100  
WWCN11 CWTO 280635  
YELLOW WARNING - RAINFALL  
FOR SOUTHERN ONTARIO  
UPDATED BY ENVIRONMENT CANADA  
AT 2:35 A.M. EDT TUESDAY 28 JULY 2026.  
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YELLOW LEVEL WARNING - RAINFALL - FOR:  
NEWMARKET - GEORGINA - NORTHERN YORK REGION  
UXBRIDGE - BEAVERTON - NORTHERN DURHAM REGION  
ORILLIA - LAGOON CITY - WASHAGO  
FENELON FALLS - BALSAM LAKE PARK - NORTHERN KAWARTHA LAKES  
APSLEY - WOODVIEW - NORTHERN PETERBOROUGH COUNTY  
KALADAR - BANNOCKBURN - BON ECHO PARK  
BRACEBRIDGE - GRAVENHURST  
HALIBURTON - MINDEN - SOUTHERN HALIBURTON COUNTY.  
 
YELLOW LEVEL WARNING - RAINFALL - ENDED FOR:  
INNISFIL - NEW TECUMSETH - ANGUS  
BARRIE - COLLINGWOOD - HILLSDALE  
MIDLAND - COLDWATER - ORR LAKE  
PORT CARLING - PORT SEVERN.  
 
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IMPACT LEVEL: MODERATE  
FORECAST CONFIDENCE: HIGH  
 
==DISCUSSION==  
 
HEAVY RAIN IS EXPECTED.  
 
WHAT:  
HEAVY RAINFALL WITH AMOUNTS OF 50 TO 100 MM  
 
WHEN:  
ENDING BEFORE DAWN THIS MORNING.  
 
ADDITIONAL INFORMATION:  
THUNDERSTORMS WILL CONTINUE TO MOVE THROUGH THE AREA BRINGING HEAVY  
RAINFALL.  
 
WATER WILL LIKELY POOL ON ROADS AND IN LOW-LYING AREAS. DON'T DRIVE  
THROUGH FLOODED ROADWAYS.  
 
FOR INFORMATION CONCERNING FLOODING, PLEASE CONSULT YOUR LOCAL  
CONSERVATION AUTHORITY OR ONTARIO MINISTRY OF NATURAL RESOURCES  
OFFICE. VISIT HTTPS://WWW.ONTARIO.CA/PAGE/FLOODS FOR THE LATEST  
DETAILS.  
 
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 SOCIAL MEDIA USING  
(HASH)ONSTORM.  
 
HTTP://WEATHER.GC.CA  
 
END/OSPC  
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