WWCN11 CWTO 111249
ORANGE WARNING - RAINFALL
FOR SOUTHERN ONTARIO
ISSUED BY ENVIRONMENT CANADA
AT 8:49 A.M. EDT WEDNESDAY 11 MARCH 2026.
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ORANGE LEVEL WARNING - RAINFALL - FOR:
      GODERICH - BLUEWATER - SOUTHERN HURON COUNTY
      WINGHAM - BLYTH - NORTHERN HURON COUNTY
      LISTOWEL - MILVERTON - NORTHERN PERTH COUNTY
      MOUNT FOREST - ARTHUR - NORTHERN WELLINGTON COUNTY
      SAUGEEN SHORES - KINCARDINE - SOUTHERN BRUCE COUNTY
      HANOVER - DUNDALK - SOUTHERN GREY COUNTY
      OWEN SOUND - BLUE MOUNTAINS - NORTHERN GREY COUNTY.

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IMPACT LEVEL: HIGH
FORECAST CONFIDENCE: HIGH

==DISCUSSION==

RAIN, HEAVY AT TIMES IS EXPECTED. THE SATURATED OR FROZEN GROUND 
WILL HAVE LITTLE ABILITY TO ABSORB THIS RAINFALL. 

WHAT: 
ADDITIONAL RAINFALL AMOUNTS OF 20 TO 30 MM GIVING TOTALS OF 50 TO 80 
MM. 

WHEN: 
THIS MORNING AND LASTING THROUGH THE DAY. 

ADDITIONAL INFORMATION: 
PORTIONS OF THE REGION HAVE RECEIVED VERY HEAVY RAIN DURING THE 
NIGHT WITH SOME STATIONS REPORTING NEARLY 50 MM. A BREAK IN THE 
PRECIPITATION IS OCCURRING EARLY THIS MORNING, BUT ADDITIONAL 
RAINFALL IS EXPECTED TO MOVE INTO THE REGION LATER THIS MORNING AND 
PERSIST INTO THE AFTERNOON. RAINFALL WILL TAPER OFF LATER THIS 
AFTERNOON. 

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.

LOCALIZED FLOODING IS LIKELY. SOME ROADS MAY BECOME IMPASSABLE. 
FAST-MOVING AND RAPIDLY RISING WATER CAN SWEEP VEHICLES AWAY AND 
DAMAGE INFRASTRUCTURE. DON'T DRIVE THROUGH FLOODED ROADWAYS. STAY 
AWAY FROM 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