818
WWCN11 CWTO 110933
YELLOW WARNING - SNOW SQUALL
FOR SOUTHERN ONTARIO
ISSUED BY ENVIRONMENT CANADA
AT 4:33 A.M. EST SUNDAY 11 JANUARY 2026.
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YELLOW LEVEL WARNING - SNOW SQUALL - FOR:
=NEW= HURON - PERTH
=NEW= SHELBURNE - MANSFIELD - NORTHERN DUFFERIN COUNTY
=NEW= INNISFIL - NEW TECUMSETH - ANGUS
=NEW= SAUGEEN SHORES - KINCARDINE - SOUTHERN BRUCE COUNTY
=NEW= HANOVER - DUNDALK - SOUTHERN GREY COUNTY
=NEW= OWEN SOUND - BLUE MOUNTAINS - NORTHERN GREY COUNTY
=NEW= BARRIE - COLLINGWOOD - HILLSDALE.
YELLOW LEVEL WARNING - SNOW SQUALL - REPLACES YELLOW LEVEL WATCH -
SNOW SQUALL - FOR:
HURON - PERTH
SHELBURNE - MANSFIELD - NORTHERN DUFFERIN COUNTY
INNISFIL - NEW TECUMSETH - ANGUS
SAUGEEN SHORES - KINCARDINE - SOUTHERN BRUCE COUNTY
HANOVER - DUNDALK - SOUTHERN GREY COUNTY
OWEN SOUND - BLUE MOUNTAINS - NORTHERN GREY COUNTY
BARRIE - COLLINGWOOD - HILLSDALE.
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IMPACT LEVEL: MODERATE
FORECAST CONFIDENCE: HIGH
==DISCUSSION==
SNOW SQUALLS ARE EXPECTED. UNDER THE SNOW SQUALL BANDS, VISIBILITY
WILL BE SIGNIFICANTLY REDUCED DUE TO THE HEAVY SNOW COMBINED WITH
BLOWING SNOW, AND SNOW WILL QUICKLY ACCUMULATE.
SNOW SQUALLS EXPECTED TODAY.
WHAT:
POOR VISIBILITY IN BURSTS OF HEAVIER SNOW AND BLOWING SNOW.
LOCAL SNOWFALL ACCUMULATIONS UP TO 10 CM.
WHEN:
TODAY.
ADDITIONAL INFORMATION:
LAKE EFFECT SNOW OFF LAKE HURON AND GEORGIAN BAY IS EXPECTED TO
RAPIDLY DEVELOP THIS MORNING WITH THE PASSAGE OF A COLD FRONT.
STRONG NORTHWESTERLY WINDS GUSTING UP TO 70 KM/H WILL ACCOMPANY THE
SNOW SQUALLS, WHICH WILL RESULT IN AREAS OF BLOWING SNOW.
THE MAIN THREAT WITH THESE SNOW SQUALLS WILL BE POOR VISIBILITY IN
BLOWING SNOW AND BURSTS OF HEAVIER SNOW. SNOWFALL ACCUMULATIONS
SHOULD NOT BE OVERLY SIGNIFICANT.
CONDITIONS SHOULD IMPROVE LATER THIS AFTERNOON.
VISIBILITY WILL LIKELY BE SUDDENLY REDUCED TO NEAR ZERO AT TIMES.
PREPARE FOR QUICKLY CHANGING AND DETERIORATING TRAVEL CONDITIONS.
CONSIDER POSTPONING NON-ESSENTIAL TRAVEL AND OUTDOOR ACTIVITIES
UNTIL CONDITIONS IMPROVE.
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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