990
WUCN11 CWTO 182209
YELLOW WARNING - SEVERE THUNDERSTORM
FOR SOUTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 6:09 P.M. EDT MONDAY 18 MAY 2026.
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YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:
=NEW= LONDON - MIDDLESEX
WINDSOR - ESSEX - CHATHAM-KENT
SARNIA - LAMBTON.
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IMPACT LEVEL: MODERATE
FORECAST CONFIDENCE: HIGH
==DISCUSSION==
UPDATED OR ENDED BY 8:07 P.M. EDT.
AT 6:08 P.M. EDT, ENVIRONMENT CANADA METEOROLOGISTS ARE TRACKING A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WIND
GUSTS.
THUNDERSTORM LOCATION: SARNIA TO BEAVER MEADOW TO WHEATLEY
MOTION: MOVING QUICKLY TO THE EAST AT 70 KM/H
HAZARDS:
WIND: DAMAGING (90 - 110 KM/H)
LOCATIONS IN THE PATH:
DRESDEN
SARNIA
CHATHAM
CHATHAM-KENT
BRIGHTS GROVE
THAMESVILLE
WYOMING
BOTHWELL
RIDGETOWN
WATFORD
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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