Update: Shore Fire in Riverside County at nearly full containment

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Updated: 7:29 a.m. June 21

First discovered: 6 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 six days, it has burned 3,085 acres. A fire crew of 291 has been working on site and they managed to contain 98% of the fire as of Sunday morning. The cause of it remains under investigation.

The firefighting efforts involve 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 it mean for a fire to be 98% contained?

The percentage indicates how much of the fire perimeter has been surrounded by a control line. In this case, it means that 98% of the wildfire is contained from spreading, while 2% 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 21, 2026 at 7:53 AM.