A Colorado fire that's been burning since mid-August flared up anew Saturday amid warm, dry weather and high winds, prompting new mandatory evacuations, authorities said.

The fire has been burning so deep into fall that it snowed more than once, halting progress temporarily but ultimately having little longterm impact, said Cass Cairns, a multi-agency spokeswoman for the incident.

A Saturday report from the National Interagency Coordination Center said, "Several communities threatened.".

The fire season in Colorado usually ends in September, Cairns said.

The National Weather Service forecast a high temperature near 70 Saturday for Loveland.

The high winds kept water- and retardant-dropping aircraft grounded Saturday, she said

The National Interagency Coordination Center said Saturday there are 29 large, "uncontained" wildfires burning in the United States