Update: Solar Fire in San Luis Obispo County remains 100% contained as of Saturday afternoon

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Updated: 4:10 p.m. June 13

First discovered: 4 hours ago, 12:06 p.m. June 13

Initial location: Boulder Creek Rd and Gypsum Trl Valley, San Luis Obispo County, Calif.

Fire unit: Cal Fire San Luis Obispo Unit

Fire type: Wildfire

Fire name: Solar Fire

Solar Fire initially started today at 12:06 p.m. at Boulder Creek Rd and Gypsum Trl Valley in San Luis Obispo County, California.

Since its discovery four hours ago, it has burned 285 acres, an increase of 85 acres since the last update. A crew of 14 firefighters managed to contain the blaze entirely by Saturday afternoon. The cause of it is still under investigation.

Among other resources, three engines have also been deployed to fight the wildfire. 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://cameras.alertcalifornia.org/?id=Axis-CaliforniaValley1

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 firefighters have managed to get a line completely around the wildfire's perimeter 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: Cal Fire

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This story was originally published June 13, 2026 at 3:18 PM.