TROUT LAKE, Wash. (AP) - Steady breezes and warm temperatures helped push a wildfire in south-central Washington into more timber Tuesday, as firefighters elsewhere in the state gained ground on blazes that have been burning for days.

Meanwhile, authorities in Spokane Valley identified the person they believe to be inadvertently responsible for starting last week's destructive fire there as Tracy Berg, a surgeon whose home was not damaged in the blaze that destroyed 11 houses.

Improved mapping showed the Cold Springs fire near Mount Adams has burned about 11 square miles, or 7,160 acres, in the Gifford Pinchot National Forest and on the Yakama Indian Reservation. The fire about 7 miles northeast of Trout Lake was 5 percent contained Tuesday evening, fire information officer Kim Smolt said.

First reported late Saturday, the fire was believed to have been started by lightning several days earlier.

Winds were pushing the fire to the east into thick timber stands on the Yakama reservation. No homes were threatened.

Authorities closed the Cold Springs trailhead, or south trail, which is a primary access point for climbers aiming to ascend the 12,276-foot peak.

A central Oregon crew assumed management of the firefighting effort Tuesday. More than 515 firefighters were assigned to the blaze, and more were arriving. No injuries have been reported.

The National Weather Service warned of "red flag conditions'' through Wednesday for parts of the Pacific Northwest region east of the Cascades, where warm temperatures, low humidity and sustained winds of up to 30 mph in some areas could increase fire danger.

However, crews gained ground on a number of fires in the region.

To the northeast, officials said an evacuation advisory would be lifted as of 6 a.m. Wednesday, fire spokeswoman Mariah Leuschen said. The advisory had warned people in some 2,300 homes east of Spokane to be ready to evacuate if the Spokane Valley fire grew.

However, the fire was 90 percent contained Tuesday night at 1,006 acres, and crews hoped to fully contain it by 6:30 a.m. Thursday, Leuschen. Some crews were being demobilized Tuesday.

The fire began last Thursday from an "unapproved, un-extinguished'' recreational fire, said Bill Clifford, deputy fire marshal with the Spokane Valley Fire Department.

Berg had supervised the fire the previous Monday, July 7, on a wooded, vacant lot adjacent to her property, Clifford said. It was not extinguished, and high winds on Thursday caused it to re-ignite and spread, he said.

Berg declined to tell The Spokesman-Review newspaper whether she has a fire pit. She said she had cooperated with investigators.

"I, like everybody, am just waiting until they do their investigation,'' she told the newspaper. "It's just been unbelievable.''

At the Badger Mountain fire complex north of Wenatchee, officials lowered the Level 3 evacuation order to Level 2, meaning residents of about 160 homes could return. The two fires there have burned 23 square miles, or 15,023 acres, but the Badger Mountain fire was 75 percent contained Tuesday, spokesman Dave Cox said. Full containment was expected Sunday, he said.

Crews fully contained the Browns Canyon fire on Monday evening.

Twelve miles east of Tonasket in far north-central Washington, the Cayuse fire was 100 percent contained Tuesday at 1,778 acres. The Willow Lakes fire, on about 5,000 acres southeast of Soap Lake, and several smaller fires near Inchelium also were fully contained.