777
WWCN11 CWTO 281805
ORANGE WATCH - SNOW SQUALL
FOR SOUTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 1:05 P.M. EST SUNDAY 28 DECEMBER 2025.
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ORANGE LEVEL WATCH - SNOW SQUALL - FOR:
=NEW= OWEN SOUND - BLUE MOUNTAINS - NORTHERN GREY COUNTY
LONDON - PARKHILL - EASTERN MIDDLESEX COUNTY
HURON - PERTH
MOUNT FOREST - ARTHUR - NORTHERN WELLINGTON COUNTY
SAUGEEN SHORES - KINCARDINE - SOUTHERN BRUCE COUNTY
HANOVER - DUNDALK - SOUTHERN GREY COUNTY.
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IMPACT LEVEL: EXTREME
FORECAST CONFIDENCE: HIGH
==DISCUSSION==
DANGEROUS SNOW SQUALLS AND BLIZZARD CONDITIONS MONDAY INTO TUESDAY.
WHAT:
BLIZZARD CONDITIONS WITH NEAR ZERO VISIBILITY.
STRONG WIND GUSTS OF 70 TO 90 KM/H.
TOTAL SNOWFALL AMOUNTS OF 20 TO 40 CM BY TUESDAY MORNING.
WHEN:
MONDAY MORNING INTO TUESDAY.
ADDITIONAL INFORMATION:
A COLDER AIR MASS IN THE WAKE OF A DEPARTING LOW PRESSURE SYSTEM
WILL RESULT IN THE DEVELOPMENT OF LAKE EFFECT SNOW SQUALLS OFF LAKE
HURON. WIDESPREAD BLOWING SNOW AND BLIZZARD CONDITIONS WILL BE THE
PRIMARY CONCERN AS NORTHWESTERLY WIND GUSTS OF 70 TO 90 KM/H ARE
EXPECTED.
TRAVEL MAY BE HAZARDOUS AND SOME ROUTES MAY BE IMPASSABLE.
VISIBILITY MAY BE SUDDENLY REDUCED TO NEAR ZERO AT TIMES. ROAD
CLOSURES ARE POSSIBLE. RESCHEDULE TRAVEL AND OUTDOOR ACTIVITIES.
PREPARE FOR THE POSSIBILITY OF QUICKLY CHANGING AND DETERIORATING
TRAVEL CONDITIONS. PREPARE FOR POSSIBLE PROLONGED DISRUPTIONS TO
TRANSPORTATION, SERVICES, AND UTILITIES.
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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