12:00 noon, Friday, November 13, 2015
After a mild and dry weekend, forces are shaping up for a change to more wintry weather late Monday, and possibly a major winter storm Monday evening through Tuesday from Colorado Springs north to Cheyenne.
Chances are increasing that a strong storm system will move into the four corners region Monday night and then into the high plains Tuesday. This can be a favorable setup for Front Range snowstorms. As of today, the European and Canadian forecast models move the storm steadily through and keep the snow focused mainly on Monday night and early Tuesday with modest amounts for the urban corridor (6 inches or so). The U.S. GFS model has a large and more slowly evolving storm across southern Colorado and would result in a more prolonged period of snow with high-impact heavy accumulations (well over a foot) Monday evening into Wednesday.
Specific track and evolution details of the storm are still in question, and I will have updates later in the weekend.