Update: Containment progress - Summit Fire in Los Angeles County at 15%
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Updated: 8:37 a.m. July 12
First discovered: 43 hours ago, 1:29 p.m. July 10
Initial location: Jesus Canyon Road East and Avenue Z, Llano, Los Angeles County, Calif.
Fire unit: Unified Command: Cal Fire, LA County Fire Department, San Bernardino County Fire and USFS Angeles National Forest
Fire type: Wildfire
Fire name: Summit Fire
Summit Fire initially started 1:29 p.m. July 10 at Jesus Canyon Road East and Avenue Z, Llano in Los Angeles County, California.
As of Sunday morning, it had swept through 2,690 acres. By Sunday morning, 15% of the fire was brought under containment. At present, details about the cause of the fire are unknown.
Fire containment
What does it mean for a fire to be 15% contained?
Containment indicates what percentage of the fire perimeter has been surrounded by a control line. In this case, it means that 15% of the wildfire is halted from spreading, while 85% 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 July 12, 2026 at 7:26 AM.