LOS ANGELES — Firefighters reported some progress Tuesday against a gigantic blaze on the edge of Los Angeles, but warned that this one might be just a preview of even greater dangers ahead.
The peak Southern California fire season hasn't even started yet. The worst fires typically flare up in the fall, when ferocious Santa Ana winds can drive fires out of wilderness areas and into suburbs. As a result, Southern California could be in for a long wildfire season.
"When you see a fire burning like this, with no Santa Ana winds, we know that with the winds, it would be so much worse, so much more intense," said Los Angeles County fire Capt. Mark Whaling.
The Santa Anas can be devastating during a large fire because they sweep down from inland highlands and reach withering speeds as they squeeze through canyons and passes and plunge into developed areas.
Winds mostly calm
Even though winds have been mostly calm since the blaze began along the northern fringe of Los Angeles and its suburbs, the flames have spread over 190 square miles of forest in a week. Some 12,000 homes remained threatened as 3,600 firefighters and aircraft battled the blaze across a 50-mile line.
But it was not the only significant blaze in Southern California.
In the inland region east of Los Angeles, 2,000 homes were being threatened by a fire of more than 1.5 square miles near the San Bernardino County community of Oak Glen, and a nearby 1.3-square-mile blaze was putting 900 homes at risk in Yucaipa.
"There's action everywhere," Gov. Arnold Schwarzenegger said as a helicopter interrupted his comments at a news conference in San Bernardino County.
The big fire, known as the Station Fire, was just 5 percent surrounded, but U.S. Forest Service incident commander Mike Dietrich said that figure could double by the end of the day, and he was pleased with progress.
"There's a lot more work to be done," Dietrich said. "It's still a very treacherous situation. It could still turn around."
Weather was more humid, which helps brush resist burning, but the downside was a possibility of dry lightning. Some sprinkles were reported, but no significant rain.
Threat to Mount Wilson
Officials were worried about the threat to a historic observatory on Mount Wilson northeast of Los Angeles. But on Tuesday, the flames near the facility appeared much tamer than the infernos that boiled up out of the mountain range in previous days.
Authorities could not immediately ascertain whether a fire at the top of Mount Wilson was the result of the overall advance of the blaze or backfires set by fire crews.
From a helicopter above the 5,700-foot peak, small flames could be seen creeping under trees. Firefighters had doused the peak with flame retardant before withdrawing when the fire appeared to be too dangerous.
Mount Wilson is home not only to the observatory but numerous television, radio and cell phone antennas serving the metropolitan area. Loss of the communications facilities would cripple fire and police departments across Southern California, which not only use mountaintop transmitters to communicate in the field but in many cases relay signals from other mountaintop sites back to dispatch centers via microwave facilities that are now threatened.Video: Fighting fire with fire
“We’re waiting to see what’s going to happen once the fire burns through there,”
Capt. Mark Whaling of the Los Angeles County Fire Department told NBC station KNBC of Los Angeles. The observatory, a thriving modern center for astronomy, houses two giant telescopes and several multimillion-dollar university programs.
Fire commanders said they did not expect to have the fire under control until at least Sept. 15, but for the first time since it erupted into a giant, they sounded a positive note Tuesday.
The fire grew by 16,000 acres overnight, to 121,762 acres, Whaling said. By itself, “that is a huge, significant number,” he said, but it represented only “a small portion of what it did the day before.”
Dietrich said that was cause for hope.
“I’m feeling a lot more optimistic today than I did yesterday, and the crews are doing fabulous work out there on the grounds, but the bottom line is that they’re fighting for every foot,” Dietrich said.
Keeping a close eye on the weather
Firefighters were keeping a close eye on the weather. Hurricane Jimena roared toward Baja California, Mexico, but it was expected to have little effect on firefighting efforts.
There was, however, a 20 percent chance of a thunderstorm in the fire area Tuesday. Ran would usually be good news, but the National Weather Service said this storm could spawn 40-mph wind gusts and even dry lightning. So far, light winds have helped keep the fire from raging even further out of control.
The fire is one of hundreds of wildfires in a season that usually does not gather steam until October, when the Santa Ana winds arrive.
This year's destructive Southern California wildfires began in May, when 80 homes were destroyed and more than a dozen others were damaged in the Santa Barbara area. "Sundowner" winds, a localized version of a Santa Ana, whipped a brush fire into an inferno in neighborhoods on the edge of the Los Padres National Forest.
Wind has not been a problem in the current fire, but drought has. The region is in the midst of a three-year drought, and the tinder-dry forest is ripe for an explosive fire.
Residents had a range of emotions as they watched the fire — and they knew the lack of wind was a godsend.
"I'm a little concerned but not overly worried," said retiree Paul Westmoreland, 77, who lives in the Seven Hills neighborhood in Tujunga. "But if we had had high winds, this whole area would have gone."
‘It's a lot of stress and anxiety’
Some of the spectators were residents who followed orders to leave but could not resist coming back to their neighborhoods.
Jennifer Pelon, 43, came back Tuesday morning to see if her 3,000-square-foot home on a hillside was still standing. She nervously watched as flames licked a ridgeline only yards from her home.
"It's a lot of stress and anxiety, watching," she said. "It's your whole life up there."
At the huge fire command center, Glendale firefighter-paramedic Jack Hayes, 31, recounted how he manned a 2,000-gallon water truck to extinguish flames bearing down on backyards.
"We've been knocking them all down and saving some homes," he said.
Hayes said he had not taken a day off for a week.
"You can't sleep," said Hayes, who had the beginnings of a beard and bloodshot eyes. "You're ready to go and there's always something you could be doing."
Two firefighters — Capt. Tedmund Hall, 47, of San Bernardino and firefighter Specialist Arnaldo "Arnie" Quinones, 35, of Palmdale — were killed Sunday when their vehicle plummeted off a mountain road. Quinones' wife is expecting a child soon, and Hall had a wife and two adult children.
White House sends condolences
In Washington, White House spokesman Robert Gibbs said President Barack Obama and first lady Michelle Obama sent their condolences to the firefighters' families. Gibbs said the White House will do whatever it can to assist state and local governments.
The Station Fire was the biggest but not the most destructive of the wildfires currently burning in California. Northeast of Sacramento, a fire burning over a half square mile destroyed 60 structures over the weekend, many of them homes in the town of Auburn. The fire was 80 percent contained Tuesday and no longer threatened any homes.
Other California fires
The blaze in the Los Angeles foothills was the biggest but not the most destructive of California’s wildfires. Northeast of Sacramento, a wind-driven fire destroyed 60 structures over the weekend, many of them homes in the town of Auburn.
Video: Battling blazes from the air The 340-acre blaze wiped out an entire cul-de-sac, leaving only smoldering ruins, a handful of chimneys and burned cars.
East of Los Angeles, a 1,000-acre fire damaged one home, threatened 2,000 others and forced the evacuation of a scenic community of apple orchards in an oak-studded area of San Bernardino County. Brush in the area had not burned for a century, fire officials said. Flames burning like huge candles erupted between rocky slopes of the San Bernardino Mountains and the neat farmhouses below.
A few miles away, a 500-acre wildfire that erupted in Oak Glen, on the edge of Yucaipa, forced the evacuation of 900 homes. The fire was reported to be 30 percent contained Tuesday afternoon.
More on: California
By msnbc.com with Robert Kovacik of NBC station KNBC of Los Angeles. The Associated Press contributed to this report.