388
WUCN11 CWTO 191930
YELLOW WARNING - SEVERE THUNDERSTORM
FOR SOUTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 3:30 P.M. EDT TUESDAY 19 MAY 2026.
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YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:
=NEW= WATFORD - PINERY PARK - EASTERN LAMBTON COUNTY
SARNIA - PETROLIA - WESTERN LAMBTON COUNTY.
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IMPACT LEVEL: MODERATE
FORECAST CONFIDENCE: HIGH
==DISCUSSION==
UPDATED OR ENDED BY 5:29 P.M. EDT.
AT 3:30 P.M. EDT, ENVIRONMENT CANADA METEOROLOGISTS ARE TRACKING A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WIND GUSTS AND UP
TO QUARTER SIZE HAIL.
THUNDERSTORM LOCATION: 15KM WEST OF CORUNNA
MOTION: MOVING QUICKLY TO THE EAST AT 65 KM/H
HAZARDS:
WIND: DAMAGING (90 - 110 KM/H)
HAIL: UP TO QUARTER SIZE (UP TO 2.5 CM)
LOCATIONS IN THE PATH:
CORUNNA
SARNIA
BRIGHTS GROVE
OIL SPRINGS
WYOMING
LOCAL UTILITY OUTAGES ARE LIKELY. DAMAGE TO ROOFS, FENCES, SOFT
SHELTERS OR TREES IS LIKELY. 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 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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