WWCN11 CWTO 300815
YELLOW WARNING - RAINFALL
FOR SOUTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 4:15 A.M. EDT THURSDAY 30 APRIL 2026.
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YELLOW LEVEL WARNING - RAINFALL - FOR:
      BROCKVILLE - PRESCOTT
      MERRICKVILLE-WOLFORD - KEMPTVILLE
      CITY OF OTTAWA
      PRESCOTT AND RUSSELL
      CORNWALL - MORRISBURG
      SMITHS FALLS - PERTH - EASTERN LANARK COUNTY.

YELLOW LEVEL WARNING - RAINFALL - ENDED FOR:
      KINGSTON - PRINCE EDWARD
      TAMWORTH - SYDENHAM - SOUTH FRONTENAC
      GANANOQUE - MALLORYTOWN
      WESTPORT - CHARLESTON LAKE
      PLEVNA - SHARBOT LAKE - WESTERN LANARK COUNTY.

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IMPACT LEVEL: MODERATE
FORECAST CONFIDENCE: HIGH

==DISCUSSION==

RAIN ENDING THIS MORNING. THE GROUND, WHICH IS ALREADY NEARLY 
SATURATED, WILL HAVE A REDUCED ABILITY TO ABSORB MORE RAIN. 

WHAT: 
AN ADDITIONAL 5 MM OF RAINFALL GIVING TOTALS OF 20 TO 40 MM. 

WHEN: 
TAPERING OFF THIS MORNING.

WATER WILL LIKELY POOL ON ROADS AND IN LOW-LYING AREAS. DON'T DRIVE 
THROUGH FLOODED ROADWAYS. WATCH FOR WASHOUTS NEAR RIVERS, CREEKS AND 
CULVERTS. 

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 X USING (HASH)ONSTORM.

HTTP://WEATHER.GC.CA

END/OSPC