The fire, which is in the Fremont-Winema National Forest in the southwest of the state, broke out July 6 and “continues to burn actively,” according to Sunday’s update.
The cause of the fire is unknown.
According to a news release issued Saturday evening, conditions “were so extreme that firefighters needed to disengage and move to predetermined safety zones.”
Oregon is currently experiencing drought conditions, according to CNN Weather, as the western US bakes under an excessive heat wave.
“Hot/dry weather and extremely dry fuels contribute to extreme fire behavior,” Sunday’s update said.
Fire officials said earlier that more personnel were being assigned to nighttime hours, when the conditions are “more favorable in effective firefighting.”