The Park Fire burning across four Northern California counties reached an estimated size of 414,771 acres as of Tuesday morning, August 6, becoming the fourth largest in the state’s recorded history, fire officials said.The arson-caused wildfire, which began July 24, had destroyed 636 structures as of Tuesday and damaged an additional 49, according to the California Department of Forestry and Fire Protection (CalFire).Footage taken from Colby Mountain shows smoke billowing from the fire, which was 34 percent contained on Tuesday.Dry and hot conditions were expected to challenge crews battling the blaze, CalFire said in an update on Tuesday morning. Credit: ALERTWildfire via Storyful