WUCN11 CWTO 091743
YELLOW WARNING - SEVERE THUNDERSTORM
FOR SOUTHERN ONTARIO
ISSUED BY ENVIRONMENT CANADA
AT 1:43 P.M. EDT THURSDAY 9 JULY 2026.
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YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:
=NEW= WESTPORT - CHARLESTON LAKE
=NEW= MERRICKVILLE-WOLFORD - KEMPTVILLE
=NEW= MORRISBURG - LONG SAULT
=NEW= WINCHESTER - NEWINGTON
=NEW= SMITHS FALLS - LANARK - SHARBOT LAKE.

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IMPACT LEVEL: MODERATE
FORECAST CONFIDENCE: HIGH

==DISCUSSION==

UPDATED OR ENDED BY 3:42 P.M. EDT.

AT 1:43 P.M. EDT, ENVIRONMENT CANADA METEOROLOGISTS ARE TRACKING A 
SEVERE THUNDERSTORM CAPABLE OF PRODUCING HEAVY RAIN.

THUNDERSTORM LOCATION: 
15 KM SOUTHWEST OF ARDOCH TO 65 KM EAST OF RIDEAU FERRY 

MOTION: MOVING EAST AT 50 KM/H 

HAZARDS: 
RAINFALL UP TO 50 MM 

LOCATIONS IN THE PATH: 
SHARBOT LAKE 
MABERLY 
PERTH 
RIDEAU FERRY 
SMITHS FALLS 
JASPER 
MERRICKVILLE 
SPENCERVILLE 
WILLIAMSBURG

DRIVING CONDITIONS WILL LIKELY BE DIFFICULT. HEAVY RAIN MAY CAUSE 
FLASH FLOODING AND SIGNIFICANT REDUCTIONS TO VISIBILITY. DON'T DRIVE 
THROUGH FLOODED ROADWAYS. SEVERE THUNDERSTORMS CAN PRODUCE 
TORNADOES. 

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