The Oil Springs Fire which started Friday grew, by thousands of acres overnight despite firefighting efforts, the Rio Blanco County Sheriff’s Office said.

As of 2 a.m. Monday, the fire had burned 5,000 acres — up from only 500 acres Sunday afternoon and 20 acres Saturday morning. The fire is at 0% containment, deputies said.

Officials said the fire was started Friday afternoon by a lightning strike. The fire is burning in northwest Colorado in a remote area near Texas Mountain off Highway 139, approximately 20 miles south of Rangely.

“The fire had significant growth … having multiple spot fires and crossing Highway 139,” the sheriff’s office said in a release. “Firefighters are still witnessing active fire behavior due to dry conditions, receptive fuels and wind.”

Multiple agencies are working to fight the fire, deputies said; however, firefighters have not reached any containment. On Sunday afternoon, firefighters said the trucks could not reach the blaze because of the rugged terrain of the area.

No property or structures have been damaged by the fire, deputies said.

As of 10 a.m. Monday, evacuation orders are in place for County Roads 116, 27, 28, 120, 26A, 103 and 128. Road closures are in effect for Highway 139, County Road 122 at mile marker 10 and the intersection of County Road 23 and County Road 113.

Smoke from the fire is visible from Highway 139, Highway 64, Rangely, Meeker and all surrounding areas, deputies said.

A red flag warning and Stage 1 fire restrictions are in effect for Rio Blanco County from noon to 9 p.m. Monday and Tuesday as the county experiences strong winds, low humidity and dry fuels under exceptional drought conditions.

“Wildfire behavior is largely contingent upon weather and fuel conditions, the potential for fire activity remains high,” the sheriff’s office said.