Sonoma County

Summary

• Fire hazard severity zones

  Share of the land in each CAL FIRE hazard class

  Map
  1. Very High 333,927 acres · 324,599 state, 9,327 local 33%
  2. High 286,780 acres · 273,182 state, 13,597 local 28%
  3. Moderate 254,971 acres · 196,029 state, 58,942 local 25%
  4. Non-wildland 108,696 acres · Local Responsibility Area 11%
  5. Not mapped by CAL FIRE 32,237 acres · Mostly federal land 3%

  1,016,609 acres of land in all, 793,810 in the State Responsibility Area and 190,562 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 188 fires that burned here

  Map
  1. 2019 Kincade Fire Cause: Power lines 77,236 acres here
  2. 2020 Walbridge Fire Cause: Lightning 55,209 acres here
  3. 2017 Nuns Fire 55,798 acres in total 35,818 acres here
  4. 1964 C. Hanly Fire 55,961 acres in total 33,036 acres here
  5. 2017 Tubbs Fire 36,702 acres in total 31,920 acres here
  6. 2020 Glass Fire 67,484 acres in total 26,876 acres here
  7. 2017 Pocket Fire 17,351 acres here
  8. 1965 P.g.& E.#10 Fire 13,172 acres here
  9. 2004 Geysers Fire 12,244 acres in total · Cause: Equipment use 11,616 acres here
  10. 1988 Unnamed fire 11,380 acres here

  And 178 smaller fires. The most recent was the 2024 Point Fire, which burned 1,205 acres here. In all, 345,766 acres of Sonoma County 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