001  
WWCN12 CWTO 280406  
YELLOW WARNING - WINTER STORM  
FOR NORTHERN ONTARIO  
UPDATED BY ENVIRONMENT CANADA  
AT 11:06 P.M. EST SATURDAY 27 DECEMBER 2025.  
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YELLOW LEVEL WARNING - WINTER STORM - FOR:  
GREATER SUDBURY AND VICINITY  
MANITOULIN - BLIND RIVER - KILLARNEY  
NORTH BAY - WEST NIPISSING.  
 
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IMPACT LEVEL: HIGH  
FORECAST CONFIDENCE: MODERATE  
 
==DISCUSSION==  
 
SIGNIFICANT WINTER STORM EXPECTED SUNDAY EVENING TO MONDAY NIGHT.  
 
WHAT:  
FREEZING RAIN WITH 10 TO 15 MM OF ICE ACCRETION.  
SNOWFALL AMOUNTS OF 10 TO 20 CM.  
NORTHWESTERLY WIND GUSTS OF 60 TO 70 KM/H.  
REDUCED VISIBILITY IN HEAVY SNOW AND BLOWING SNOW.  
 
WHEN:  
BEGINNING SUNDAY EVENING AND CONTINUING INTO MONDAY NIGHT.  
 
ADDITIONAL INFORMATION:  
PRECIPITATION IS EXPECTED TO BEGIN AS FREEZING RAIN SUNDAY EVENING  
AND CONTINUING THROUGH THE OVERNIGHT. THE FREEZING RAIN IS EXPECTED  
TO TRANSITION TO SNOW THROUGH MONDAY MORNING. DURING THE TRANSITION  
A PERIOD OF ICE PELLETS IS POSSIBLE. THE STRONG NORTHWESTERLY WINDS  
WILL PICK UP THROUGH MONDAY AFTERNOON LEADING TO REDUCED VISIBILITY  
FROM BLOWING SNOW AND FALLING SNOW.  
 
TRAVEL MAY BE HAZARDOUS. VISIBILITY MAY BE SUDDENLY REDUCED TO NEAR  
ZERO AT TIMES. ROAD CLOSURES ARE POSSIBLE. PROLONGED UTILITY OUTAGES  
ARE POSSIBLE. AVOID NON-ESSENTIAL TRAVEL AND OUTDOOR ACTIVITIES.  
PREPARE FOR 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  
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