Fire officials were close to containing a wildfire on Thursday after 50 homes were evacuated southeast of Denver on Wednesday.
Evacuees were not being allowed home yet on Thursday morning, and at least two homes were still threatened.
The 800-acre wildfire quickly spread. The blaze was in rural Elbert County, some 25 miles southeast of Denver.
Local emergency officials went door-to-door, urging residents to leave.
At times the fire was doubling in size every two hours. The homes are situated on lots that are 35 to 60 acres.
Denver had 105-degree temperatures on Wednesday.
Another area of concern in the west was a 5,000-acre blaze on the Warm Springs Indian Reservation. It was not threatening homes by Thursday morning, but fire officials were concerned that it would.
There were 36 large fires burning in Alaska, Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Utah and Wyoming on Thursday, according to the National Interagency Fire Center.
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