Simi Fire

Wildfire in Ventura and Los Angeles counties, October 2003

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Printed October 28, 2026 from www.firezones.info/fire/5997/simi-fire-2003

Key facts

Started October 25, 2003
Contained Not recorded
Burned 107,570 acres
2nd largest fire of 2003 and 45th largest in California's records
Cause Not recorded
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Where it burned

Counties

  1. Ventura County 85,125 acres
  2. Los Angeles County 22,441 acres

Communities

  1. Simi Valley 4,727 acres
  2. Moorpark 3,046 acres
  3. Stevenson Ranch 854 acres
  4. Santa Paula 167 acres
  5. Santa Clarita 51 acres

Acres are the land the fire burned in each county and community, and places where it burned less than an acre are not listed. Communities are cities, towns and the unincorporated places the Census Bureau names, so land outside any of them is counted only in its county.

The same land, other fires

Burned before

  1. 1940 Townley Cyn-Pico Cyn Fire 6,532 acres in total 5,889 acres shared
  2. 1946 Wiley Canyon Fire 21,266 acres in total 19,686 acres shared
  3. 1953 Shields Lease Fire 11,775 acres in total 10,438 acres shared
  4. 1957 Santa Susana Pass Fire 4,734 acres in total 2,826 acres shared
  5. 1958 Calumet Canyon Fire 17,214 acres in total 14,865 acres shared
  6. 1962 Golden Fire 9,233 acres in total 2,871 acres shared
  7. 1962 Culbert Fire 5,314 acres in total 5,260 acres shared
  8. 1967 Sence Ranch Fire 18,354 acres in total 15,739 acres shared
  9. 1970 Clampitt Fire 115,537 acres in total · Cause: Power lines 69,821 acres shared
  10. 1971 Sence Ranch Brush #2 Fire 2,809 acres shared
  11. 1981 Oat Fire 17,787 acres in total 7,663 acres shared
  12. 1984 Grimes Fire 11,305 acres in total 9,384 acres shared
  13. 1986 Bradley Fire 9,229 acres in total 9,041 acres shared
  14. 1988 Keuhner Fire 3,819 acres in total 3,541 acres shared
  15. 1999 Bradley Incident Fire 3,332 acres in total 3,293 acres shared

Burned again

  1. 2006 Shekell Fire 13,618 acres in total 8,915 acres shared
  2. 2008 Sesnon Fire 14,701 acres in total 8,221 acres shared
  3. 2009 Guiberson Fire 17,452 acres shared
  4. 2019 Maria Fire 10,043 acres in total 9,793 acres shared
  5. 2024 Mountain Fire 19,902 acres in total 16,571 acres shared

And 104 more fires that burned less of the same land. Acres are the land each fire shares with the Simi Fire, and fires that shared 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

Sources

Fire history
CAL FIRE Fire and Resource Assessment Program
Published 28 July 2026
Building damage
CAL FIRE Damage Inspection
Updated 19 October 2026

This site is independent and not affiliated with CAL FIRE or the CPUC, so for an official determination, check with the agency or your city or county. How we read the data