WUCN11 CWTO 301707

ORANGE WARNING - SEVERE THUNDERSTORM

FOR SOUTHERN ONTARIO

UPDATED BY ENVIRONMENT CANADA

AT 1:07 P.M. EDT TUESDAY 30 JUNE 2026.

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ORANGE LEVEL WARNING - SEVERE THUNDERSTORM - FOR:

=NEW= TAMWORTH - SYDENHAM - SOUTH FRONTENAC

      NAPANEE - CONSECON

      WESTPORT - CHARLESTON LAKE.



ORANGE LEVEL WARNING - SEVERE THUNDERSTORM - ENDED FOR:

      STIRLING - TWEED - MADOC.



ORANGE LEVEL WARNING - SEVERE THUNDERSTORM - REPLACES RED LEVEL 

WARNING - TORNADO - FOR:

      TAMWORTH - SYDENHAM - SOUTH FRONTENAC.



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IMPACT LEVEL: HIGH

FORECAST CONFIDENCE: HIGH



==DISCUSSION==



UPDATED OR ENDED BY 3:06 P.M. EDT.



AT 1:07 P.M. EDT, ENVIRONMENT CANADA METEOROLOGISTS ARE TRACKING A 

DANGEROUS THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WIND GUSTS, UP 

TO QUARTER SIZE HAIL AND HEAVY RAIN.



THUNDERSTORM LOCATION: 

NAPANEE TO WESTPORT. 



MOTION: 

MOVING SOUTHEAST AT 80 KM/H 



HAZARDS: 

WIND: DAMAGING (90 - 120 KM/H) 

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

RAIN: HEAVY (30 - 50 MM) 



LOCATIONS IN THE PATH: 

NEWBURGH, NAPANEE, LYNDHURST, KINGSTON



UTILITY OUTAGES ARE LIKELY. HEAVY RAIN WILL LIKELY CAUSE FLASH 

FLOODING AND SIGNIFICANT REDUCTIONS TO VISIBILITY. LARGE HAIL WILL 

LIKELY CAUSE SIGNIFICANT DAMAGE AND INJURY. 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



END/OSPC