An illegal campfire likely ignited another destructive blaze in Colorado, an outcome authorities were trying to avoid across the hot, dry US West by enforcing strict fire rules and closing some public lands.
Several people have been arrested in two Colorado wildfires that burned homes after ignoring local and federal restrictions on campfires, target shooting and other activities aimed at combating and avoiding explosive blazes across the US region.
Parts of Colorado and other Western states have been grappling with heat and severe drought. In Arizona, large swaths of national forests and state trust land have been closed since before Memorial Day, while some national forests in New Mexico are opening up after rain helped ease fire danger that kept popular trails and camping spots off limits for weeks.
A national forest in Colorado fully closed last month for the first time in 16 years to prevent new wildfires started by people. And Rocky Mountain National Park imposed a ban on all campfires starting Friday because of the risk of having a new fire start with firefighters already busy.
Investigators announced Monday that three people were arrested on suspicion of starting a campfire and leaving it unattended in Colorado's south-central mountains, sparking a blaze that destroyed at least eight homes.
More details on large wildfires across the West:
CALIFORNIA
Fires on both ends of the state eased Monday.
Crews gained some ground against flames on the California-Oregon border that killed a person and injured three firefighters. The blaze, which threatened more than 800 structures, was partially contained, but fire officials were concerned about erratic winds later Monday.
The fire has destroyed 81 structures, but officials have not determined how many are homes.
The wildfire raging through drought-stricken timber and brush has scorched 142 square kilometres and jumped into Oregon over the weekend.
In Southern California, several destructive blazes that broke out late last week during an intense heat wave have quieted down.
NEVADA
A fast-growing wildfire roaring through dry grass kept fire crews busy Monday amid heat and high wind in remote northern Nevada.
Flames the size of a four-story building torched nearly 1,619 square kilometres of cattle-grazing land and habitat for the imperiled sage grouse near the border with Oregon and Idaho, said Norm Rooker with the fire's incident management team.
Police are investigating how the fire ignited and looking for anyone camping in the sparsely populated ranching area on July 4.
The blaze has come close to at least four ranches, but crews have protected them, Rooker said.
UTAH
Wet weekend weather helped crews fighting a Utah wildfire that torched dozens of buildings and forced more than 1,000 people from their homes.
The fire in a mountain area near a popular fishing reservoir grew to about 201 square kilometres but containment also increased, authorities said Monday.
Scattered showers and relatively cooler temperatures were expected at least through Tuesday, and some evacuees have been allowed to return home.
