A high-impact ice storm will carry over into Sunday afterwards hours of ice accretion left over 370,000 customers without power across Ontario by early Sunday afternoon.
Anticipate ongoing power disruptions throughout the rest of the weekend, coupled with hazardous roadways in areas affected by freezing rain and significant snow accumulation.
Remain at home when freezing rain occurs. Make certain to verify highway conditions and local weather alerts Before leaving, if needed.
PHOTOS: Damages and disruptions reported as an ice storm strikes Ontario
The municipalities of Orillia and Peterborough each announced a state of emergency. state of emergency On Sunday morning, the city faced extensive power failures, fallen trees, and hazardous driving conditions throughout urban areas because of the ice storm.
Local authorities are encouraging citizens to remain at home and refrain from traveling On the roadways, teams are working to reinstate electricity and clear debris. Additionally, they are advising for limited water usage to avoid overloading sewage systems.
WATCH: Be cautious of falling branches and risks from downed power lines as ice remains
The second phase of icy conditions persists through Sunday.
A significant amount of freezing rain blanketed cottage country and eastern Ontario on Saturday, accompanied by heavy snowfall in the northeast regions of Ontario and beyond. Ottawa Valley.
On Saturday evening, precipitation increased again following a calm period during the daytime hours, resulting in further ice accumulation across numerous regions that had already experienced significant icing.
Meteorologists anticipate a slight accumulation of ice affecting parts of the Greater Area. Toronto In the GTA, as temperatures drop near the freezing point through Saturday night into Sunday morning, the area might experience 2-5 mm of ice accumulation. This isn’t a significant event, yet it should be sufficient to render outdoor surfaces slippery.
Higher amounts are anticipated just north of the GTA. People in areas like Orangeville and Dundalk should be prepared. Barrie , and Orillia It's possible we could see an extra 15-20 millimeters of ice accumulation on Sunday. This is added to what has already been observed. More power disruptions are expected.
DON'T MISS: Sleet and freezing rain pose significant dangers during the colder months.
Extensive icing accumulations of 10-15 mm are anticipated across most of the cottage region and eastern Ontario, with approximately 10 mm of ice predicted atop the snowfall that hit Ottawa and nearby areas.
Across southern Ontario, temperatures will slowly increase throughout Sunday, causing the precipitation to shift to regular rain and prompting the ice covering trees and power lines to start thawing. This warming trend will result in a severe thunderstorm threat through southwestern Ontario by Sunday night.
The severe winter storm isn’t only affecting southern Ontario; areas north of Lake Huron are also grappling with substantial quantities of ice and snow as a system originating from Colorado progresses through the area.
Sault Ste. Marie and Timmins You can expect 20-30 cm of snow from now until Monday, with certain rural regions possibly accumulating up to 50 cm. There's a strong chance that significant snowfall could lead to closures of Highways 11 and 17 near Lake Superior and in the vicinity of Timmins over Sunday evening into Monday.
Directly to the south of that area with significant snowfall, an accumulation of 30-40 mm of ice due to freezing rain might lead to extremely difficult traveling conditions along the Trans-Canada highway between Sault Ste. Marie and the mentioned location. Sudbury .
Above, temperatures might climb into the teens overnight on Sunday and early Monday before a powerful cold front moves through, ushering in significantly cooler conditions as we kick off April.
Follow The Weather Network for updates on the current weather conditions throughout Ontario.
A thumbnail photo captured in Barrie, Ontario, on March 30, 2025, by Mark Robinson/TWN.
