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    Brett Anderson

    New Snow Maps then a Late-Week Snowstorm

    11/07/2012, 5:05:31 AM

    Northeast coastal storm

    The coastal storm for the Northeast U.S. and the Maritimes will not be quite as intense as earlier forecasts had it, which is good news, but we still expect to see some coastal flooding and additional beach erosion Wednesday into Thursday along the coast, especially on east- and northeast-facing beaches due to the north to northeast wind.

    There will be a narrow band of accumulating snow with this storm, but with the changing track, we have had to make some adjustments to the snow map. Again, this will not be a major snow event for New England and up into eastern Quebec and northwestern New Brunswick since the storm will be peaking too early then drier air will be getting mixed into the circulation by Thursday, reducing the snowfall rates.

    At this point, it looks like the accumulating snow misses Montreal. I can see a slushy coating to 4 cm in Quebec City, while the higher elevations of southeastern Quebec then up into northwestern New Brunswick get anywhere from 6 to 10 cm of wet snow.



    Band of accumulating snow for parts of western Canada tonight through Wednesday evening.....

    A storm will track eastward across western Canada through Wednesday, spreading a band of accumulating snow from the mountains of BC through central Alberta, central Saskatchewan and eventually parts of Manitoba.

    Looks like the track will be too far north to bring accumulating snow to Calgary, but I do expect some accumulation (2-8 cm) in Edmonton, Alberta.


    ------------ Late-week snowstorm potential for the southern and eastern Prairies......

    A significant snowstorm will likely track from the U.S. Rockies to Manitoba late this week, and the result could be a large area of accumulating snow and strong winds from southern Alberta to Manitoba.

    The storm will be a cold one with the potential for significant drifting.

    The storm itself will likely reach its peak intensity Saturday night as it turns northeastward into Canada, resulting in strong winds and heavier snow over parts of Manitoba.

    Right now, it appears that the track of the storm will be too close to bring significant snow to Winnipeg as milder air results in some rain. The best snow will likely be farther north and west.


    One final note.... establishing a widespread snow cover over the Prairies early in the season is a key player to sustaining the strength of Arctic air masses that charge south and east toward the rest of Canada and the U.S.

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


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