Updated: 6:53 p.m. June 29

First discovered: 29 days ago, 10:01 p.m. May 31

Initial location: Ventura County, Calif.

Fire type: Wildfire

Fire name: Mt Pinos Lightning Complex

The wildfire initially started 10:01 p.m. May 31 in Ventura County, Southeast Of New Cuyama.

The wildfire has been burning on federal land managed by the United States Forest Service for 29 days. As of Sunday evening, the fire has been fully contained. The cause remains undetermined. To date, the cost for managing the wildfire amounts to $240,000.

Fire containment

What does 100% containment mean?

Note that full containment doesn’t mean the fire is completely out. In this case, it means that the wildfire has been fully enclosed by a control line and it is now stopped from spreading. A fully contained wildfire may continue to burn within the containment perimeter but is not likely to spread.

However, there’s a significant difference between containing and controlling a wildfire. After the fire is fully contained, the next step is to control it. Controlling a fire means ensuring that the fire can’t spread or cross the containment line.

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: National Interagency Fire Center