Update: Nearly fully contained - Trinity Fire in San Bernardino County at 95%
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Updated: 9:30 a.m. May 3
First discovered: 45 hours ago, 11:54 a.m. May 1
Initial location: Trinity Road and Acanthus Street, Phelan, San Bernardino County, Calif.
Fire unit: Cal Fire San Bernardino Unit
Fire type: Wildfire
Fire name: Trinity Fire
Trinity Fire initially started 11:54 a.m. May 1 at Trinity Road and Acanthus Street, Phelan in San Bernardino County, California.
Since its discovery 45 hours ago, it has burned 18.6 acres. By Sunday morning, 95% of the wildfire was brought under containment. However, the cause is still under investigation.
See live video from the area:
Https://ops.alertcalifornia.org/cam-console/Axis-MtnHighEast2
Fire containment
What does it mean for a fire to be 95% contained?
Containment indicates what percentage of the fire perimeter has been surrounded by a control line. In this case, it means that 95% of the wildfire is halted from spreading, while 5% 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 3, 2026 at 8:38 AM.