Update: Nash Fire in San Bernardino County remains at 50% containment by Sunday morning
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: 8:39 a.m. July 5
First discovered: 3 days ago, 7:47 p.m. July 2
Initial location: Marks Road and Clay River Road, Barstow, San Bernardino County, Calif.
Fire unit: Unified Command: US Wildland Fire Service
Fire type: Wildfire
Fire name: Nash Fire
Nash Fire initially started 7:47 p.m. July 2 at Marks Road and Clay River Road, Barstow in San Bernardino County, California.
Since its discovery three days ago, it has burned 156 acres. As of Sunday morning, the fire crew effectively contained 50% of this fire. The blaze's cause remains under investigation.
See live video from the area:
Https://cameras.alertcalifornia.org/?id=Axis-ElPaso2
Fire containment
What does it mean for a fire to be 50% contained?
The percentage indicates how much of the fire perimeter has been surrounded by a control line. In this case, it means that 50% of the wildfire is halted from spreading, while 50% 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 July 5, 2026 at 9:01 AM.