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A wildfire threatened a portion of Eagle Mountain on Monday, forcing mandatory evacuations of homes.

Lightning sparked the fire Sunday on Camp Williams. The Utah National Guard reported the blaze has burned 2,000 acres.

Residents near Herriman, Eagle Mountain and Saratoga Springs were keeping an eye on the wildfire that up until 7 p.m., had not threatened homes.

Early in the day, leaders from those cities issued warnings for residents to have an evacuation plan ready. Already this year, fires have forced evacuations in those towns.

About 6:15 p.m., Eagle Mountain sent out a voluntary evacuation advisory for the north end of the North Ranch subdivision. About 7 p.m., that order became mandatory. In the North Ranch subdivision, everyone north of Lake View Lane was ordered out.

Eagle Mountain officials notified residents that Rockwell High, 3435 E. Stonebridge Lane, was the evacuation center and that large animals could be brought to the rodeo arena in City Center for refuge.

The largest fire Monday was the West Mountain Wildfire burning in steep and rocky terrain on the west side of Utah Hill in Washington County.

The blaze, which has burned an estimated 2,400 acres, was caused Saturday by multiple fires burning together into one large one.

The fire was about 50 percent contained and was threatening radio towers on Utah Hill, according to Utah fire officials. No evacuations were in effect and no injuries were reported.

The Pumpkin Fire was burning about 20 miles east of Spanish Fork, and had consumed about 176 acres. It was about 40 percent contained Monday morning, but crews were optimistic that they'd have it contained by Monday evening.

The fire was burning vegetation about a miles north of U.S. Highway 6. Firefighters were focused on protecting private property along Highway 6, high-tension power lines and railroad infrastructure.

Sunday's lightning-caused Pyramid Fire in Iron County, which had burning northwest of Enterprise and south of Modena, was about 80 percent contained Monday, fire officials said. Officials said the blaze was not expected to grow. It has consumed about 51 acres.

The Pine Canyon Fire had burned 375 acres 3 miles east of Grouse Creek in Box Elder County; it was 15 percent contained as of Sunday night, and continued to burn Monday, county officials reported.

Janelle Stecklein