Lake Forest

Summary

• Fire hazard severity zones

  Share of the land in each CAL FIRE hazard class

  Map
  1. Very High 3,561 acres · 5 state, 3,557 local 33%
  2. High 395 acres · Local Responsibility Area 4%
  3. Moderate 343 acres · Local Responsibility Area 3%
  4. Non-wildland 6,448 acres · Local Responsibility Area 60%

  10,747 acres of land in all, 5 in the State Responsibility Area and 10,742 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. 1926 Unnamed fire 9,935 acres in total 3,298 acres here
  2. 2007 Santiago Fire 28,430 acres in total · Cause: Miscellaneous 1,880 acres here
  3. 2020 Silverado Fire 12,469 acres in total 562 acres here
  4. 1970 El Toro Fire 412 acres here
  5. 1919 Unnamed fire 2,225 acres in total 267 acres here
  6. 1931 Unnamed fire 7,760 acres in total 261 acres here
  7. 1984 Modjeska Fire 1,018 acres in total 145 acres here
  8. 1970 Nelson Fire 3,586 acres in total · Cause: Miscellaneous 27 acres here
  9. 2000 Whiting Fire Cause: Arson 11 acres here
  10. 1997 Santiago Fire 338 acres in total · Cause: Vehicle 1 acre here

  The most recent was the 2020 Silverado Fire, which burned 562 acres here. In all, 4,143 acres of Lake Forest 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