WWCN11 CWTO 142249

YELLOW WATCH - SEVERE THUNDERSTORM

FOR SOUTHERN ONTARIO

UPDATED BY ENVIRONMENT CANADA

AT 6:49 P.M. EDT TUESDAY 14 JULY 2026.

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YELLOW LEVEL WATCH - SEVERE THUNDERSTORM - FOR:

      BROCKVILLE - PRESCOTT

      MERRICKVILLE-WOLFORD - KEMPTVILLE

      CITY OF OTTAWA

      GATINEAU

      PRESCOTT AND RUSSELL

      CORNWALL - MORRISBURG

      SMITHS FALLS - PERTH - EASTERN LANARK COUNTY

      RENFREW - ARNPRIOR - CALABOGIE

      PETAWAWA - PEMBROKE - COBDEN.



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IMPACT LEVEL: HIGH

FORECAST CONFIDENCE: MODERATE



==DISCUSSION==



CONDITIONS ARE FAVOURABLE FOR THE DEVELOPMENT OF SEVERE 

THUNDERSTORMS THAT MAY BE CAPABLE OF PRODUCING STRONG WIND GUSTS AND 

LARGE HAIL.



WHAT: 

WIND GUSTS OF 90 TO 110 KM/H. 

QUARTER TO PING PONG BALL SIZE HAIL. 



WHEN: 

THIS EVENING. 



ADDITIONAL INFORMATION: 

RAPIDLY DEVELOPING THUNDERSTORMS REMAIN POSSIBLE THIS EVENING. 

FOREST FIRE SMOKE ALOFT MAY LIMIT THE DEVELOPMENT OF THUNDERSTORMS.



UTILITY OUTAGES ARE POSSIBLE. SIGNIFICANT DAMAGE TO PROPERTY, 

BUILDINGS AND TREES IS POSSIBLE. WHEN THUNDER ROARS, GO 

INDOORS(EXCLAMATION MARK) LIGHTNING KILLS AND INJURES CANADIANS 

EVERY YEAR. LARGE HAIL CAN CAUSE SIGNIFICANT DAMAGE AND INJURY. 



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. TO 

REPORT SEVERE WEATHER IN GATINEAU, SEND AN EMAIL TO 

ONSTORM(AT)EC.GC.CA OR POST REPORTS ON X USING (HASH)QCSTORM. 



FOR MORE INFORMATION: 

HTTPS://WWW.ONTARIO.CA/PAGE/BE-PREPARED-EMERGENCY.



HTTP://WEATHER.GC.CA



END/OSPC