WUCN12 CWTO 300125

YELLOW WARNING - SEVERE THUNDERSTORM

FOR NORTHERN ONTARIO

UPDATED BY ENVIRONMENT CANADA

AT 9:25 P.M. EDT MONDAY 29 JUNE 2026.

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YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:

=NEW= SIOUX NARROWS - NESTOR FALLS - MORSON

      FORT FRANCES - RAINY LAKE.



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IMPACT LEVEL: MODERATE

FORECAST CONFIDENCE: HIGH



==DISCUSSION==



UPDATED OR ENDED BY 10:23 P.M. CDT (10:23 P.M. EST).



AT 8:24 P.M. CDT (8:24 P.M. EST), ENVIRONMENT CANADA METEOROLOGISTS 

ARE TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING 

WIND GUSTS, LOONIE TO PING PONG BALL SIZE HAIL AND HEAVY RAIN.



THUNDERSTORM LOCATION: 

CALIPER LAKE PROVINCIAL PARK TO 25 KM (26 KM) SOUTHEAST OF SEINE 

RIVER VILLAGE. 



MOTION: MOVING NORTHEAST AT 55 KM/H. 



HAZARDS: 

WIND: DAMAGING (90 - 110 KM/H) 

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

RAIN: HEAVY (15 - 50 MM) 



LOCATIONS IN THE PATH: 

CALIPER LAKE PROVINCIAL PARK 

SPHENE LAKE 

SEINE RIVER VILLAGE 

OTUKAMAMOAN LAKE 

HERON LAKE 

DOVETAIL LAKE



DAMAGE TO ROOFS, FENCES, SOFT SHELTERS OR TREES IS LIKELY. 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