WWCN12 CWTO 122136

YELLOW WARNING - SNOW SQUALL

FOR NORTHERN ONTARIO

ISSUED BY ENVIRONMENT CANADA

AT 4:36 P.M. EST FRIDAY 12 DECEMBER 2025.

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YELLOW LEVEL WARNING - SNOW SQUALL - FOR:

=NEW= SAULT STE. MARIE - ST. JOSEPH ISLAND

=NEW= SEARCHMONT - MONTREAL RIVER HARBOUR - BATCHAWANA BAY.



YELLOW LEVEL WARNING - SNOW SQUALL - REPLACES YELLOW LEVEL WATCH - 

SNOW SQUALL - FOR:

      SAULT STE. MARIE - ST. JOSEPH ISLAND

      SEARCHMONT - MONTREAL RIVER HARBOUR - BATCHAWANA BAY.



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IMPACT LEVEL: MODERATE

FORECAST CONFIDENCE: VERY HIGH



==DISCUSSION==



LAKE EFFECT SNOW SQUALLS BEGINNING OVERNIGHT INTO SATURDAY NIGHT. 



HAZARDS: 

SNOWFALL AMOUNTS OF 20 TO 35 CM WITH LOCALLY HIGHER AMOUNTS 

POSSIBLE. 

SIGNIFICANTLY REDUCED VISIBILITY IN AREAS WITH HEAVY SNOW AND 

BLOWING SNOW. 



TIMING: 

BEGINNING OVERNIGHT INTO SATURDAY NIGHT. 



ADDITIONAL INFORMATION: 

LAKE EFFECT SNOW SQUALLS WILL LIKELY MOVE SOUTH OF SAULT STE. MARIE 

BY EARLY SUNDAY MORNING. 



HIGHWAY 17 CLOSURES ARE IN EFFECT FROM WAWA TO BATCHAWANA BAY.



TRAVEL WILL BE HAZARDOUS. ROADS AND WALKWAYS WILL BE DIFFICULT TO 

NAVIGATE DUE TO ACCUMULATING SNOW. PREPARE FOR QUICKLY CHANGING AND 

DETERIORATING TRAVEL CONDITIONS. PREPARE FOR POSSIBLE DISRUPTIONS TO 

TRANSPORTATION, SERVICES, AND UTILITIES. 



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. 



FOR MORE INFORMATION ABOUT THE ALERTING PROGRAM, PLEASE VISIT: 

HTTPS://WWW.CANADA.CA/EN/SERVICES/ENVIRONMENT/WEATHER/SEVEREWEATHER/WEATHER-ALERTS/COLOUR-CODED-ALERTS.



HTTP://WEATHER.GC.CA



END/OSPC