The largest of several wildfires in northwestern Colorado grew to over 100,000 acres overnight, prompting new evacuations. Fire crews have made some gains in containing the fire, however, going from 0% to 6% containment.

One of the fires burning now more than 100,000 acres in Rio Blanco County in northwest Colorado continues to grow during ongoing "near-critical fire weather" conditions.

The fire — called the Twelve fire on the Bureau of Land Management’s fire dashboard — burned across 1,000 acres over the course of five hours Wednesday after sparking in Moffat County near Elk Springs, about 50 miles west of Craig, according to federal officials.