939  
WUCN11 CWTO 191844  
YELLOW WARNING - SEVERE THUNDERSTORM  
FOR SOUTHERN ONTARIO  
ISSUED BY ENVIRONMENT CANADA  
AT 2:44 P.M. EDT TUESDAY 19 MAY 2026.  
---------------------------------------------------------------------  
YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:  
=NEW= SARNIA - PETROLIA - WESTERN LAMBTON COUNTY.  
 
---------------------------------------------------------------------  
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  
 
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