The U.S. Forest Service says a lightning-sparked fire near Mammoth Mountain is now at 13,347 acres and is 85% contained.

The fire started around June 11 and now full containment is expected by October 7.

Fire crews say the flames have burned in both the Sierra National Forest and Inyo National Forest.

Nearly 85 personnel are on scene, including hand crews and aircraft.

Original story: Crews say the fire burned into areas where vegetation is less dense, slowing fire progression.

Winds are expected to shift to the northeast overnight. Smoke may be present in some areas. Air quality has improved for areas near Mammoth Lakes, Lee Vining, Bishop and Hawthorne. Fire crews are continuing to work on containment. 

The Lions Fire started in the Sierra National Forest around June 11. It's now burning near the Lion Point area in the Ansel Adams Wilderness. It crossed onto the Inyo National Forest on June 22 and is now being co-managed by both the Sierra and the Inyo National Forests. 

A community meeting was held Thursday at the Mammoth Lakes Welcome Center. Fire management staff presented the current situation on the fire and answered questions.

The Mono County Sheriff's Office says all trails remain open at this time, including the Pacific Crest Trail and the John Muir Trail.

Full containment is expected on July 14.

(The Associated Press contributed to this report.)