Markham, ON - The computer models are now agreeing that the Alberta Clipper will intensify, and its storm centre will mainly stay in the United States, around the southern shores of Lake Erie, gradually making its way up southern shores of Lake Ontario before exiting to the Atlantic Ocean. This means that the Canadian side of the border will see more snow than ever forecasted before.

At 5:53 PM EST, the mix precipitation zone of this storm had entered the Canadian side of the border. The zone is just now covering the southern parts of Muskoka District and northern parts of Simcoe County. With the current dropping rate of the temperature in Markham, Markham could see the mix precipitation starting around at 8 to 11 PM EST depending on the upper air temperature.

Environment Canada had just issued a Heavy Snowfall Warning to the GTA, Barrie, Belleville, Kingston, Ottawa, Gatineau, Montréal, Kitchener-Waterloo, Stratford, and other surrounding area. The officials suggest a snowfall amount of 10-20 cm. For the GTA, 5-10 cm will fall tonight, and about an additional 5-10 cm will fall tomorrow morning. It is worthwhile to note that after this storm moves out, the cold air spills in, and the lake effect machine will turn on again. Additional 5 to 15 cm could fall to the leeward side of the lakes.

Leading weather authorities' snowfall forecast for the GTA:
Environment Canada - 10 to 20 cm
The Weather Network - 20 to 30 cm ; 2-4 mm of rain
The Weather Channel - 2 to 4 cm
Accuweather - 5 to 12 cm
Markham Weather Centre (Operated by Nicholas) - 10 to 15 cm

Looks like we've got a variety here, let see how I think this will develop:



Want me to decipher the image? Here you go:

Ontario

Essex County (Windsor; La Salle; Tecumseh) - Trace to 3 cm (Mainly rain)
Lambton County; Chatham-Kent - 1 to 7 cm (Lake effect plays a major role)
Grey County; Bruce County (Owen Sound; Goderich; Tobermory; Kincardine) - 5 to 20 cm (Lake effect)
Perth County; Huron County (Stratford) - 6 to 12 cm (Lake Effect)
Waterloo Region (Kitchener; Cambridge) - 5 to 15 cm
Middlesex County; London - 5 to 15 cm (Lake Effect)
Brant County; Oxford County (Brantford) - 10 to 20 cm
Hamilton (Stoney Creek; Dundas; Ancaster) - 1 to 5 cm
Niagara Region; Haldimand County; Norfolk County (St. Catharines; Niagara Falls) - LOW ELEVATION: 1 to 3 cm; HIGH ELEVATION: 3 to 10 cm
Halton Region; Peel Region (Burlington; Mississauga) - 5 to 12 cm
Toronto (North York; Etobicoke; Scarborough) - 4 to 15 cm
York Region (Markham; Vaughan; Newmarket) - 10 to 30 cm
Simcoe County (Barrie; Collingwood; Midland) - 5 to 25 cm
Muskoka (Huntsville; Gravenhurst) - 3 to 8 cm
Sudbury (Chelmsford; Nickel Centre) - 2 to 4 cm
North Bay - 2 to 5 cm
Durham Region; Northumberland, Prince Edward, Hastings Counties (Belleville; Oshawa) - 8 to 25 cm
Frontenac, Stormont-Dundas-Glengarry Counties (Brockville; Kingston; Cornwall) - 8 to 25 cm
Ottawa (Kanata; Nepean; Gluocester) - 12 to 20 cm
Renfrew County; Haliburton - 5 to 12 cm

Québec

Vaudreil - Dorion - 10 to 20 cm
Mont Tremblant - 5 to 15 cm
Gatineau (Hull; Chelsea) - 12 to 20 cm
Montréal - 8 to 20 cm
Terrebonne - 10 to 20 cm
Laval - 6 to 16 cm
Trois-Rivières (Cap-de-la-Magdaleine) - 10 to 18 cm
Shawanigan - 6 to 14 cm
Sherbrooke; Drummondville - 2 to 10 cm (More rain)
La Ville de Québec (Lévis; Ste-Foy) - 10 to 20 cm
Rimouski - 12 to 18 cm
Gaspé Penisula - 5 to 22 cm
Sept-Iles - 1 to 4 cm

New Brunswick

Bathurst; Campbellton - Trace to 5 cm
Fredericton - Trace to 1 cm

*NEW! Markham had started mix precipitation at around 8:35 PM EST, while started wet snowing at around 8:45 PM EST. We expect the same to happen in Toronto around 9 to 10 PM EST.

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