Boundary Fire

The Boundary Fire was a 2017 wildfire in Arizona that burned 17,788 acres (7,199 ha) of the Coconino and Kaibab National Forests. The fire was ignited on June 1 when lightning struck a spot on the northeast side of Kendrick Peak within the Coconino National Forest. The fire spread rapidly because of high temperatures, steep terrain, leftover dead trees from a wildfire in 2000, and high wind speeds.

The winds blew smoke over local communities and infrastructure, leading to the closure of U.S. Route 180 from June 8 to June 21. Smoke was also visible from the Grand Canyon. The Boundary Fire burned out on July 3, 2017, after 32 days of firefighting. The cost of managing the fire was $9.4 million (equivalent to $11.8 million in 2024). Damage to the area's foliage increased the risk of landslides into 2018.