Update: Hill Fire in Shasta County remains at 80% containment by Monday evening

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Updated: 5:47 p.m. July 13

First discovered: 5 hours ago, 12:31 p.m. July 13

Initial location: Claudio Lane and Happy Hills Road, West Valley, Shasta County, Calif.

Fire unit: Cal Fire Shasta-Trinity Unit

Fire type: Wildfire

Fire name: Hill Fire

Hill Fire initially started today at 12:31 p.m. at Claudio Lane and Happy Hills Road, West Valley in Shasta County, California.

By Monday evening, it had destroyed 16.1 acres. As of Monday evening, 80% of the fire was brought under containment. At this time, there are no details on the cause of the fire.

Fire containment

What does it mean for a fire to be 80% contained?

Containment indicates what percentage of the fire perimeter has been surrounded by a control line. In this case, it means that 80% of the wildfire is halted from spreading, while 20% 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 12:57 PM.