643
WWCN12 CWTO 120236
YELLOW WARNING - RAINFALL
FOR NORTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 10:36 P.M. EDT FRIDAY 11 SEPTEMBER 2026.
---------------------------------------------------------------------
YELLOW LEVEL WARNING - RAINFALL - FOR:
SEINE RIVER VILLAGE - MINE CENTRE
ATIKOKAN - UPSALA - QUETICO
KAKABEKA FALLS - WHITEFISH LAKE - ARROW LAKE
GULL BAY - BLACK STURGEON LAKE
BEARDMORE - JELLICOE - MACDIARMID
NIPIGON - ROSSPORT.
---------------------------------------------------------------------
IMPACT LEVEL: MODERATE
FORECAST CONFIDENCE: HIGH
==DISCUSSION==
RAIN, AT TIMES HEAVY, AND THUNDERSTORMS TONIGHT.
WHAT:
TOTAL LOCAL RAINFALL AMOUNTS OF 50 TO 100 MM.
PEAK RAINFALL RATES OF 40 MM IN AN HOUR.
WHEN:
CONTINUING THROUGH TONIGHT.
ADDITIONAL INFORMATION:
RAINFALL AMOUNTS WILL BE HIGHLY VARIABLE ACROSS THE REGION. THE
HIGHEST RAINFALL TOTALS ARE LIKELY TO OCCUR IN A NARROW CORRIDOR
BETWEEN ATIKOKAN AND UPSALA WHERE AS OF 9 P.M. CDT RADAR ESTIMATES
THAT 50 TO 75 MM HAS ALREADY FALLEN.
RAIN WILL TAPER TO SCATTERED SHOWERS FROM WEST TO EAST OVERNIGHT.
WATER WILL LIKELY POOL ON ROADS AND IN LOW-LYING AREAS. VISIBILITY
WILL LIKELY BE SUDDENLY REDUCED AT TIMES. 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, SEND AN EMAIL TO
ONSTORM(AT)EC.GC.CA OR POST REPORTS ON SOCIAL MEDIA USING
(HASH)ONSTORM.
HTTP://WEATHER.GC.CA
END/OSPC
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page