Tuesday, April 09, 2013

Powerful winter storm developing - snow for Montreal?

Traffic camera near Riverton, Wyoming this afternoon showing heavy snow.
A very intense low pressure area fueled by warm air from the Gulf of Mexico and unseasonably cold air from the Prairies will take shape over Colorado today. This storm created some wild temperature swings on Monday over the high plains with 80's in New Mexico and 20's in Wyoming with heavy snow. Denver dropped from 72F at 3pm Monday down to 41F in less than two hours with blowing dust and a thunderstorm. Snow spread into Denver after midnight, just an incredible swing in temperatures as they sit at 16F this morning with windchill readings near 1F (-17C). At the same time last night large thunderstorms were occurring across eastern Colorado and into Kansas with hail and several tornadoes.

This storm will continue to gain strength as it moves across the Midwest and into the Great Lakes by Thursday. It will then slide east across New England on Friday. At this time a swath of heavy snow is expected across the Dakotas and into Minnesota and Wisconsin with easily over 1 foot. The snow may affect portions of Ontario and Quebec by late in the week. This storm will be a news maker with travel disruptions and power outages expected along its path. Heavy rain and severe weather with some tornadoes will occur along and to the south of the trajectory. Depending on the track of the storm, Montreal may see a messy mix of snow and cold rain on Friday along with strong winds.

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