The series of fires that sparked near Chatfield State Park in Douglas County were 90% contained Sunday night, and all evacuations were lifted, according to South Metro Fire Rescue.
Roughly 130 acres were burned by multiple fires along a 3-mile stretch of U.S. 85 from Titan Road to Kelly Court, fire officials said.
That includes 20 acres inside the state park.
The fire, named the Airport fire by South Metro, saw minimal growth overnight as crews worked to douse hotspots and protect the containment lines, the agency said in a Monday update. Overnight rain helped put out many remaining flames.
The cause of the fire remains under investigation, but South Metro Fire Rescue spokesperson Brian Willie said Sunday that the first flames were reported near train tracks, and a train was confirmed in the area.
South Metro crews responded to reports of multiple vegetation fires in the 9800 block of Titan Court just after 2 p.m. Sunday, according to the agency.
The grass fires were quickly upgraded to second-alarm wildland-urban interface fires as they spread across open space and threatened structures, South Metro officials said.
“Wildland-urban interface” refers to the area where human development meets natural terrain and flammable vegetation, according to the Colorado State Forest Service.
Videos posted by South Metro Fire Rescue on Sunday showed flames swirling in funnels, a wall of smoke and helicopters dumping water on the fire.
Fire crews were also using bulldozers on the ground to create containment lines, fire officials said.
This is a developing story and may be updated.
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