045  
WWCN11 CWTO 101704  
YELLOW WARNING - RAINFALL  
FOR SOUTHERN ONTARIO  
ISSUED BY ENVIRONMENT CANADA  
AT 1:04 P.M. EDT TUESDAY 10 MARCH 2026.  
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YELLOW LEVEL WARNING - RAINFALL - FOR:  
=NEW= FENELON FALLS - BALSAM LAKE PARK - NORTHERN KAWARTHA LAKES  
=NEW= APSLEY - WOODVIEW - NORTHERN PETERBOROUGH COUNTY  
=NEW= STIRLING - TWEED - SOUTH FRONTENAC  
=NEW= BROCKVILLE - PRESCOTT  
=NEW= WESTPORT - CHARLESTON LAKE  
=NEW= MORRISBURG - LONG SAULT  
=NEW= PORT CARLING - PORT SEVERN  
=NEW= BRACEBRIDGE - GRAVENHURST.  
 
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IMPACT LEVEL: MODERATE  
FORECAST CONFIDENCE: HIGH  
 
==DISCUSSION==  
 
RAIN, HEAVY AT TIMES IS EXPECTED. THE SATURATED OR FROZEN GROUND  
WILL HAVE LITTLE ABILITY TO ABSORB THIS RAINFALL.  
 
WHAT:  
RAINFALL AMOUNTS OF 20 TO 40 MM. LOCALLY HIGHER AMOUNTS ARE POSSIBLE  
IN AREAS THAT RECEIVE THUNDERSTORMS.  
 
WHEN:  
BEGINNING TONIGHT OR WEDNESDAY MORNING AND LASTING THROUGH  
WEDNESDAY.  
 
ADDITIONAL INFORMATION:  
A SERIES OF LOW PRESSURE SYSTEMS WILL LEAD TO SIGNIFICANT RAINFALL  
ACROSS PARTS OF SOUTHERN ONTARIO.  
 
THERE IS ALSO A FREEZING RAIN WARNING IN EFFECT FOR THE REGION FOR A  
POSSIBLE PERIOD OF FREEZING RAIN BEFORE CHANGING OVER TO RAIN.  
 
FOR INFORMATION CONCERNING FLOODING, PLEASE CONSULT YOUR LOCAL  
CONSERVATION AUTHORITY OR ONTARIO MINISTRY OF NATURAL RESOURCES  
OFFICE. VISIT ONTARIO.CA/FLOODS FOR THE LATEST DETAILS.  
 
WATER WILL LIKELY POOL ON ROADS AND IN LOW-LYING AREAS. DON'T DRIVE  
THROUGH FLOODED ROADWAYS. AVOID LOW-LYING AREAS. WATCH FOR WASHOUTS  
NEAR RIVERS, CREEKS AND CULVERTS.  
 
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.  
 
HTTP://WEATHER.GC.CA  
 
END/OSPC  
 
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