Update: 65% containment reached for Owl Fire in Tuolumne County

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Updated: 6:40 a.m. July 1

First discovered: 20 hours ago, 10:12 a.m. June 30

Initial location: Highway 108, Green Springs, Tuolumne County, Calif.

Fire unit: Cal Fire Tuolumne-Calaveras Unit

Fire type: Wildfire

Fire name: Owl Fire

Owl Fire initially started 10:12 a.m. June 30 on Highway 108, Green Springs in Tuolumne County, California.

It has burned 120 acres after being active for 20 hours. By Wednesday morning, the fire crew succeeded in containing 65% of the wildfire. However, the cause is still under investigation.

See live video from the area:

Https://cameras.alertcalifornia.org/?id=Axis-SonoraWest

Fire containment

What does it mean for a fire to be 65% contained?

The percentage indicates how much of the fire perimeter has been surrounded by a control line. In this case, it means that 65% of the wildfire is halted from spreading, while 35% 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 1, 2026 at 7:02 AM.