Monday, December 18, 2017
Unsettled holiday forecast for southern Quebec
Freezing Rain Possible
A warm front is expected to lift north into our region Monday, with light snow and some freezing rain possible into Tuesday. Accumulations will be light with up to 5cm of snow and perhaps a few millimetres of ice here in Montreal. Eventually the warm air will win out on Tuesday, with the mercury edging above the freezing point to 3C (38F). This warmth will be short-lived, with a sharp cold front arriving on Tuesday night. Temperatures will drop into the lower minus teens by Thursday morning, and remain there into Friday. On Friday, the weather will become quite active once again, with a strong storm developing in western Canada and moving towards Colorado, before moving across the Great Lakes. Several scenarios are in play here, with the exact storm track determining the type and quantity of precipitation. This will not be an easy forecast, but right now we are looking at snow Friday, changing to freezing rain late in the day and perhaps to rain Saturday. The entire mess will freeze up on Christmas Eve day as the arctic air surges back into southern Quebec. To say the least, this type of weather will greatly impact travel across Ontario, Quebec and New England. If you have any travel plans, pay close attention to future forecasts and any warnings as the week progresses.