Update: Nearly fully contained - Custer Fire in San Bernardino County now at 90%
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Updated: 7:06 a.m. June 14
First discovered: 17 hours ago, 1:40 p.m. June 13
Initial location: 9075 Custer Ave. Lucerne, San Bernardino County, Calif.
Fire unit: Cal Fire San Bernadino Unit
Fire type: Wildfire
Fire name: Custer
Custer Fire initially started 1:40 p.m. June 13 in 9075 Custer Ave. Lucerne in San Bernardino County, California.
After being active for 17 hours, it has burned 28 acres. A fire crew of 175 has been working on site and they managed to contain 90% of the fire as of Sunday morning. The cause is, however, still being investigated.
Firefighting efforts include 22 engines, three water tenders, two helicopters, two dozers and four hand crews. 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 90% contained?
The percentage indicates how much of the fire perimeter has been surrounded by a control line. In this case, it means that 90% of the wildfire is halted from spreading, while 10% 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 14, 2026 at 7:32 AM.