401
WUCN11 CWTO 241254
SEVERE THUNDERSTORM WARNING
FOR SOUTHERN ONTARIO
ISSUED BY ENVIRONMENT CANADA
AT 8:54 A.M. EDT WEDNESDAY 24 SEPTEMBER 2025.
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SEVERE THUNDERSTORM WARNING FOR:
=NEW= MOUNT FOREST - ARTHUR - NORTHERN WELLINGTON COUNTY
=NEW= ORANGEVILLE - GRAND VALLEY - SOUTHERN DUFFERIN COUNTY.
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==DISCUSSION==
UPDATED OR ENDED BY 10:52 A.M. EDT.
AT 8:53 A.M. EDT, ENVIRONMENT CANADA METEOROLOGISTS ARE TRACKING A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING TORRENTIAL RAIN.
THIS CLUSTER OF SEVERE THUNDERSTORMS IS LOCATED FROM MOOREFIELD TO
GRAND VALLEY, MOVING NORTH AT 15 KM/H.
HAZARD:
HEAVY RAIN WITH TOTAL AMOUNTS OF 60 MM.
LOCATIONS IMPACTED INCLUDE:
ARTHUR, GRAND VALLEY, TEVIOTDALE, MOOREFIELD, ROTHSAY, KENILWORTH,
DAMASCUS AND LUTHER LAKE.
HEAVY RAIN MAY CAUSE FLASH FLOODING AND SIGNIFICANT REDUCTIONS TO
VISIBILITY. FAST-MOVING AND RAPIDLY RISING WATER CAN SWEEP VEHICLES
AWAY AND DAMAGE INFRASTRUCTURE. AVOID LOW-LYING AREAS.
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 IN ONTARIO, 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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