For much of the day Monday, Waterloo Region was under an Environment Canada blizzard warning for only the second time since 1993.
The warning was downgraded to a snow squall warning for Waterloo and Guelph by 3:30 p.m. – but in Huron-Perth, Grey-Bruce and the northern part of Wellington County, the blizzard warning remains in place as of 7:30 p.m.
The blizzard warning also covers areas around Barrie, Midland, Bracebridge and Gravenhurst.
In all affected areas, Environment Canada is calling for a sharp drop in temperatures and frequent snow squalls, with snowfall amount of 15 to 30 cm likely by Tuesday morning.
Conditions are expected to improve somewhat on Tuesday, although snow squalls, blowing snow and frigid temperatures are expected.
For Waterloo Region, the Guelph area, Norfolk-Haldimand and other parts of the province under snow squall warnings, between 10 and 15 cm of snow is expected overnight, with another 10 cm falling Tuesday.
All of southern Ontario remains under a wind chill warning as of 7:30 p.m.
Environment Canada predicts bitter winds will produce wind chills between -30 and -35 starting Monday evening, falling as low as -40 overnight.
Ontarians are advised to leave the lowest tap in their house running in a fast drip or pencil-thin stream overnight to help prevent pipes from freezing.
