WUCN11 CWTO 091943
YELLOW WARNING - SEVERE THUNDERSTORM
FOR SOUTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 3:43 P.M. EDT THURSDAY 9 JULY 2026.
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YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - FOR:
      BROCKVILLE - PRESCOTT
      MERRICKVILLE-WOLFORD - KEMPTVILLE
      MORRISBURG - LONG SAULT
      WINCHESTER - NEWINGTON.

YELLOW LEVEL WARNING - SEVERE THUNDERSTORM - ENDED FOR:
      WESTPORT - CHARLESTON LAKE.

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IMPACT LEVEL: MODERATE
FORECAST CONFIDENCE: HIGH

==DISCUSSION==

UPDATED OR ENDED BY 5:42 P.M. EDT.

AT 3:43 P.M. EDT, ENVIRONMENT CANADA METEOROLOGISTS ARE TRACKING A 
SEVERE THUNDERSTORM CAPABLE OF PRODUCING HEAVY RAIN.

THUNDERSTORM LOCATION: 
ALGONQUIN TO 60 KM NORTHEAST OF NORTH AUGUSTA 

MOTION: 
MOVING EAST AT 25 KM/H 

HAZARDS: 
RAINFALL UP TO 50 MM 

LOCATIONS IN THE PATH: 
SPENCERVILLE 
WILLIAMSBURG 
IROQUOIS 
JOHNSTOWN 
MORRISBURG 
INGLESIDE 
CARDINAL 
PRESCOTT 
LONG SAULT 
MAITLAND

HEAVY RAIN MAY CAUSE FLASH FLOODING AND SIGNIFICANT REDUCTIONS TO 
VISIBILITY. WHEN THUNDER ROARS, GO INDOORS(EXCLAMATION MARK) 
LIGHTNING KILLS AND INJURES CANADIANS EVERY YEAR. DON'T DRIVE 
THROUGH FLOODED ROADWAYS. 

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