Early on, the blaze that erupted Monday burned a dozen cabins. According to reports from the scene, the first firefighter fell and fractured his knee, and the other twisted his ankle.
The head of the Orange County team fighting the Holy Fire said the blaze had started near Clark's cabin in Jim Canyon.
You can see how the smoke moves eastward from the fires in this map powered by WX Shift, a weather forecasting service.
Forrest Gordon Clark, 51, was charged Thursday on suspicion of aggravated arson with the intent to cause injury to another or damage property, arson of an inhabited property, arson of forest, making criminal threats and resisting arrest, KTLA reported.
Two other people have died in the Ferguson Fire, which has forced the partial closure of Yosemite National Park.
Luckily for East Coast residents, smoke that has made a 3,000-mile journey from California is now wafting a mile above street level so can't be seen or smelt.
Size: 9,600 acres Containment: 5%. Officials reported progress in the fight against two major Northern California wildfires - one called the Mendocino Complex Fire that is the largest in state history - burning more than 100 miles (160 kilometers) north of Sacramento.
Smoke particles from fires in California traveled far past year, too, when satellite images from NASA showed the smoke traveling over to the East Coast.
Truce is declared after latest violence in Gaza
Palestinians gather on the remains of a building after it was bombed by an Israeli aircraft, in Gaza City August 9, 2018 . Another night of terror & families huddling in fear as Israel defends itself.
The Holy Fire continues burning across Orange and Riverside counties, two of the state's most populous, and as of Thursday morning had scorched more than 9,600 acres - an nearly 50% increase from the night before.
Cal Fire Battalion Chief Jonathan Cox said the area has few natural barriers to slow flames and terrain that firefighters can't get to.
Sherwood said no witnesses have come forward saying they saw Clark start the fire, but the area of origin is around his residence.
Institute. Those areas had previously been under voluntary evacuation orders.
His court hearing was supposed to be on Thursday, but he refused to leave his jail cell. There, too, he urged officials to focus more attention on dead tree and brush removal to keep fires from spreading amidst the dry and hot conditions.
"This is a monster", Orange County Supervisor Todd Spitzer said on August 8, NPR reported.
The second biggest is the Carr Fire in Shasta County, also in Northern California. Two other people, a state fire heavy equipment mechanic assigned to the fire and a utility worker trying to restore power near the fire, have died in vehicle accidents.
A man charged with intentionally setting the fire is scheduled for arraignment on Friday.
More than 600,000 acres across the state have been consumed by this year's fire season, which experts warn is growing longer each year.