The Platte River Fire, which broke out Thursday afternoon in Jefferson County, had grown to 30 acres with no containment by the evening, according to the Jefferson County Sheriff's Office.

The sheriff's office has asked evacuees to check in at Conifer High School.  It said 25 homes have been contacted and about two square miles have been evacuated.

The fire broke out Thursday afternoon and was burning in the Dome Rock/Ramona Gulch area, according to Twitter, around the 17000 block area of West Platte River Road, near Foxton and Buffalo Creek. Jeffcom 911 tweeted residents around Dome Rock were being evacuated.

A downed power line may have started the fire, according to the sheriff's office. North Fork Fire and Elk Creek Fire are contributing to containment efforts.

The United States Forest Service tweeted it has dispatched a Type 2 helicopter, two Airtankers and an Air Attack to help with suppression efforts on the ground.

Temperatures have been in the 90s all week in the metro area. Although a slight cooling trend is expected on Friday, the hot, dry weather is expected to continued throughout the next week.

Further west, the Colorado State Patrol reported before 8 p.m. that eastbound Interstate 70 was closed at Silverthorne because of a new wildfire just south of the interstate west of the Eisenhower Tunnel. The fire is being referred to as the Straight Creek fire. Eastbound I-70 opened late Thursday night.