Updates on California wildfires.
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Updated: 5:08 p.m. June 18
First discovered: 6 hours ago, 11:02 a.m. June 18
Initial location: Mason Road, Green Valley, Solano County, Calif.
Fire unit: Cal Fire Sonoma-Lake-Napa Unit
Fire type: Wildfire
Fire name: Mason Fire
Mason Fire initially started today at 11:02 a.m. on Mason Road, Green Valley in Solano County, California.
Since its discovery six hours ago, it has burned 19.5 acres, an increase of 14 acres since the last update. Currently, details about the containment of the fire are unknown.
Source: Cal Fire
United Robots Sacramento
This story was originally published June 18, 2026 at 11:55 AM.