450
WWCN12 CWTO 280853
YELLOW WARNING - RAINFALL
FOR NORTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 4:53 A.M. EDT TUESDAY 28 APRIL 2026.
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YELLOW LEVEL WARNING - RAINFALL - FOR:
CITY OF THUNDER BAY
ATIKOKAN - UPSALA - QUETICO
SUPERIOR WEST
LAKE NIPIGON - WABAKIMI
NIPIGON - MARATHON - SUPERIOR NORTH.
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IMPACT LEVEL: HIGH
FORECAST CONFIDENCE: MODERATE
==DISCUSSION==
RAIN, AT TIMES HEAVY, CONTINUES EARLY THIS MORNING. THE FROZEN OR
NEARLY SATURATED GROUND HAS A REDUCED ABILITY TO ABSORB THIS
RAINFALL.
WHAT:
RAINFALL AMOUNTS OF 25 TO 40 MM.
WHEN:
ENDING THIS MORNING.
ADDITIONAL INFORMATION:
AREAS NEAR LAKE NIPIGON MAY TRANSITION TO SNOW THIS MORNING.
LOCALIZED FLOODING IS POSSIBLE. SOME ROADS MAY BECOME IMPASSABLE.
DON'T DRIVE THROUGH FLOODED ROADWAYS. STAY AWAY FROM 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, 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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