The Treadway fire was the result of two blazes merging on Sunday. The fires broke out Saturday about 29 miles north of Safford and within two miles of each other. The Arizona Forestry and Fire Department said it poses no threat to infrastructure, buildings or cultural values.

“Dry lightning and unstable winds associated with monsoon storms have caused very intense fire activity over the past 48 hours, complicating firefighting efforts,” the ministry said in a Monday afternoon news release.

The blaze continued northeast through Sunday afternoon, reaching the San Carlos Reservation and reaching flat land, where Hot Shots conducted burnout operations during the night, and blazed again on Monday, according to the state fire department. said.

However, “unstable winds caused the fire to spread to the northwest toward Slaughter Mountain. The terrain on that side was more rugged, and the crew had to wait for the fire to extinguish and fall to level ground before it could be safely engaged.” We have to wait, the aircraft will be used.” Help slow the progress of the fire on its northwest flank until crews can safely begin containment operations if necessary Tuesday. ”

An air raid was requested on Tuesday, 1 August.