WUCN11 CWTO 192318
RED WARNING - SEVERE THUNDERSTORM
FOR SOUTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 7:18 P.M. EDT TUESDAY 19 MAY 2026.
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RED LEVEL WARNING - SEVERE THUNDERSTORM - FOR:
      DUNNVILLE - CALEDONIA - HALDIMAND
      NIAGARA
      CITY OF HAMILTON.

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IMPACT LEVEL: EXTREME
FORECAST CONFIDENCE: VERY HIGH

==DISCUSSION==

UPDATED OR ENDED BY 9:16 P.M. EDT.

AT 7:17 P.M. EDT, ENVIRONMENT CANADA METEOROLOGISTS ARE TRACKING AN 
EXTREMELY DANGEROUS THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE 
WIND GUSTS.

THUNDERSTORM LOCATION: BINBROOK TO EMPIRE CORNERS TO SELKIRK 
PROVINCIAL PARK 

MOTION: MOVING QUICKLY TO THE EAST AT 90 KM/H 

HAZARDS: 
WIND: DESTRUCTIVE (130+ KM/H) 
RISK OF TORNADO 
HAIL: UP TO QUARTER SIZE (UP TO 2.5 CM) 

LOCATIONS IN THE PATH: 
CAYUGA 
DUNNVILLE 
BEAMSVILLE 
VINELAND 
ST. CATHARINES 
WELLAND 
THOROLD 
PORT COLBORNE 
NIAGARA FALLS 
FORT ERIE

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