Vacaville

City in Solano County

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Report created October 27, 2026 at www.firezones.info/community/81554/vacaville

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    14% High · <1% Very High

    Most of the High land is in the Local Responsibility Area, where the City of Vacaville adopts the zones CAL FIRE recommends.

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  • Fire history

    Share of the land inside a recorded wildfire perimeter

    11% has burned

    Most recently the 2020 Hennessey Fire, which burned 715 acres here, one of 8 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    20% Elevated

    Utilities may shut off power in the CPUC High Fire-Threat District in fire weather, and homes outside it can lose power when their lines run through it.

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Land by hazard class

  1. Very High 50 acres · <1 state, 49 local <1%
  2. High 2,685 acres · 19 state, 2,666 local 14%
  3. Moderate 2,899 acres · 12 state, 2,887 local 15%
  4. Non-wildland 13,631 acres · Local Responsibility Area 71%
  5. Not mapped by CAL FIRE 2 acres · Mostly federal land <1%

19,265 acres of land in all, 31 in the State Responsibility Area and 19,233 in the Local. State zones are the ones the State Fire Marshal designated, in effect since 1 April 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

Fires that burned here

  1. 1972 Cement Hill Fire Of 1,724 acres in all 861 acres
  2. 2018 Nelson Fire Of 2,158 acres in all · Cause: Miscellaneous 858 acres
  3. 2020 Hennessey Fire Of 305,352 acres in all · Cause: Lightning 715 acres
  4. 1981 Whykoff #2 Fire 392 acres
  5. 1999 Browns Fire Of 437 acres in all · Cause: Miscellaneous 192 acres
  6. 1992 Cement Fire Of 1,221 acres in all 79 acres
  7. 2004 Cement Fire Of 1,007 acres in all 13 acres
  8. 2016 Oak 2 Fire Of 59 acres in all 12 acres

In all, 2,210 acres of Vacaville 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

Sources

Fire hazard severity zones
CAL FIRE Office of the State Fire Marshal
State map published 27 June 2025, local map 2 February 2026
Fire history
CAL FIRE Fire and Resource Assessment Program
Published 28 July 2026
Power line fire risk
California Public Utilities Commission
Published 23 February 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

Nearby areas

ZIP codes in Vacaville

Neighboring communities

  1. Vacaville 14% High · <1% Very High · this area
  2. Elmira No hazard zones
  3. Fairfield 21% High
  4. Hartley 6% High