Update: Containment efforts for Jefford Fire in Tehama County hit 75%

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Updated: 6:46 a.m. June 11

First discovered: 18 hours ago, 12:26 p.m. June 10

Initial location: Jefferd Lane and View Lane, Northwest Red Bluff, Tehama County, Calif.

Fire unit: Cal Fire Tehama-Glenn Unit

Fire type: Wildfire

Fire name: Jefford Fire

Jefford Fire initially started 12:26 p.m. June 10 at Jefferd Lane and View Lane, Northwest Red Bluff in Tehama County, California.

After being active for 18 hours, it has burned 25 acres. 75% of the fire was brought under containment by a fire crew of 97 as of Thursday morning. However, the cause is still being investigated.

The fire suppression efforts involve 18 engines, four water tenders, two helicopters, three dozers and nine hand crews. According to Cal Fire, "Numerous firefighting air tankers from throughout the State are flying fire suppression missions as conditions allow."

Fire containment

Interpreting what 75% containment means

Containment indicates what percentage of the fire perimeter has been surrounded by a control line. In this case, it means that 75% of the wildfire is halted from spreading, while 25% 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 June 11, 2026 at 7:07 AM.