Update: Containment of Lonestar 2 Fire in San Diego County progresses to 60%

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Updated: 8:25 p.m. June 27

First discovered: 2 hours ago, 6:25 p.m. June 27

Initial location: 8671 Lonestar RD, Otay Mesa, San Diego County, Calif.

Fire unit: Cal Fire San Diego Unit

Fire type: Wildfire

Fire name: Lonestar 2 Fire

Lonestar 2 Fire initially started today at 6:25 p.m. on 8671 Lonestar RD, Otay Mesa in San Diego County, California.

Since its discovery two hours ago, it has burned 15 acres. A fire crew of 26 succeeded in containing 60% of the fire by Saturday evening. However, investigations into the cause are ongoing.

Six engines, two water tenders, one dozer and one hand crew will continue to combat the blaze. According to Cal Fire, "Numerous firefighting air tankers from throughout the State are flying fire suppression missions as conditions allow."

Fire containment

What does 60% containment mean?

Containment indicates what percentage of the fire perimeter has been surrounded by a control line. In this case, it means that 60% of the wildfire is contained from spreading, while 40% 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 June 27, 2026 at 7:19 PM.