USA Today reports that a man has been arrested for deliberately setting the #KingFire in the El Dorado National Forest east of Sacramento, Calif. Wayne Allen Huntsman, 37, is is jail on $10 million bond and will be arraigned Friday. USA Today notes that the fire has exploded in size overnight:

…firefighters had hoped that cooler temperatures and higher humidity that were forecast could help them begin controlling the 111-square-mile wildfire that increased 1.5 times in size from Wednesday to Thursday.

The fire has been burning in steep canyons since Saturday and exploded in size Wednesday and early Thursday after 90-degree temperatures helped fuel its spread. Firefighters said the fire initially started at the top of a canyon, rolled downhill slowly and then roared back uphill.

The #KingFire has been well documented on Twitter.