Simi Valley

Summary

• Fire hazard severity zones

  Share of the land in each CAL FIRE hazard class

  Map
  1. Very High 17,625 acres · 25 state, 17,600 local 65%
  2. High 1,546 acres · 1 state, 1,546 local 6%
  3. Moderate 1,139 acres · Local Responsibility Area 4%
  4. Non-wildland 6,728 acres · Local Responsibility Area 25%
  5. Not mapped by CAL FIRE 2 acres · Mostly federal land <1%

  27,039 acres of land in all, 26 in the State Responsibility Area and 27,012 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

  The 10 largest of 56 fires that burned here

  Map
  1. 1970 Clampitt Fire 115,537 acres in total · Cause: Power lines 9,340 acres here
  2. 2003 Simi Fire 107,570 acres in total 4,727 acres here
  3. 1967 Devonshire-Parker Fire 23,094 acres in total 3,420 acres here
  4. 2018 Woolsey Fire 89,551 acres in total · Cause: Power lines 3,348 acres here
  5. 1982 Hall Fire 2,648 acres in total 2,006 acres here
  6. 1941 Pacific Western Fire 1,793 acres here
  7. 1981 Oat Fire 17,787 acres in total 1,304 acres here
  8. 1967 Ditch Road Fire 1,246 acres in total 1,196 acres here
  9. 2005 Topanga Fire 23,396 acres in total 876 acres here
  10. 2019 Easy Fire 1,806 acres in total 741 acres here

  And 46 smaller fires. The most recent was the 2024 Madera Fire, which burned 2 acres here. In all, 13,834 acres of Simi Valley 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