The calm before the storm: Lake Champlain looking west at the snowy Adirondack Mountains of NY earlier today. Photo SBLow pressure moving south of the Great Lakes this evening will slide across New York state while a second area of low pressure begins to develop along the Atlantic Seaboard. The combination of the two systems will provide our regions with steady snow from tonight into Monday morning. At present most of eastern Ontario and the St. Lawrence Valley including Kemptville can expect 5-10cm of snow with gusty winds primarily from storm number 1. The snow is near Kingston as of 6:30pm.
The forecast for southern Quebec is a little more tricky as low number 2 becomes the dominant system. It will rapidly intensify as it moves northeast towards Maine. Heavy snow along the western edge of the system could reach Montreal and increase totals here to well over 10cm by Monday. Meanwhile Vermont and eastern New York are under Winter Storm Warnings and they are expecting totals well in excess of 25cm. Some areas of the eastern Green Mountains may see close to 40cm by the time the system moves east.
Warnings may be required for southern Quebec. I will post an update on this storm early Sunday morning. Any travel along the 416/401/20 or Interstates south into the US tomorrow should be reconsidered if possible.
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