2:40 PM, Thursday, January 7, 2016
There has been spotty (mainly minor) snowfall through the Front Range region today and that will continue into the evening. More widespread snow (mainly light) is likely later tonight and early Friday. The best chance for some heavier amounts is in the Palmer Divide region south of Denver.
The storm in question should result in mainly north winds (rather than east or northeast) which reduces the chance for heavier snow in most areas except the south suburbs of Denver and the Palmer Divide. Temperatures should remain below freezing Friday, and probably Saturday and Sunday too, but with drier weather over the weekend.
Most likely accumulations:
Palmer Divide, Castle Rock, south suburbs of Denver: 3-7 inches.
Coloroado Springs, Denver, Broomfield, Boulder, Nederland: 2-4 inches
Longmont, Fort Collins, Cheyenne: less than 3 inches
Mainly light snow there too, but heavier amounts (~12″) down south in parts of the Sangre De Cristos and San Juans.
1:00 PM, Wednesday, January 6, 2015
Cloudier and colder weather will arrive by daybreak Thursday, and even colder weather should move in by daybreak Friday and last through Saturday. Areas of snow are likely Thursday. Friday morning is likely to be the period with the most widespread coverage of snow.
Snow: A large, somewhat disorganized storm makes it difficult to pin down the period with the best chances for accumulating snow.
Thursday: The Front Range region is likely to have areas of accumulating light snow by Thursday morning, but due to the lack of upslope (easterly) wind, probably not everyone will get snow. And the best chances are not necessarily in and near the foothills.
Friday: Cold northeast winds Thursday night and Friday will probably increase the chance for light snow accumulations (1-4 inches) over the whole area. There is even the chance for more moderate accumulations of at least 6 inches in some potion of the area. I will update tomorrow, but for now, expect winter travel conditions Friday morning.
Noon, Tuesday, January 5, 2015
After another relatively mild day Wednesday, colder (but not bitter cold) is expected to return Thursday through Saturday. Sometime in that period the Front Range region is likely to get some light accumulation of snow. The storm system involved is large and not well organized so it’s hard to tell when the snowiest periods would be. Much of the time is likely to be dry. Right now it looks like Friday may bring the best chance for widespread snow.
A very cold air mass is expected to move into the north-central United States this weekend. Most indications are that the coldest air will stay east of Colorado. But we can’t yet rule out a very cold spell late in the weekend or early next week.