Updates on California wildfires.
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Updated: 7:04 p.m. July 19
First discovered: 65 hours ago, 1:14 a.m. July 17
Initial location: Morgan Territory Road and Marsh Creek Road, Mt. Diablo, Contra Costa County, Calif.
Fire unit: Cal Fire Santa Clara Unit
Fire type: Wildfire
Fire name: Morgan Fire
Morgan Fire initially started 1:14 a.m. July 17 at Morgan Territory Road and Marsh Creek Road, Mt. Diablo in Contra Costa County, California.
By Sunday evening, it had destroyed 50.8 acres. As of Sunday evening, the fire crew succeeded in containing 90% of the fire. There is currently no information on the cause of the fire.
Fire containment
What does it mean for a fire to be 90% contained?
Containment indicates what percentage 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
United Robots Sacramento
This story was originally published July 19, 2026 at 7:21 PM.