Major winter storm begins a bit later than forecast
Tuesday, December 3, 2013
Models are struggling with the exact timing of the moderate snowfall, but it still is forecast to arrive sometime this afternoon. The cold front just to our north gets pushed northward or held stationary by the southwesterly winds aloft until it regains forward progress, certainly by sunset today. Snow will become moderate to heavy then, and continue through Wednesday afternoon. I still expect accumulations likely exceeding 2 feet by sunset Wednesday on the hill, with significant accumulations in the valley as well.
Very cold air will accompany the decrease in snowfall late Wednesday as the main upper low moves overs us. Frigid Thursday temperatures will be reinforced by another wave of extremely cold air entering the area Friday. Another storm dropping south from the arctic will bring yet another wave of cold and significant snow by mid-weekend.
The cold and snow pattern looks to persist into early next week as the currently forecast last very cold wave moves overs us on Monday. This one is not as far west, and it appears that the storm cycle will end then as westerlies begin to infiltrate our area. However, the significant valley snowfall combined with low sun angle this time of year promises vigorous and long-lasting valley inversions, even as the mountain slopes begin to moderate by Wednesday or Thursday. Winter is here to stay!
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