The I-25 corridor can expect mild temperatures Thursday. But by Friday afternoon, the cold front will roll in, delivering snow and subzero temperatures.

An arctic front will sweep through Colorado Friday afternoon with dangerously cold air and accumulating snow lagging behind it.

The coldest temps in about a year are taking aim at Colorado as a major blast of Arctic air will plunge Denver below freezing, remaining there for several days as flash freezing becomes a concern. Here's a look at potentially dangerous wind chills expected in Colorado and the Denver metro area.