Denver could see up to two feet of snow, while areas north could see four feet. Gov. Jared Polis has activated the Colorado National Guard.
Her birth represents the first cloning of an endangered species native to North America, and may bring needed genetic diversity to the species.
Richard and Mayumi Heene were accused of concocting a hoax after their 6-year-old son was feared to have floated away in a balloon in 2009. The boy was found safe at home.