Daryl Ritchison, WDAY, Published December 15 2012
Weather Talk: Snow pack likely to alter potential for warm tempsThe snow cover that now dominates the region has altered our temperature potential for the foreseeable future. Recent storms may not have dropped huge amounts of snow locally, but south of here it is more substantial.
That means any warmer flow of air from the south has to travel over a deep snow pack before it arrives locally. That deep snow cover could be thought of as a refrigerator: Any air mass passing over the snow will be cooled, sometimes significantly, as it moves northward, greatly limiting any warming to this area.
Plus, the snow pack to our north has been present for many weeks now, and temperatures have already reached minus 40 degrees as close to us as central Manitoba.
This certainly does not mean this winter will be horribly cold; it only increases the odds of the next few months not being well above average like they were last year.
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