Wednesday, November 18, 2015

Arctic air blasts Prairies

The webcam at the University of Saskatchewan in Saskatoon shows a coating of snow on the ground this morning. Cold air, strong winds and blowing snow are sweeping across the province today.
The coldest air of the season is moving across western Canada this morning. Temperatures have fallen into the minus teens across the northern Prairies and are spreading south and east. Along with the cold air is a blast of wind that has prompted wind warnings across many areas of Saskatchewan, Alberta and BC. Wind speeds are forecast in excess of 100km/h in many locations. Over 40,000 customers in B.C. alone have lost power. A burst of moderate snow has developed along the front in Saskatchewan and is spreading into Manitoba this morning with icy roads and lowering visibility. An example of the potent cold front is in Regina, Saskatchewan where the current temperature is 4C (39F). Winds are picking up and rain, will change to snow with the mercury plummeting to -6C (21F) by this afternoon. The cold air, wind and snow will spread into Manitoba this evening.

Tornado Outbreak
Meanwhile a potent fall storm lifting north towards the Great Lakes, produced heavy snow west of the system and strong thunderstorms east of the track on Tuesday. One of the largest November tornado outbreaks on record occurred late Monday night across portions of Texas, Oklahoma and Kansas. Over 40 tornadoes were observed with serious damage reported. In Denver, blizzard conditions cancelled flights and closed highways on Tuesday.

Snow for Quebec?
In Montreal, high pressure has been in control of our weather this week. We have been enjoying cool nights and seasonable days. One more day of sunshine is expected today, before clouds increase on gusty southerly winds tonight. Temperatures will moderate up to 11C (52F) today and Thursday, along with rain developing by late Thursday. Clouds and showers will hold on into Friday. Cooler temperatures will return along with gusty winds as a cold front moves into the St. Lawrence Valley. Temperatures will drop to the freezing point by late Saturday, with a chance for some snow showers late in the day and early Sunday morning. Some locations in southern Quebec and New England may see a coating of snow on the ground by Sunday.

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