UPDATE (Monday, Dec. 28, 3:10 p.m. ET):TORONTO — Environment Canada has issued winter storm and freezing rain warnings for large swaths of Ontario and southern Quebec after an unseasonably warm December.
The agency says an intense low pressure system that originated in Texas is expected to roll into the Windsor area Monday afternoon, bringing freezing rain, ice pellets and strong winds before changing to rain Monday night.
The storm will hit Sault Ste. Marie hard with upwards of 35 centimetres of snow Monday night.
It says the system will move across the province where it will turn into snow in eastern Ontario and southern Quebec where it could also dump between 20 to 35 centimetres of snow by Tuesday afternoon.
Environment Canada says ice could build up on roads and walkways by as much as five centimetres in southwestern Ontario.
The agency says driving conditions will be treacherous and visibility will be near zero at times.
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UPDATE (Monday, Dec. 28, 9:10 a.m. ET): Environment Canada downgraded their storm watch for Toronto and surrounding areas Monday morning.
The special weather alert said about 5 to 10 centimetres of snow is expected, and the threshold for a storm watch is 15 centimetres.
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Environment Canada has issued a winter storm watch for Toronto and surrounding areas effective late Monday to early Tuesday.
About 10 to 15 centimetres of snow and hail is expected to fall overnight. Strong winds of about 70 km/h are also anticipated.
A low weather system from Texas will bring ice pellets and snow into southern Ontario throughout the evening before changing to freezing rain.
Drivers are cautioned to be careful on snow and ice-covered roads as visibility drops to "near zero."
By Tuesday, the freezing rain will be regular rain or drizzle. But further north, there's a chance the freezing rain may persist continue throughout the rest of the day.
Conditions will begin to improve Tuesday, according to the agency.
Keep up to date on weather conditions on Twitter with #ONstorm.
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