MARRIOTT-SLATERVILLE -- Firefighters spent Thursday morning putting out numerous little fires that stretched about 2 miles on the south side of 12th Street from Ogden into West Weber.
The fires, which burned mostly dry cheatgrass, may have been caused by a train traveling through the area, said Weber County Deputy Fire Chief Paul Sullivan.
The fires dotted the area from about 1200 West in Ogden to about 2800 West in West Weber.
No homes or power poles were in danger. The fire, which was called in about 10 a.m., was on the north side of the railroad tracks and the south side of the road.
Officials closed 12th Street from 1900 West to about 3500 West both ways, so fire crews from Ogden and Weber fire agencies could put out the fire.
"A witness who called it in to the station said she saw a train start it," Sullivan said.
Crews were able to get most of the fires out and worked on mopping up hot spots for several more hours, he said.
The area is mostly covered with cheatgrass and numerous trees, including cottonwood.
"We have a lot of dry fuel in this area," Sullivan said.
Fire crews were concerned that any wind would send the fire south of the railroad tracks, where homes and buildings are located.
Six brush trucks and two engines from both departments were at the scene.
One of the fires was next to the off-ramp from Interstate 15 to 12th Street. It was closed for a short time while crews put out the flames.
Fire crews moved from one site to the next and filled the trucks with water at a fire hydrant on 2800 West on the north side of 12th Street.
Sullivan said besides watching the hot spots in the grassy area, crews were worried the fire would get into the trees.
"If it did, then we would have a significant fire."
Two large wildfires have also been burning since Tuesday in western Box Elder County.
The Rhyolite Fire on the east side of the Pilot Mountains is only 2 percent contained and had spread to 2,000 acres since it started around 2 p.m. Wednesday.
The fire potentially threatens a communication site and some ranches, according to the Utah Bureau of Land Management. The community of Tacoma, Nev., is also a concern but not immediately threatened.
Firefighters are attacking the blaze from the air with the aid of a helicopter and air tankers. Five engines are also on scene to fight the lightning-caused fire.
Lightning also sparked the Meadow Fire, 20 miles from Grouse Creek, which started about 2 p.m. on Tuesday. As of Thursday evening, the fire was only 10 percent contained.
The fire was threatening at least two homes and 10 outbuildings but was still far enough away that no evacuations had been ordered.
Standard-Examiner reporter Michael McFall contributed to this article.