Update: Acres burned in San Diego County grows to 402.1, Range Fire still 20% contained

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Updated: 9:25 a.m. July 1

First discovered: 17 hours ago, 3:27 p.m. June 30

Initial location: USMC Camp Pendleton, San Diego County, Calif.

Fire unit: USMC Camp Pendleton

Fire type: Wildfire

Fire name: Range Fire

Range Fire initially started 3:27 p.m. June 30 at USMC Camp Pendleton in San Diego County, California.

Since its discovery 17 hours ago, it has burned 402.1 acres. As of Wednesday morning, the fire crew managed to contain 20% of this wildfire. The cause of it remains under investigation.

See live video from the area:

Https://cameras.alertcalifornia.org/?id=Axis-BuffaloBumpSouth

Fire containment

Understanding what 20% containment means

Containment indicates what percentage of the fire perimeter has been surrounded by a control line. In this case, it means that 20% of the wildfire is halted from spreading, while 80% 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

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This story was originally published July 1, 2026 at 7:03 AM.