The East Troublesome Fire has exploded across Colorado’s Grand County, growing by about 100,000 acres Wednesday night and another 50,000 acres yesterday.

The blaze — raging during a severe drought at an elevation that usually sees snow at this time of year, fueled by high winds and record heat, and engulfing timber killed or weakened by a bark beetle infestation — bears nearly all the hallmarks of climate change. The East Troublesome fire has burned more than 170,000 acres, making it the second-largest in Colorado history, though it could merge with the Cameron fire, the state’s largest ever fire.

“I can’t begin to tell you, it was so gut-wrenching when I opened up the [home security camera] app and I saw fire coming up our driveway and up the hillside,” Katy Brown told CNN affiliate KUSA. “It was horrific, absolutely horrific to watch. I’ve never experienced anything like that before.”