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Updated: 6:40 a.m. July 26
First discovered: 6 days ago, 4:50 p.m. July 20
Initial location: Black Rock Springs Road and Hwy 395, Poverty Hills, Inyo County, Calif.
Fire unit: Unified Command: Cal Fire San Bernardino Unit, Inyo National Forest, Inyo County Sheriff’s Department
Fire type: Wildfire
Fire name: Rock Fire
Rock Fire initially started 4:50 p.m. July 20 at Black Rock Springs Road and Hwy 395, Poverty Hills in Inyo County, California.
As of Sunday morning, it had destroyed 12,008.4 acres. By Sunday morning, 45% of the fire was brought under containment. At present, there are no details on the cause of the fire.
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Fire containment
This is what 45% containment means
The percentage indicates how much of the fire perimeter has been surrounded by a control line. In this case, it means that 45% of the wildfire is contained from spreading, while 55% 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.
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Source: Cal Fire
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This story was originally published July 26, 2026 at 6:58 AM.