622
WUCN12 CWTO 050221
SEVERE THUNDERSTORM WARNING
FOR NORTHERN ONTARIO
ISSUED BY ENVIRONMENT CANADA
AT 10:21 P.M. EDT SATURDAY 4 OCTOBER 2025.
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SEVERE THUNDERSTORM WARNING FOR:
=NEW= SIOUX NARROWS - NESTOR FALLS - MORSON.
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==DISCUSSION==
UPDATED OR ENDED BY 11:20 P.M. CDT.
AT 9:21 P.M. CDT, ENVIRONMENT CANADA METEOROLOGISTS ARE TRACKING A
CLUSTER OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING UP TO NICKEL
SIZE HAIL AND HEAVY RAIN.
THIS CLUSTER OF SEVERE THUNDERSTORMS IS LOCATED FROM 70 KILOMETRES
SOUTH OF GRETNA TO 8 KILOMETRES SOUTH OF BIRCH POINT PROVINCIAL
PARK, MOVING NORTHEAST AT 80 KM/H.
HAZARD: TOONIE SIZE HAIL AND HEAVY RAIN.
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
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