The American fire, burning north of Foresthill in Placer County, has grown to 1,900 acres, but officials this evening reported that it is 5 percent contained.
"We had a fairly good day," said Mark Brown, a public information officer with the U.S. Forest Service.
He credited today's progress to less breeze as well as the firefighting forces on scene. Brown said crews were able to establish fire lines along some of the ridges.
A total of 538 people were involved in the effort today, including 20 hand crews, along with 13 engines, two dozers, 11 water tenders and six helicopters. Air tankers also assisted throughout the day.
The fire started about 4:30 p.m. Saturday in the Deadwood Ridge area abut 17 miles northeast of Foresthill in an area of heavy timber and has not threatened any communities. Brown said it continues to burn in a northerly direction.
The cause of the fire is under investigation.
Smoke from the fire is expected to continue to affect the areas of Foresthill, Auburn, Nevada City and the Sacramento Valley for several days.