861
WWCN11 CWTO 290942
YELLOW WATCH - SNOW SQUALL
FOR SOUTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 4:42 A.M. EST MONDAY 29 DECEMBER 2025.
---------------------------------------------------------------------
YELLOW LEVEL WATCH - SNOW SQUALL - FOR:
=NEW= SIMCOE - DELHI - NORFOLK
=NEW= DUNNVILLE - CALEDONIA - HALDIMAND
BRANTFORD - COUNTY OF BRANT
KITCHENER - CAMBRIDGE - REGION OF WATERLOO
GUELPH - ERIN - SOUTHERN WELLINGTON COUNTY.
---------------------------------------------------------------------
IMPACT LEVEL: HIGH
FORECAST CONFIDENCE: MODERATE
==DISCUSSION==
SNOW SQUALLS POSSIBLE TODAY INTO TUESDAY.
WHAT:
NEAR ZERO VISIBILITY AT TIMES IN LOCAL BLOWING SNOW.
TOTAL LOCAL SNOWFALL AMOUNTS OF 10 TO 20 CM.
WHEN:
LATE THIS MORNING OR THIS AFTERNOON AND EASING TO SCATTERED FLURRIES
TUESDAY MORNING OR AFTERNOON.
ADDITIONAL INFORMATION:
AN INITIAL BRIEF, INTENSE SNOW SQUALL IS EXPECTED LATE THIS MORNING
OR EARLY 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.
LAKE EFFECT SNOW SQUALLS OFF LAKE HURON WILL ALSO DEVELOP BEHIND THE
COLD FRONT. WIDESPREAD BLOWING SNOW AND BLIZZARD CONDITIONS WILL BE
THE PRIMARY CONCERN AS NORTHWESTERLY WIND GUSTS OF 70 TO 90 KM/H ARE
EXPECTED TODAY.
TRAVEL MAY BE EXTREMELY HAZARDOUS. ROAD CLOSURES ARE POSSIBLE.
UTILITY OUTAGES ARE POSSIBLE. CONSIDER RESCHEDULING TRAVEL AND
OUTDOOR ACTIVITIES. 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
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page