A wildfire burning near the Grand Canyon has grown into what experts call a “megafire,” and it has even developed its own weather. The Dragon Bravo fire has been burning for a month near the Grand Canyon’s North Rim after it was sparked by lightning on July 4, according to a news release from the Southwest Area Complex Incident Management Team.

The Dragon Bravo Fire exploded in size to 105,415 acres along the Grand Canyon’s North Rim on Thursday as heat and strong winds drove the growth.

A wildfire in northern Arizona has grown thousands of acres in just a few days as firefighters continue to work to regain containment.