Wednesday, December 14, 2011

Rain and maybe snow

It is mild once again this morning in Montreal with a 7am reading of 1C. We have had scattered snow showers and drizzle over the last 24 hours thanks to a weak cold front in the area. It has been generally dull and uninspiring for mid-December. Today we will see a brief break in the precipitation as weak high pressure noses into southern Quebec. We may see a break or two, but it will be mostly cloudy and damp with temperatures no better than 1 or 2C. Our next weather system is a low pressure near Colorado that will sweep across the Great Lakes and move west of Montreal placing us in the warm sector once again. As the warm front approaches the region overnight, some cold air at the surface will allow for mixed precipitation at the onset. Keep this in mind if your travels take you north of Montreal or east, as freezing rain warnings are in effect for those areas. Elsewhere a brief period of snow will change over to rain overnight and continue on Thursday with temperatures very warm, up to 9C (48F).

A cold front will cross the area late Thursday with any leftover precipitation tapering off to flurries by Friday morning as temperatures lower back to the freezing point. Our next chance for any appreciable snow will come Sunday and again by next Tuesday. Scenario one looks like only a centimetre or two for Sunday, but the second system early next week needs to be watched closely as it moves across the Ohio Valley and close to our region.

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