The two fires, about 250 miles (400 km) apart in the drought-parched Four Corners region of the Southwestern United States, have consumed nearly 32,000 acres (12,000 hectares) between them, officials said.
The larger of the two, the so-called Ute Park Fire in Colfax County, New Mexico, was zero percent contained after scorching some 30,000 acres by Saturday evening near Cimarron, a town of about 1,100 people northeast of Santa Fe, according to a bulletin on the New Mexico Fire Information website.
About 300 structures were threatened in Cimarron, where officials issued a mandatory evacuation on Friday. The town lies just northeast of the Santa Fe National Forest, which was indefinitely closed to the public on Friday in a rare measure prompted by the heightened fire risk from prolonged drought.
About a dozen outbuildings went up in flames on an adjacent ranch, fire officials said. But showers were expected to bring some relief to firefighters on Sunday, though lightning strikes and erratic winds from thunderstorms could also worsen the situation.
“The Village of Cimarron is STILL safe,” village councillor Laura Gonzales said on Facebook. “Continue to pray for our community.”
The cause of the fire, which began on Thursday and has been burning through grassland and pine forest, is not known.
A second wildfire started on Friday about 10 miles north of Durango, Colorado, raging across nearly 2,000 acres and forcing the evacuation of about 1,500 people near the southern border of the San Juan National Forest, the U.S. Forest Service said.
Officials of La Plata County, Colorado, said they opened evacuation centers after ordering residents out of about 825 homes and issuing pre-evacuation notices for residents of another 760 homes.
The Forest Service said the intensity of the Colorado wildfire, known as the 416 Fire, had slightly diminished by Saturday morning and that firefighters were focused on protecting neighbourhoods and infrastructure as they managed to carve containment lines around 10 percent of the blaze.