By the morning of August 16, the fire had expanded to . Evacuation orders were issued for areas in Lassen County south of SR 70 and west of U.S. Highway 395. SR 70 was closed between SR 49 and US 395 as fire crews worked to prevent the fire from spreading north of Beckwourth Pass. The fire briefly jumped north of SR 70 and east of US 395 but was quickly stopped in those directions. By the evening of August 16, helped by strong winds, the fire had burned . Evacuation orders were expanded to Balls Canyon Road, Long Valley Road, Bordertown, Copperfield, and Cold Springs as the fire spread east into Nevada and the Humboldt-Toiyabe National Forest. About 580 firefighters, 42 engines and 6 aircraft were on the scene.