Ruby Fire

Wildfire in Los Angeles County, September 1987

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Printed October 28, 2026 from www.firezones.info/fire/4221/ruby-fire-1987

Key facts

Started September 20, 1987
Contained September 20, 1987, after 0 days
Burned 10,093 acres
21st largest fire of 1987
Cause Miscellaneous
Open map

Where it burned

County

  1. Los Angeles County 10,093 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. 1920 Unnamed fire 105 acres in total 48 acres shared
  2. 1921 Ruby Cyn Fire 9,048 acres in total 2,277 acres shared
  3. 1921 Ruby Cyn Fire 1,001 acres in total 559 acres shared
  4. 1921 Charlie Cyn Fire 4,581 acres in total 98 acres shared
  5. 1924 Unnamed fire 24,239 acres in total 1,680 acres shared
  6. 1929 Unnamed fire 191 acres shared
  7. 1950 Boundary Fire 2,710 acres in total 806 acres shared
  8. 1950 Cienega Fire 6,682 acres in total 465 acres shared
  9. 1965 Unnamed fire 578 acres shared
  10. 1967 Brickyard Fire 5,824 acres in total 165 acres shared
  11. 1969 Unnamed fire 23 acres in total 20 acres shared
  12. 1974 Prospect/Usfs Fire 3,252 acres in total 1,257 acres shared
  13. 1980 Dam/Usfs Fire 7,848 acres in total 33 acres shared

Burned again

  1. 1996 Marple Fire 19,861 acres in total 257 acres shared
  2. 1997 Sand Fire 54 acres in total · Cause: Arson 36 acres shared
  3. 2002 Copper Fire 19,102 acres in total · Cause: Equipment use 94 acres shared
  4. 2013 Powerhouse Fire 30,268 acres in total · Cause: Miscellaneous 2,115 acres shared
  5. 2015 Warm Fire Cause: Arson 270 acres shared
  6. 2020 Lake Fire 30,999 acres in total 32 acres shared
  7. 2025 Hughes Fire 10,397 acres in total 1,177 acres shared

And 1 more fire that burned less of the same land. Acres are the land each fire shares with the Ruby 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