The fire is has burned approximately 478 acres with a "dangerous rate of spread" through heavy brush, firefighters said.

Containment indicates what percentage of the fire perimeter has been surrounded by a control line. In this case, it means that 50% of the wildfire is halted from spreading, while

The wildfire near Silverwood Lake started at 3:58 p.m. on Saturday and grew to nearly 500 acres in just hours.