OGDEN -- A fire burned up at least 10 acres of the mountainside above 900 North on Thursday afternoon.
About 40 firefighters battled the blaze in Jump Off Canyon that produced considerable smoke, visible for several miles.
Ogden Fire Battalion Chief Hal Van Meeteren said Ogden and Weber fire districts had equipment and firefighters at the scene, with additional firefighters from the Utah Division of Forestry.
The fire began around 4 p.m. on the warm, dry day, and the cause is still under investigation.
Neidra Merrill, who lives on Avalon Hills Drive below the fire, said her 13-year-old son came running in, telling her about a fire on the mountain. She looked out to see a small fire burning up a tree and a male, of unknown age, running away from the fire.
"I could hear the fire crackling" from her house, she said.
She does not know if the male started the fire, but she called 911 and reported what she saw.
She and her neighbors gathered on Avalon Hills Drive to watch as firefighters convened and started their attack.
The area where the fire was burning is accessible only by foot. The fire spread south and east, but no homes were threatened.
The rugged terrain kept firefighters from attacking the main body of the fire, so they flanked it on either side, using water from a canal at the base of the fire.
Ken Bakes, who lives a few doors south of Merrill, saw the fire when it was just flames destroying a few trees. Then it quickly spread up the mountain, he said.
Bakes has lived in the neighborhood for 12 years and said this is at least the third fire in the area. He remembers from fires past how quickly a fire can get out of hand because of wind, he said, pointing out the oak trees along the trails that the smoke was blowing toward.
Van Meeteren hoped firefighters could extinguish the blaze before the wind became a problem.
From the batch of trees where the fire started, it spread and grew with the south wind, said Ogden Fire Deputy Chief Eric Bauman.
The National Weather Service predicted that the calm wind in the afternoon would grow stronger into the evening hours, blowing about 8 to 11 mph. Today, the winds are expected to pick up to about 18 to 21 mph ahead of a cold front.
The Forest Service firefighters were aggressively suppressing the fire in anticipation of that impending cold front, Bauman said.
The mountainside above the frontage road is Forest Service land, said Cody Peel, the north zone fire management officer for the service. But where the fire started, below the road, is private.
The Forest Service helicopter was not available to fight the fire because it had not yet been contracted for the season, Peel said. However, the helicopter's crew still showed up to fight the fire on foot.
The fire was out by 7:30 p.m., though some firefighters from Ogden and the Forest Service planned to stick around overnight to clean up and make sure no hot spots flared up.