Antioch

Summary

• Fire hazard severity zones

  Share of the land in each CAL FIRE hazard class

  Map
  1. Very High 855 acres · 1 state, 854 local 4%
  2. High 3,622 acres · 2 state, 3,620 local 19%
  3. Moderate 571 acres · Local Responsibility Area 3%
  4. Non-wildland 13,288 acres · Local Responsibility Area 69%
  5. Not mapped by CAL FIRE 829 acres · Mostly federal land 4%

  19,165 acres of land in all, 3 in the State Responsibility Area and 18,333 in the Local. State zones are the ones the State Fire Marshal designated, in effect since April 1, 2024. Local zones are CAL FIRE's 2025 recommendation, which each city or county adopts by ordinance and can make stricter. How to read fire zones

• Fire history

  Fires CAL FIRE has recorded here

  Map
  1. 2025 Somersville Fire 358 acres in total · Cause: Campfire 227 acres here
  2. 2005 Con Asst 13_diamond Fire 163 acres in total · Cause: Arson 161 acres here
  3. 1979 Black Diamond Peak Fire 681 acres in total 37 acres here
  4. 2005 Con Assist 11_dolan Fire 78 acres in total · Cause: Arson 12 acres here
  5. 2024 Sardis Fire 11 acres here
  6. 2024 Sardis 2 Fire 5 acres here
  7. 2024 Wilbur Fire 2 acres here

  The most recent was the 2025 Somersville Fire, which burned 227 acres here. In all, 419 acres of Antioch have burned. Acres are the land each fire burned here, and fires that crossed less than an acre are not counted. Some older or smaller fires may be missing, and a fire perimeter can include unburned patches. How to read fire history