WUCN11 CWTO 200008
YELLOW WARNING - SEVERE THUNDERSTORM
FOR SOUTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 8:08 P.M. EDT TUESDAY 19 MAY 2026.
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YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:
      NIAGARA FALLS - WELLAND - SOUTHERN NIAGARA REGION.

YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - ENDED FOR:
      DUNNVILLE - CALEDONIA - HALDIMAND
      ST. CATHARINES - GRIMSBY - NORTHERN NIAGARA REGION.

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IMPACT LEVEL: MODERATE
FORECAST CONFIDENCE: HIGH

==DISCUSSION==

UPDATED OR ENDED BY 10:06 P.M. EDT.

AT 8:07 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: CHIPPAWA TO OSTRYHON CORNERS 

MOTION: MOVING QUICKLY TO THE EAST AT 80 KM/H 

HAZARDS: 
WIND: DAMAGING (90 - 110 KM/H) 
HAIL: UP TO QUARTER SIZE (UP TO 2.5 CM) 

LOCATIONS IN THE PATH: 
NIAGARA FALLS 
WELLAND 
FORT ERIE

LOCAL UTILITY OUTAGES ARE LIKELY. DAMAGE TO ROOFS, FENCES, SOFT 
SHELTERS OR TREES IS LIKELY. 

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