Via the Denver Post:

Air support arrived Wednesday afternoon to help fight a new wildfire burning in southern Jefferson County and evacuations have been ordered for residents.

Residents in the area of the Chair Rock fire, located south of Conifer and east of Bailey, are reporting heavy smoke in the area, according to the Jefferson County Sheriff’s Office. Air support is already making water drops on the fire.

Mandatory evacuations were ordered shortly before 2 p.m. for a three-mile radius around the intersection of South Foxton Road and West Platte River Road. Residents in the area are being told to leave immediately.

The Jefferson County Sheriff’s Office is tweeting news and safety tips:

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Twitchy will monitor the story and will update this post as new developments occur.

Editor’s note: This post has been updated with additional tweets.