The Cottonwood Fire sparked Monday evening and is burning through Fishlake National Forest. That area is near Beaver in Millard County, in the center part of Utah.

It quickly ballooned to more than 24,000 acres and was 0% contained by Tuesday afternoon. A containment level marks the perimeter of the blaze where crews feel confident it will not move beyond.

The wildfire has prompted mandatory evacuations for Eagle Point, Merchant Valley, HiLo Estates, Arrowhead Summer Homes and all surrounding areas.

The Beaver County Sheriff’s Office has asked the public to avoid the B Mountain area. State Route 153 has also been closed in both directions between mileposts 2 and 25.

“The fire is growing rapidly,” the office said in a statement late Monday. “It is critical that we keep these roadways fully open so incoming emergency personnel, heavy apparatus and large excavation equipment can get up into the fire zone safely and quickly.”

The cause is currently undetermined.

Salt Lake Tribune reporter Courtney Tanner contributed to this story.