A Colorado Low tracked across Lake Huron on Saturday and brought snow to nearly all of Ontario and Southern Quebec with the first major amounts this winter.
Strong gusty winds up to 100 km/h in some areas also created blowing snow.
The low pressure system continued through the Northeastern United States and impacted the Maritimes on Sunday.
Snowfall amounts (in cm):
- Marathon 30
- Thunder Bay 21
- Ottawa 20 (new daily record for 18 January)
- Kitchener-Waterloo 19
- Toronto Pearson Airport 17.2 (new daily record for 18 January)
- Montreal 17
- London 16
- Kenora 15
(Data courtesy Environment Canada and volunteer observations)