Southern California wildfires: What to know

At least four fires are burning within 100 miles of Los Angeles — here's where they are and what you need to know, at a glance.

Bridge fire

The Bridge fire broke out Sunday afternoon in the Angeles National Forest northeast of Glendora in the East Fork of San Gabriel Canyon. By Wednesday, the fire had grown by thousands of acres and was burning out of control. Mandatory evacuations had multiplied, including in Wrightwood and Palmdale.

Officials have said they are most concerned about Mount Baldy Village and Wrightwood, but an evacuation warning was also issued for the foothill neighborhoods of Upland and San Antonio Heights.

A live camera feed from Mountain High Resort showed flames burning through a ski lift area.

Firefighters are battling the blaze amid an excessive heat warning in effect until Wednesday afternoon. Low humidity levels and gusty winds have made the fire more difficult to control.

Acreage: 47,904

Containment: 0%

Mandatory evacuations:

• 30 residences in Wrightwood and Palmdale
• East Fork communities of Camp Williams Resort, which includes a mobile home park and campground, and the adjacent river community
• Homes along Mt. Baldy Road and all residents north of the San Antonio Dam up to Mt. Baldy

Shelters:

• Hacienda Heights Community Center at 1234 Valencia Ave., Hacienda Heights
• Jessie Turner Health and Fitness Community Center at 15556 Summit Ave.
• San Bernardino County Fairgrounds at 14800 7th St. in Victorville
• Pomona Fairplex at 601 W. McKinley Ave. in Pomona
• Devore Animal Shelter at 19777 Shelter Way, San Bernardino, for large and small animals
• Antelope Valley Fairgrounds at 2551 W Avenue H in Lancaster, for large animals

Airport fire

The Airport fire, caused by a spark from heavy equipment, exploded Monday in Trabuco Canyon and was racing up the Santa Ana Mountains on Tuesday. Eight firefighters and two civilians were injured and sent to hospitals for treatment Monday and Tuesday, according to fire officials.

Acreage: 22,376

Containment: 0%

Mandatory evacuations:

• Robinson Ranch
• Trabuco Highlands
• The Highlands apartment complex
• Blue Jay Campground
• Caspers Regional Park

Shelters

• Bell Tower Regional Community Center at 22232 El Paseo in Rancho Santa Margarita
• Orange County Fairgrounds at 88 Fair Drive in Costa Mesa for large animals

Line fire

The Line fire started Thursday in San Bernardino County. Three firefighters were injured in the first couple of days of the fire. Firefighters were having to negotiate steep terrain with difficult access, particular in the Big Bear area, according to Cal Fire. There were 65,600 structures threatened by the blaze.

Acreage: 34,659

Containment: 14%

Mandatory evacuations:

• The area east of Orchard Road to Cloverhill Drive from Highland Avenue north to the foothills
• Running Springs and Arrowbear Lake
• Forrest Falls
• Mountain Home Village
• Angelus Oaks, Seven Oaks and all campgrounds and cabins in the area
• Areas north and east of Highland Avenue and Palm Avenue
• Green Valley Lake north from Highway 18 along Green Valley Lake Road
• Big Bear from the dam east to Wildrose Lane and the south shoreline south to Bluff Lake Basin

Shelters:

• San Bernardino County Fairgrounds at 14800 7th St. in Victorville
• Jessie Turner Health and Fitness Community Center at 15556 Summit Ave. in Fontana
• Devore Animal Shelter at 19777 Shelter Way in San Bernardino

Roblar fire

The Roblar fire began Saturday afternoon at Camp Pendleton near Case Springs Road in San Diego County. There is no threat to personnel or structures, according to Camp Pendleton.

Acreage: 1,000

Containment: 85%

This story originally appeared in Los Angeles Times .