Update: Containment progress - Lumbee Fire in Lassen County at 25%

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Updated: 8:51 a.m. July 13

First discovered: 40 hours ago, 4:16 p.m. July 11

Initial location: Dixie Valley, Lassen County, Calif.

Fire unit: Cal Fire Lassen-Modoc Unit & Lassen National Forest

Fire type: Wildfire

Fire name: Lumbee Fire

Lumbee Fire initially started 4:16 p.m. July 11 in Dixie Valley in Lassen County, California.

As of Monday morning, eight acres of land had been scorched by it. By Monday morning, the fire crew effectively contained 25% of the wildfire. There is currently no information on the cause of the fire.

Fire containment

Interpreting what 25% containment means

The percentage indicates how much of the fire perimeter has been surrounded by a control line. In this case, it means that 25% of the wildfire is contained from spreading, while 75% 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 13, 2026 at 9:13 AM.