Walbridge Fire

Wildfire in Sonoma County, August 2020

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Printed October 28, 2026 from www.firezones.info/fire/8139/walbridge-fire-2020

Key facts

Started August 17, 2020
Contained September 11, 2020, after 25 days
Burned 55,209 acres
16th largest fire of 2020
Cause Lightning
Buildings 293 destroyed, 25 damaged
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Where it burned

County

  1. Sonoma County 55,209 acres

Community

  1. Guerneville 787 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.

Buildings damaged

  1. Destroyed Over 50% damaged 293
  2. Major damage 25 to 50% damaged 1
  3. Minor damage 10 to 25% damaged 4
  4. Affected Up to 10% damaged 20

Buildings CAL FIRE inspected after the fire, by how badly each was damaged. Inspectors record homes, businesses and outbuildings within 100 meters of the fire, and cannot always reach every one, so the counts can differ slightly from other reports.

The same land, other fires

Burned before

  1. 1944 Unnamed fire 7,598 acres in total 5,600 acres shared
  2. 1944 Unnamed fire 1,875 acres shared
  3. 1945 Unnamed fire 1,671 acres in total 1,240 acres shared
  4. 1946 Unnamed fire 3,284 acres in total 2,300 acres shared
  5. 1948 Unnamed fire 1,046 acres in total 417 acres shared
  6. 1949 Unnamed fire 821 acres shared
  7. 1949 Unnamed fire 597 acres shared
  8. 1955 Palmer Creek Fire 1,400 acres shared
  9. 1959 Unnamed fire 1,122 acres in total 593 acres shared
  10. 1959 Wine Creek Fire 2,042 acres in total 800 acres shared
  11. 1959 Mccray Ridge Fire 1,225 acres shared
  12. 1960 Unnamed fire 2,375 acres in total 241 acres shared
  13. 1964 Mill Creek Fire 367 acres shared
  14. 1972 Bradford Mt. Fire 1,781 acres in total 3 acres shared
  15. 1986 Willow Springs Fire 297 acres shared
  16. 2007 Armstrong Fire Cause: Arson 24 acres shared
  17. 2011 Old Fire Cause: Miscellaneous 29 acres shared

Acres are the land each fire shares with the Walbridge 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