Update: Shore Fire in Riverside County hits 100% containment by Thursday afternoon

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Updated: 1:32 p.m. June 25

First discovered: 10 days ago, 3:23 p.m. June 15

Initial location: San Timoteo Canyon Road, S/west of Calimesa, Riverside County, Calif.

Fire unit: Cal Fire Riverside Unit

Fire type: Wildfire

Fire name: Shore Fire

Shore Fire initially started 3:23 p.m. June 15 on San Timoteo Canyon Road, S/west of Calimesa in Riverside County, California.

After being active for 10 days, it has burned 3,085 acres. As of Thursday afternoon, the blaze has been fully contained by a fire crew of 291. The cause of it remains under investigation.

The fire has been fought by 20 engines, 10 water tenders, seven 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://cameras.alertcalifornia.org/?id=Axis-DunlapAcres2

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 whole perimeter of the wildfire has been surrounded 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: Cal Fire

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This story was originally published June 25, 2026 at 1:42 PM.