A lightning-ignited wildfire was reported on Saturday at 5:15 p.m. about three miles south of Old Faithful in Yellowstone National Park.
Smoke from the fire caused the closer of The Grand Loop Road south of Old Faithful between Kepler Cascades and West Thumb at 10:30 p.m. on Saturday. The road remains closed, according to a release from YNP.
As of Saturday evening, the fire was estimated at 300 acres and not burning towards Old Faithful. Staff are implementing protection measures for the Old Faithful area in the event the fire moves in that direction.
Addition closures include Backcountry campsites OA1, OA2 and OA3 and Lone Star Geyser Trail.
Lightning activity has been heavy in the park throughout the past week and the fire danger is very high. Campfires in the backcountry are not allowed.