Low temperatures Friday night and into Saturday morning are expected to drop into the -20s across areas south and west of Toronto. Regions to the north and northeast of Toronto will see even colder conditions, with temperatures plunging into the -30s. Some locations could approach -40, creating frigid and dangerous conditions.
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Snowfall could begin as early as Saturday night and continue through the day Sunday, potentially persisting into Monday morning.
We could see lake-enhanced snowsqualls develop off Lake Ontario overnight Saturday into Sunday morning before the main storm arrives.
Depending on how the winds align over Lake Ontario, these snowsqualls could target Toronto and surrounding areas for several hours before the main event.
A widespread swath of 10-20+ cm of snow isn’t out of the question for many areas that just received 20-40 cm of snow about a week ago. This will include much of the Golden Horseshoe, QEW, 401, 404, and 407 series highways.
Underneath the snow bands will bring the heaviest impact, with 25-30+ cm possible and complete whiteouts in affected areas.
