A Winter Storm Warning is in effect this morning for all of southern Quebec and northern New York and Vermont. Winter Weather Advisories are now in effect for the St. Lawrence Valley of New York with a Winter Storm Watch for eastern and southern Ontario including Toronto, Kingston, Cornwall and the 401 corridor as well as the regions north and east of Montreal.
We begin this morning with clear and cold weather across the region. Temperatures are very close to -18C in rural areas and around -14C in metro Montreal. It will be sunny this morning, with increasing clouds this afternoon as a trough of low pressure bring a few flurries to the area. The main event will begin overnight in southern Ontario and spread north and east rapidly on Friday. Low pressure is organizing along the Gulf Coast and will begin to rapidly lift into the Ohio Valley. It will pass across New York State on Friday. Snow will become heavy on Friday and accumulate a general 15-25cm (6-10") across all our regions. The trend with this storm has been further north over the last several hours therefor confidence is growing in this forecast. Another big element of this storm, especially here in southern Quebec along the south shore to the US border and along the 401 will be the wind. It will gust up to 80km/h on Friday, capable of producing near zero visibility especially off island. This will be a significant weather event and cancellations will be possible. Adjust your travel plans for Friday if you can. Skies will clear Saturday before the next storm on Monday.
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