SIERRA MADRE, Calif. (AP) -- Firefighters gained ground Sunday against an early season wildfire that slowly chewed its way through dense brush near Los Angeles, forcing more than 1,000 people from homes in the foothills.
About 500 firefighters attacked the 400-acre fire, aided by two helicopters and water-dropping air tankers, said Elisa Weaver, spokeswoman for the city of Sierra Madre. Residents evacuated at least 550 homes Saturday night and Sunday, but none had burned.
"This is pretty serious," Weaver said. "Some of these areas have not burned in over 40 years."
Crews had the fire 30 percent contained by Sunday evening, Sierra Madre spokesman James Carlson said. Light winds and rising humidity were aiding firefighters, who hoped to have the blaze fully contained within 4-7 days, Carlson said.
Helicopters dropped water on a steep ridge above Sierra Madre near Bailey Canyon Wilderness Park, about 15 miles northeast of Los Angeles and just east of Pasadena. A fixed-wing water tanker also dropped flame retardant.
Aircraft were also helping fire officials assess the movement of the blaze, which was being pushed northwest into Angeles National Forest, said Batallion Chief Tim Davis of the Forest Service.
"It's very steep, inaccessible terrain, and it's very heavy brush," Davis said at a news conference. "Very difficult and arduous labor for these crews. You can't get bulldozers into the majority of where these fingers of fire run."
The blaze also stranded 50 guests from a wedding party at the Chantry Flats ranger's station on Saturday until they were airlifted out Sunday afternoon, Weaver said. It took five helicopter trips from the ranger's station to the parking area where the wedding party's cars were. The party then was escorted out by road.
The fire was first reported Saturday afternoon in a wooded area a few miles northeast of Pasadena. It was windy at the time and unseasonably hot, with temperatures approaching 100 degrees.
The flames also brought the evacuation of a Boy Scout camp Saturday and left about 100 hikers stranded in a parking lot. Most of the Scouts had already left the camp by the time the evacuation was ordered, Weaver said, and no injuries were reported.
Firefighters originally had hoped to have the blaze contained Sunday, but gusting winds late Saturday night kept the fire out of control and sent it creeping toward nearby homes. The mandatory home evacuations came shortly before 11 p.m.
Two shelters have been set up for evacuees at a senior center and a church.
Flames outlined steep ridges about a mile above Sierra Madre, a San Gabriel Mountains foothill community of about 11,000 popular with artists. All the city's schools canceled classes Monday.
To the south in San Diego County, about 40 acres burned in thick brush about 15 miles north of downtown San Diego. No injuries or property damage had been reported, a San Diego Fire Department spokeswoman said.
(This version CORRECTS Elisa Weaver's employer from the Arcadia Fire Department to the city of Sierra Madre.)