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Snow for the Lower Mainland of BC late Thursday and Thursday night

November 01, 2017; 1:46 PM

A fresh surge of Arctic air will collide with a developing storm just off the west coast resulting in a period of snow for the Lower Mainland of BC and even portions of Vancouver Island late Thursday through Thursday night before drier air cuts the precipitation off on Friday.

The map below is for the day Thursday. The rain-snow line will likely reach the coast Thursday night.

Clearly at this time of year, the key to the amount of snowfall will be elevation. However, I still believe there will be some snow in the air all the way to the coast Thursday night.

Here is a breakdown by certain locations of what I expect in terms of snowfall.......

Vancouver, BC: trace to a cm of wet snow Thursday evening/night. Roads just wet.

Abbotsford, BC: 2-5 cm of snow Thursday evening and night.

Whistler, BC: 8-15 cm of snow Wednesday night into Thursday night.

Victoria, BC: a trace of wet snow Thursday eve/night. Roads just wet.

Nanaimo, BC: 2-6 cm of snow Thursday and Thursday eve.

Higher elevations of central Vancouver Island: 8-15 cm of snow Thursday/Thursday night

Higher elevations surrounding Vancouver metro area: 10-15 cm of snow late Wednesday night into Thursday night.

Kamloops, BC: 5-10 cm of snow Thur/Thur. night.

Kelowna, BC: 7-14 cm of snow Wed night/Thur/Thur. eve.

A period of drier, but still cold weather will take hold Friday into at least Monday across BC.

Farther east, a prolonged upslope wind flow will produce an extended period of light to moderate snow across the southwestern third of Alberta tonight through Friday. Snow will spread eastward through the Prairie into the first half of the weekend as low pressure forms over the northern High Plains of the U.S......Totals are for the entire period.

Calgary, AB: 5-10 cm

Waterton Park, AB: an additional 12-25 cm

Lethbridge, AB: 6-12 cm

Regina, Sask.: 5-8 cm Friday night into Saturday

Winnipeg, Man.: 6-10 cm Saturday/Saturday night.


Cold pattern across western Canada for the first two weeks of the month

A strong ridge of high pressure in the upper atmosphere will position itself near Alaska through early November. The clockwise flow around this high will continue to deliver shots of cold air down into the western third of Canada into the second week of November.

As the high begins to retrograde westward next week, it may open the door to more precipitation over extreme southern BC later next week, but temperatures will remain below normal.

This increasing Pacific flow of air will likely lead to a generally milder pattern across the lower 48 states and southeastern Canada for the first two weeks of November. However, there still may be a few sneaky fronts that deliver a quick shot of colder air into the east during the period.

You can also follow me for quick weather updates via my twitter

The views expressed are those of the author and not necessarily those of AccuWeather, Inc. or AccuWeather.com

More Brett Anderson


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