414
WUCN11 CWTO 021728
YELLOW WARNING - SEVERE THUNDERSTORM
FOR SOUTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 1:28 P.M. EDT WEDNESDAY 2 SEPTEMBER 2026.
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YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:
=NEW= NEWMARKET - GEORGINA - NORTHERN YORK REGION
CALEDON
DUFFERIN - INNISFIL
HANOVER - DUNDALK - SOUTHERN GREY COUNTY.
YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - ENDED FOR:
MOUNT FOREST - ARTHUR - NORTHERN WELLINGTON COUNTY.
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IMPACT LEVEL: MODERATE
FORECAST CONFIDENCE: HIGH
==DISCUSSION==
UPDATED OR ENDED BY 2:01 P.M. EDT.
AT 1:27 P.M. EDT, A LINE OF SEVERE THUNDERSTORMS IS LOCATED FROM
COOKSTOWN TO MONO CENTRE THEN TO COLBECK. THESE SEVERE THUNDERSTORMS
ARE MOVING EAST AT 45 KM/H. DAMAGING WIND GUSTS, UP TO QUARTER SIZE
HAIL AND HEAVY RAIN ARE POSSIBLE.
LOCATIONS AND NEARBY AREAS THAT COULD BE IMPACTED INCLUDE: DUNDALK,
EVERETT, THORNTON, COOKSTOWN, KESWICK, NEW TECUMSETH, BRADFORD
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.
LOCAL UTILITY OUTAGES ARE LIKELY. DAMAGE TO ROOFS, FENCES, SOFT
SHELTERS OR TREES IS LIKELY. HEAVY RAIN MAY CAUSE FLASH FLOODING AND
SIGNIFICANT REDUCTIONS TO VISIBILITY. THERE IS A RISK OF INJURY.
DON'T DRIVE THROUGH FLOODED ROADWAYS.
SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES.
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 SOCIAL MEDIA USING
(HASH)ONSTORM.
FOR MORE INFORMATION:
HTTPS://WWW.ONTARIO.CA/PAGE/BE-PREPARED-EMERGENCY.
HTTP://WEATHER.GC.CA
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