Ontario minus 30 deg C and 30 cm of snow.
Expect significant travel disruptions in southern Ontario Sunday as significant winter storm threatens 20-30 cm of snow
A significant winter storm moves in Sunday-Monday, with cold Arctic air producing fluffy, fast-accumulating snowfall
GTA and Golden Horseshoe: Widespread 20–30+ cm, with peak snowfall Sunday evening and major impacts along the QEW, 401, 404, and 407 highways
Lake-enhanced snow is a key wild card: An easterly flow off Lake Ontario could focus a heavy band from Hamilton to Pickering, creating whiteouts and boosting totals
Wind gusts near 60 km/h will cause blowing snow and reduced visibility, especially in open areas and along the Lake Ontario shoreline
Eastern Ontario sees 10–25 cm (Ottawa 10–15 cm), with travel disruptions continuing into early Monday
Road and school closures are possible Monday, depending on cleanup
Environment Canada