325
WUCN11 CWTO 182304
YELLOW WARNING - SEVERE THUNDERSTORM
FOR SOUTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 7:04 P.M. EDT MONDAY 18 MAY 2026.
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YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:
LONDON - MIDDLESEX
HURON - PERTH
MOUNT FOREST - ARTHUR - NORTHERN WELLINGTON COUNTY
GREY - BRUCE.
YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - ENDED FOR:
WATFORD - PINERY PARK - EASTERN LAMBTON COUNTY.
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IMPACT LEVEL: MODERATE
FORECAST CONFIDENCE: HIGH
==DISCUSSION==
UPDATED OR ENDED BY 9:03 P.M. EDT.
AT 7:04 P.M. EDT, ENVIRONMENT CANADA METEOROLOGISTS ARE TRACKING A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WIND
GUSTS.
THUNDERSTORM LOCATION: COLPOY'S BAY TO APPIN
MOTION: MOVING EAST AT 70 KM/H
HAZARDS:
WIND: DAMAGING (90 - 110 KM/H)
LOCATIONS IN THE PATH:
PAISLEY
EXETER
WIARTON
TEESWATER
WINGHAM
MOUNT BRYDGES
LUCAN
WALKERTON
OWEN SOUND
LONDON
LOCAL UTILITY OUTAGES ARE LIKELY. DAMAGE TO ROOFS, FENCES, SOFT
SHELTERS OR TREES IS LIKELY. 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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