORECAST CONFIDENCE: HIGH



==DISCUSSION==



UPDATED OR ENDED BY 9:39 P.M. EDT.



AT 7:40 P.M. EDT, ENVIRONMENT CANADA METEOROLOGISTS ARE TRACKING A 

LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WIND 

GUSTS AND UP TO QUARTER SIZE HAIL.



LOCAL UTILITY OUTAGES ARE LIKELY. DAMAGE TO ROOFS, FENCES, SOFT 

SHELTERS OR TREES IS LIKELY. 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