WWCN11 CWTO 062218

YELLOW WATCH - SEVERE THUNDERSTORM

FOR SOUTHERN ONTARIO

UPDATED BY ENVIRONMENT CANADA

AT 6:18 P.M. EDT SATURDAY 6 JUNE 2026.

---------------------------------------------------------------------

YELLOW LEVEL WATCH - SEVERE THUNDERSTORM - FOR:

      BELLEVILLE - QUINTE WEST - EASTERN NORTHUMBERLAND COUNTY

      KINGSTON - PRINCE EDWARD

      STIRLING - TWEED - SOUTH FRONTENAC

      BROCKVILLE - LEEDS AND GRENVILLE

      CITY OF OTTAWA

      GATINEAU

      PRESCOTT AND RUSSELL

      CORNWALL - MORRISBURG

      SMITHS FALLS - LANARK - SHARBOT LAKE.



---------------------------------------------------------------------

IMPACT LEVEL: MODERATE

FORECAST CONFIDENCE: HIGH



==DISCUSSION==



CONDITIONS ARE FAVOURABLE FOR THE DEVELOPMENT OF SEVERE 

THUNDERSTORMS THAT MAY BE CAPABLE OF PRODUCING STRONG WIND GUSTS AND 

HEAVY RAIN.



HAZARDS: 

WIND GUSTS OF 90 KM/H 

LOCAL RAINFALL AMOUNTS IN EXCESS OF 50 MM 



TIMING: 

ENDING THIS EVENING. 



ADDITIONAL INFORMATION: 

SCATTERED THUNDERSTORMS THIS EVENING WILL HAVE THE POTENTIAL TO 

PRODUCE WIND GUSTS OF 90 KM/H. MULTIPLE ROUNDS OF THUNDERSTORMS ARE 

POSSIBLE FOR SOME AREAS, WHICH MAY GIVE RAINFALL TOTALS APPROACHING 

50 MM AS WELL. 



THE THREAT OF STRONG THUNDERSTORM WIND GUSTS WILL DIMINISH THIS 

EVENING.



WHEN THUNDER ROARS, GO INDOORS(EXCLAMATION MARK) LIGHTNING KILLS AND 

INJURES CANADIANS EVERY YEAR. HEAVY RAIN CAN CAUSE FLASH FLOODING 

AND SIGNIFICANT REDUCTIONS TO VISIBILITY. STRONG WIND GUSTS CAN 

DAMAGE TREES, BUILDINGS AND OVERTURN VEHICLES. 



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