545
WWCN11 CWTO 290926
ORANGE WARNING - SNOW SQUALL
FOR SOUTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 4:26 A.M. EST MONDAY 29 DECEMBER 2025.
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ORANGE LEVEL WARNING - SNOW SQUALL - FOR:
MOUNT FOREST - ARTHUR - NORTHERN WELLINGTON COUNTY
BRUCE PENINSULA - SAUBLE BEACH - TOBERMORY
HANOVER - DUNDALK - SOUTHERN GREY COUNTY
OWEN SOUND - BLUE MOUNTAINS - NORTHERN GREY COUNTY.
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IMPACT LEVEL: EXTREME
FORECAST CONFIDENCE: HIGH
==DISCUSSION==
DANGEROUS SNOW SQUALLS AND BLIZZARD CONDITIONS TODAY INTO TUESDAY.
WHAT:
BLIZZARD CONDITIONS.
TOTAL LOCAL SNOWFALL AMOUNTS OF 20 TO 40 CM.
WHEN:
THIS MORNING EASING TO SCATTERED FLURRIES TUESDAY AFTERNOON.
ADDITIONAL INFORMATION:
AN INITIAL BRIEF, INTENSE SNOW SQUALL IS EXPECTED THIS MORNING ALONG
A COLD FRONT. A QUICK 5 CM OF SNOW IS EXPECTED FROM THIS SNOW SQUALL
AS WELL AS A RAPID TEMPERATURE DROP, LEADING TO ICY SURFACES.
LAKE EFFECT SNOW SQUALLS OFF LAKE HURON WILL ALSO DEVELOP THIS
MORNING. WIDESPREAD BLOWING SNOW AND BLIZZARD CONDITIONS WILL BE THE
PRIMARY CONCERN AS NORTHWESTERLY WIND GUSTS OF 70 TO 90 KM/H ARE
EXPECTED MONDAY INTO MONDAY NIGHT.
TRAVEL WILL LIKELY BE EXTREMELY HAZARDOUS AND SOME ROUTES WILL
LIKELY BE IMPASSABLE. VISIBILITY WILL LIKELY BE SUDDENLY REDUCED TO
NEAR ZERO AT TIMES. ROAD CLOSURES ARE LIKELY. PROLONGED, WIDESPREAD
UTILITY OUTAGES ARE LIKELY. PREPARE FOR EXTREMELY DANGEROUS TRAVEL
CONDITIONS.
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.
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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