Livingston said the fire probably was caused by a human, but noted that the investigation was not complete.
Lyle and Marylin Hileman, ages 86 and 84, didn't want to leave the home they had spent many years with their family in, the sheriff said.
Just before 11 a.m., the fire made a "significant run" toward the YMCA of the Rockies in Estes Park, officials said in a Facebookpost, coming within a mile of Bear Lake Road.
Flames jumped the Continental Divide on Thursday, forcing the closure of the 415-square-mile (1,075-square-km) Rocky Mountain National Park.
(Bethany Baker/The Coloradoan via AP) Melanie Luther embraces her two daughters Julie and Alex after reuniting with them and her husband Bryan Luther after all three were stranded in Estes Park when the city was evacuated due to the East Troublesome Fire, now the second largest in Colorado history, at The Dam Store along U.S. Highway 34 near Loveland, Colo., on Thursday, Oct. 22, 2020.
"We are hoping, fingers crossed, that we get significant snow tonight", he said.
A Colorado couple in their 80s died this week after the growing East Troublesome Fire overtook their home near Grand Lake, local officials said.
"Our parents left this world together and on their own terms". Incident Commander Noel Livingston called it a "good day for the firefighter and a good day for the community", in a Sunday morning briefing.
A bit of normalcy was expected to return to the mountains of Colorado after relatively warm, dry and windy conditions on Saturday continued to fuel the two largest wildfires in state history. The precipitation will help fire suppression efforts, said Evan Direnzo, a meteorologist with the National Weather Service in Boulder, Colorado.