759
WWCN11 CWTO 290944
YELLOW WATCH - SNOW SQUALL
FOR SOUTHERN ONTARIO
ISSUED BY ENVIRONMENT CANADA
AT 4:44 A.M. EST MONDAY 29 DECEMBER 2025.
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YELLOW LEVEL WATCH - SNOW SQUALL - FOR:
=NEW= PICKERING - OSHAWA - SOUTHERN DURHAM REGION.
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IMPACT LEVEL: MODERATE
FORECAST CONFIDENCE: HIGH
==DISCUSSION==
SNOW SQUALLS POSSIBLE THIS AFTERNOON INTO TUESDAY.
WHAT:
NEAR ZERO VISIBILITY AT TIMES IN LOCAL BLOWING SNOW.
TOTAL LOCAL SNOWFALL AMOUNTS OF 10 TO 20 CM.
WHEN:
THIS AFTERNOON EASING TO SCATTERED FLURRIES TUESDAY AFTERNOON.
ADDITIONAL INFORMATION:
AN INITIAL BRIEF, INTENSE SNOW SQUALL IS EXPECTED THIS AFTERNOON
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.
A COLDER AIR MASS IN THE WAKE OF A DEPARTING LOW PRESSURE SYSTEM
WILL RESULT IN THE DEVELOPMENT OF LAKE EFFECT SNOW SQUALLS OFF
GEORGIAN BAY. BLOWING SNOW AND POOR VISIBILITY WILL BE THE PRIMARY
CONCERN AS STRONG NORTHWESTERLY WIND GUSTS ARE EXPECTED.
TRAVEL MAY BE HAZARDOUS. VISIBILITY MAY BE SUDDENLY REDUCED TO NEAR
ZERO AT TIMES. PREPARE FOR THE POSSIBILITY OF QUICKLY CHANGING AND
DETERIORATING 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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