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)
Freezing rain coats trees in central Ontario, 30 Dec 2019 (South Simcoe Police)
Ontario is so large and sprawling that it’s rare one storm could impact most of the province but that’s what happened Sunday into Monday.
A large low pressure system brought severe winds to the southwest, hours of freezing rain in the east and heavy snow in the northwest.
Temperatures also soared briefly in the Greater Toronto Area with a new record high of 10.2°C set at Pearson Airport.
Freezing rain duration in hours:
- Ottawa Int’l Airport – 22
- Sudbury – 20
- CFB Trenton – 18
Snowfall in cm:
- Marathon – 37
- Thunder Bay – 30
- Atikokan – 18
Maximum wind gusts in km/h:
- Chatham-Kent – 104
- Windsor – 100
- Toronto Billy Bishop Airport – 81
(Data courtesy Environment Canada)