Fire managers announced Wednesday that the Pocket Fire north of Sedona has surpassed 18,000 acres — but is now 20% contained.

The Coconino National Forest established designated "Quiet Areas" — now known as "Seasonal Closures" — in the 1980s to provide recreational spaces free from motorized traffic at certain times of the year.

Fire officials say the Pocket Fire’s heavy smoke that’s inundated Flagstaff has also helped moderate fire behavior as it drifts over the blaze.

Officials say ozone levels in Flagstaff have spiked in recent days as the Pocket Fire creates hazardous air quality for vulnerable populations.

On today's newscast: Kaibab firefighter killed in blaze, anniversary of deadly Yarnell Hill Fire, wildfire causing bad air quality for Flastaff-area, guilty verdict for polygamous sect leader, and more.

Crews on the Pocket Fire have stopped northward progress as they continue to conduct burnout operations and strengthen lines on the blaze that's grown to more than 15,000 acres.

A Coconino County jury found the polygamous sect leader at the center of the Netflix series, "Trust Me: The False Prophet," guilty of child abuse.

A wildland firefighter for the Kaibab National Forest was among those killed Saturday while working to suppress a wildfire in western Colorado.

Authorities said Nick Hutcherson, 27, of Glendale and two others were killed while responding to the Knowles Fire Saturday. Hutcherson was assigned to the U.S. Forest Service Kaibab National Forest.

On today's newscast: The latest updates on the Pocket Fire burning north of Sedona toward Flagstaff.