WUCN11 CWTO 222353
YELLOW WARNING - SEVERE THUNDERSTORM
FOR SOUTHERN ONTARIO
ISSUED BY ENVIRONMENT CANADA
AT 7:53 P.M. EDT SATURDAY 22 AUGUST 2026.
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YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:
=NEW= ST. THOMAS - AYLMER - EASTERN ELGIN COUNTY
=NEW= SIMCOE - DELHI - NORFOLK
=NEW= WOODSTOCK - TILLSONBURG - OXFORD COUNTY.

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IMPACT LEVEL: MODERATE
FORECAST CONFIDENCE: HIGH

==DISCUSSION==

UPDATED OR ENDED BY 8:49 P.M. EDT.

AT�7:50 P.M. EDT,�A LINE OF SEVERE THUNDERSTORMS�IS LOCATED�FROM 
BELMONT TO MOUNT SALEM.�THESE SEVERE THUNDERSTORMS ARE MOVING EAST 
AT 55 KM/H.�STRONG WIND GUSTS, UP TO QUARTER SIZE HAIL AND HEAVY 
RAIN ARE POSSIBLE. 

LOCATIONS AND NEARBY AREAS THAT COULD BE IMPACTED INCLUDE: BELMONT, 
AYLMER, PORT BURWELL PROVINCIAL PARK, PORT BURWELL, SPRINGFIELD, 
VIENNA, TILLSONBURG, PORT ROWAN, OTTERVILLE, DELHI

DAMAGE TO ROOFS, FENCES, SOFT SHELTERS OR TREES IS LIKELY. IF YOU 
HEAR ROARING WIND, SEE A FUNNEL CLOUD, FLYING DEBRIS, OR ANY 
THREATENING WEATHER APPROACHING, TAKE SHELTER IMMEDIATELY. HEAVY 
RAIN MAY CAUSE FLASH FLOODING AND SIGNIFICANT REDUCTIONS TO 
VISIBILITY. 

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 SOCIAL MEDIA USING 
(HASH)ONSTORM. 

FOR MORE INFORMATION: 
HTTPS://WWW.ONTARIO.CA/PAGE/BE-PREPARED-EMERGENCY.

HTTP://WEATHER.GC.CA

END/OSPC