PRINEVILLE, Ore. – Smoke from surging activity on the nearly 7,400-acre Austin Fire in Clackamas County moved into the Prineville and Madras areas Tuesday evening, prompting the Crook County Sheriff’s Office to reassure there were no new fires in the area.

The sheriff’s office said in a Facebook post that it had “received multiple inquiries about the smoke that is filtering into Crook County.”

They said the smoke was from the Austin fire burning northwest of the region.

“At this time, there are no new fires burning in Crook County,” they said.

While the Oregon Department of Environmental Quality’s Air Quality Index showed much of Central Oregon in the “good” category Tuesday night, Prineville and Madras were in the “unhealthy” category, and Redmond became "unhealthy for sensitive groups."

The Austin Fire, at 0% containment, has prompted Level 1 and 3 evacuations in the area west of the Confederated Tribes of Warm Springs Reservation.

Late Tuesday, the Mt. Hood National Forest issued an emergency closure on Forest Road 57 “for public safety due to increased activity on the Austin Fire,” urging people to “please avoid the area.”