No injuries were reported and no structural damage had occurred, though flames did approach two rural homes on the fire's western edge late Tuesday before being turned back.
The cause of the fire, which began in low-lying grass and sagebrush and then was propelled by gusty winds uphill into stands of pinyon and juniper trees, was undetermined.
Meanwhile, crews had contained two other wildfires farther north: the 1,572-acre Ophir Creek blaze in Tooele County, and the 208-acre Wiley Fire, 15 miles west of Orem.
The National Weather Service issued a fire weather watch for the entire state with the exception of a patch of northeastern Utah including Vernal.
Fire and fireworks restrictions
As the Fourth of July approaches, several cities along the Wasatch Front have issued restrictions on where fireworks may be used.
Salt Lake City • All areas east of Foothill Drive, and east of 1300 East to 500 South, including the University of Utah campus
• All areas north of South Temple to State Street and North Temple to 200 West
• City Creek Canyon
• East of 200 West/Wall Street to 300 West
• East of 300 West north of Wall Street through Beck Street to the city limit to the north
• All city parks and wildland urban interface areas
• All areas west of I-215
Unified Fire Authority • Foothill areas in Herriman, Draper, West Valley City, Holladay, Cottonwood Heights, Sandy and Draper
Provo • Within city limits, except in designated fire pits in improved campgrounds and recreation areas. The city also forbids target shooting in the city limits. Several wildfires this season were sparked by target shooters.
Smith's • The grocery chain announced that due to the high fire danger, it will not be selling aerial fireworks at its Utah stores.