Update: 75% containment reached for 1st Fire in Riverside County

The creation of this content included the use of AI based on templates created, reviewed and edited by journalists in the newsroom. Read more on our AI policy here.

Updated: 1:41 p.m. May 8

First discovered: 3 hours ago, 10:36 a.m. May 8

Initial location: East 1st Street and Avenue, Beaumont, Riverside County, Calif.

Fire unit: Cal Fire Riverside Unit

Fire type: Wildfire

Fire name: 1st Fire

1st Fire initially started today at 10:36 a.m. at East 1st Street and Avenue, Beaumont in Riverside County, California.

After being active for three hours, it has burned 13 acres. As of Friday afternoon, a fire crew of 32 succeeded in containing 75% of the fire. The cause of it is still under investigation.

Nine engines and one water tender are all continuing to fight the fire. According to Cal Fire, "Numerous firefighting air tankers from throughout the State are flying fire suppression missions as conditions allow."

Fire containment

What does it mean for a fire to be 75% contained?

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

United Robots Sacramento

This story was originally published May 8, 2026 at 1:37 PM.