787
WUCN11 CWTO 192343
YELLOW WARNING - SEVERE THUNDERSTORM
FOR SOUTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 7:43 P.M. EDT TUESDAY 19 MAY 2026.
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YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:
DUNNVILLE - CALEDONIA - HALDIMAND
NIAGARA.
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IMPACT LEVEL: MODERATE
FORECAST CONFIDENCE: HIGH
==DISCUSSION==
UPDATED OR ENDED BY 9:41 P.M. EDT.
AT 7:42 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: JORDAN HARBOUR TO LOWBANKS
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:
BEAMSVILLE
VINELAND
ST. CATHARINES
WELLAND
THOROLD
PORT COLBORNE
NIAGARA FALLS
FORT ERIE
LOCAL UTILITY OUTAGES ARE LIKELY. DAMAGE TO ROOFS, FENCES, SOFT
SHELTERS OR TREES IS LIKELY. 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
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