Legend

Layers

Date Started
05/21/2026 5:26 PM
Last Updated
05/21/2026 8:11 PM
Cause
Under Investigation
Incident Maps and Reports
Agency Having Jurisdiction
CAL FIRE Santa Clara Unit
Incident Management Team
No team assigned
Location
Nortonville Road and Black Diamond Road, Clayton
[37.962,-121.88]

Incident Updates

05/21/2026 6:44 PM

Forward progress has been stopped. While steep terrain and weather conditions have made containment difficult, firefighters have made good progress.

Firefighters will remain at scene and continue to implement and reinforce containment lines.

05/21/2026 6:11 PM

Air Attack is now reporting 35 to 40 acres of grass with the fire backing into the wind. Additional resources continue to respond while resources at scene work to implement containment lines.

05/21/2026 5:48 PM

Per  Air Attack, the fire is now 20-30 acres burning in the grass. Air and ground resources are working diligently to contain the fire. Additional resources are still in route.

05/21/2026 5:37 PM

New incident in Contra Costa County - Norton Fire, is currently 10 acres. 

ALERTCalifornia Camera Feed

Kregor Peak
ALERTCalifornia | UC San Diego:

Resources Assigned

  • 74
    Personnel
  • 2
    Helicopters
  • 9
    Engines
  • 2
    Dozers
  • 2
    Crews
  • 8
    Other Assigned

Numerous firefighting air tankers from throughout the State are flying fire suppression missions as conditions allow.

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