Update: Nearly fully contained - Telephone Fire in San Bernardino County now at 90%

The creation of this content included the use of AI based on templates created, reviewed and edited by journalists in the newsroom. Read more on our AI policy here.

Updated: 4:21 p.m. June 13

First discovered: 3 hours ago, 1:02 p.m. June 13

Initial location: Telephone Rd and Summit Valley Rd, Hesperia, San Bernardino County, Calif.

Fire unit: San Bernadino County Fire

Fire type: Wildfire

Fire name: Telephone

Telephone Fire initially started today at 1:02 p.m. at Telephone Rd and Summit Valley Rd, Hesperia in San Bernardino County, California.

It has burned 14.7 acres after being active for three hours. A crew of 140 firefighters succeeded in containing 90% of the fire as of Saturday afternoon. The cause of it remains under investigation.

The firefighting efforts involve 12 engines, two water tenders, two helicopters, two dozers and four hand crews. According to Cal Fire, "Numerous firefighting air tankers from throughout the State are flying fire suppression missions as conditions allow."

Fire containment

What does it mean for a fire to be 90% contained?

The percentage indicates how much of the fire perimeter has been surrounded by a control line. In this case, it means that 90% of the wildfire is halted from spreading, while 10% is still uncontrolled.

Containment is part of a larger plan for managing a wildfire. It is normally expressed as a percentage and it refers to how much of the fire perimeter has been surrounded/enclosed by a control line that firefighters create. The containment percentage indicates a certain level of control, but it doesn't always correlate to safety level. Also, it's important to note that containment doesn't mean a fire is out.

How is containment measured?

The incident's central command constantly receives progress reports from firefighters on the ground. As the fireline is constructed, inspected or reinforced, mappers record those details to adjust the containment percentage. The percentage tells the public how much of the fire perimeter is believed to not go beyond the control lines.

Source: Cal Fire

United Robots Sacramento

This story was originally published June 13, 2026 at 3:22 PM.