WUCN11 CWTO 301530

YELLOW WARNING - SEVERE THUNDERSTORM

FOR SOUTHERN ONTARIO

ISSUED BY ENVIRONMENT CANADA

AT 11:30 A.M. EDT TUESDAY 30 JUNE 2026.

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YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:

=NEW= PLEVNA - SHARBOT LAKE - WESTERN LANARK COUNTY

=NEW= HALIBURTON - MINDEN - SOUTHERN HALIBURTON COUNTY

      BANCROFT - BON ECHO PARK

      OXTONGUE LAKE - FORT IRWIN - NORTHERN HALIBURTON COUNTY.



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IMPACT LEVEL: MODERATE

FORECAST CONFIDENCE: HIGH



==DISCUSSION==



UPDATED OR ENDED BY 1:29 P.M. EDT.



AT 11:30 A.M. EDT, ENVIRONMENT CANADA METEOROLOGISTS ARE TRACKING A 

LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WIND 

GUSTS, UP TO QUARTER SIZE HAIL AND HEAVY RAIN.



THUNDERSTORM LOCATION: 

AN AREA FROM FORT IRWIN TO PALMER RAPIDS, EXTENDING SOUTHEAST TO 

KALADAR. 



MOTION: MOVING SOUTHEAST AT 30 KM/H 



HAZARDS: 

WIND: STRONG (90 - 100 KM/H) 

HAIL: UP TO QUARTER SIZE (UP TO 2.5 CM) 

RAIN: HEAVY (25 - 50 MM) 



LOCATIONS IN THE PATH: 

PALMER RAPIDS, MAYNOOTH, GRIFFITH, BANCROFT, DENBIGH, CARDIFF, 

PLEVNA, CLOYNE, NORTHBROOK, FLINTON



LOCAL UTILITY OUTAGES ARE LIKELY. DAMAGE TO ROOFS, FENCES, SOFT 

SHELTERS OR TREES IS LIKELY. HEAVY RAIN MAY CAUSE FLASH FLOODING AND 

SIGNIFICANT REDUCTIONS TO VISIBILITY. TAKE IMMEDIATE COVER IF A 

THUNDERSTORM APPROACHES. IF OUTSIDE, PROTECT YOURSELF FROM FLYING 

DEBRIS AND HAIL. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES. 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