Updated: 10:27 a.m. Aug. 1

First discovered: 18 hours ago, 4:15 p.m. July 31

Initial location: Paiute Lane and Peak Road, Susanville, Lassen County, Calif.

Fire unit: Cal Fire Lassen-Modoc Unit

Fire type: Wildfire

Fire name: 1-4 Fire

1-4 Fire initially started 4:15 p.m. July 31 in Lassen County, California.

It has burned 259.6 acres after being active for 18 hours. A crew of 160 firefighters has been working on site and they managed to contain 25% of the fire as of Friday morning. Investigations into its cause are still ongoing.

The firefighting efforts involve 15 engines, 16 water tenders, four helicopters, four dozers and five hand crews. According to Cal Fire, “Numerous firefighting air tankers from throughout the State are flying fire suppression missions as conditions allow.”

See live video from the area:

Https://ops.alertcalifornia.org/cam-console/Axis-AntelopeMtn

Fire containment

Interpreting what 25% containment means

The percentage indicates how much of the fire perimeter has been surrounded by a control line. In this case, it means that 25% of the wildfire is contained from spreading, while 75% 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