LOS ANGELES — Firefighters scrambled Sunday to make further progress against wildfires that have destroyed thousands of homes and killed 16 people in the Los Angeles area as forecasters again warned of dangerous weather with the return of strong winds this week. At least 16 people were missing, and authorities said that number was expected to rise.

The National Weather Service issued red flag warnings for severe fire conditions through Wednesday, with sustained winds of 50 mph and gusts in the mountains reaching 70 mph. The most dangerous day will be Tuesday, meteorologist Rich Thompson said.

“You’re going to have really strong gusty Santa Ana winds, a very dry atmosphere and still very dry brush, so we still have some very critical fire weather conditions out there,” Thompson said at a community meeting Saturday night.

Los Angeles County Fire Chief Anthony Marrone said 70 additional water trucks arrived to help crews fend off flames spread by renewed gusts: “We are prepared for the upcoming wind event.”

Fierce Santa Anas have been largely blamed for turning the wildfires sparked last week into infernos that leveled entire neighborhoods around the city, which has seen no significant rainfall in more than eight months.

Twelve people were missing within the Eaton Fire zone and four were missing from the Palisades Fire, Los Angeles County Sheriff Robert Luna said. “Dozens” more reports might have come in Sunday morning and investigators are reconciling whether some of the missing might be among the dead.

Meanwhile, the death toll rose to 16 over the weekend. Five were attributed to the Palisades Fire and 11 resulted from the Eaton Fire, the Los Angeles County coroner’s office said Saturday evening.

The previous number of confirmed fatalities before Saturday was 11, but officials said they expected that figure to increase as teams with cadaver dogs conduct systematic grid searches in leveled neighborhoods.

Officials are building an online database to allow evacuated residents to see if their homes were damaged or destroyed. In the meantime, LA Fire Chief Kristin Crowley urged people to stay away from scorched neighborhoods.

“There are still active fires that are burning within the Palisades area, making it extremely, extremely dangerous for the public,” she said at a Sunday briefing. “There’s no power, there’s no water, there’s broken gas lines, and we have unstable structures. The first responders are working as quickly as possible to ensure that it is safe for you to return into your communities.”

Officials warned that the ash can contain lead, arsenic, asbestos and other harmful materials.

About 150,000 people in Los Angeles County remained under evacuation orders, with more than 700 residents taking refuge in nine shelters, Luna said.

By Sunday morning, Cal Fire reported that the Palisades, Eaton, Kenneth and Hurst fires had consumed more than 62 square miles, an area larger than San Francisco. The Palisades Fire was 11% contained, and containment on the Eaton Fire reached 27%. Those two blazes accounted for 59 square miles.

Crews from California and nine other states are part of the response that includes 1,354 fire engines, 84 aircraft and more than 14,000 personnel, including newly arrived firefighters from Mexico, he said.

Minimal growth was expected Sunday for the Eaton Fire, “with continued smoldering and creeping” of flames, an LA County Fire Department incident report said.

After a fierce battle Saturday, firefighters managed to fight back the flames in Mandeville Canyon, home to Arnold Schwarzenegger and other celebrities near Pacific Palisades not far from the coast, where swooping helicopters dumped water as the blaze charged downhill.

The fire ran through chaparral-covered hillsides and briefly threatened to jump over Interstate 405 and into densely populated areas in the Hollywood Hills and San Fernando Valley.

Looting continues to be a concern, with authorities reporting more arrests as the devastation grows. Michael Lorenz, a captain with the Los Angeles Police Department, said seven people have been arrested in the past two days.

“We even made arrests of two individuals that were actually posing as firefighters coming in and out of houses, so we’re paying very, very close attention to everybody,” Lorenz said at Saturday’s community meeting.

Asked exactly how many looters have been arrested, Lorenz said he couldn’t give a precise number but that officers were detaining about 10 people a day. California National Guard troops arrived Friday to help guard properties.

Gov. Gavin Newsom posted Saturday on X that “California will NOT allow for looting.”

The fires that began Tuesday just north of downtown LA have burned more than 12,000 structures.

Firefighters for the first time made progress Friday on the Eaton Fire north of Pasadena, which has burned more than 7,000 structures, a term that includes houses, apartment buildings, businesses, outbuildings and vehicles. Most evacuation orders for the area were lifted, officials said.

No cause has been determined for the largest fires, and they could be the nation’s costliest ever. A preliminary estimate by AccuWeather put the damage and economic losses so far at $135 billion to $150 billion.