WUCN11 CWTO 191844
YELLOW WARNING - SEVERE THUNDERSTORM
FOR SOUTHERN ONTARIO
ISSUED BY ENVIRONMENT CANADA
AT 2:44 P.M. EDT TUESDAY 19 MAY 2026.
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YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:
=NEW= SARNIA - PETROLIA - WESTERN LAMBTON COUNTY.

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IMPACT LEVEL: MODERATE
FORECAST CONFIDENCE: HIGH

==DISCUSSION==

UPDATED OR ENDED BY 4:43 P.M. EDT.

AT 2:44 P.M. EDT, ENVIRONMENT CANADA METEOROLOGISTS ARE TRACKING A 
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WIND GUSTS AND UP 
TO QUARTER SIZE HAIL.

A SEVERE THUNDERSTORM WAS LOCATED 45 KILOMETRES NORTHWEST OF 
WINDSOR, MOVING EAST AT 70 KM/H. 

HAZARDS: 
- 100 KM/H WIND GUSTS. 
- QUARTER SIZE HAIL. 

LOCATIONS IMPACTED INCLUDE: 
SARNIA, PORT LAMBTON, SOMBRA, COURTRIGHT, CORUNNA, WILKESPORT, POINT 
EDWARD, BRIGDEN, BENTPATH.

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

END/OSPC