Mack Fire

Wildfire in Fresno and San Benito counties, August 1950

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Printed October 28, 2026 from www.firezones.info/fire/845/mack-fire-1950

Key facts

Started August 17, 1950
Contained Not recorded
Burned 35,381 acres
2nd largest fire of 1950
Cause Not recorded
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Where it burned

Counties

  1. Fresno County 24,402 acres
  2. San Benito County 10,974 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 again

  1. 1960 San Benito Mt. Fire 337 acres in total 36 acres shared
  2. 1979 Ciervo Fire 62,902 acres in total 15 acres shared
  3. 1985 Los Gatos #2 Fire 6,444 acres in total 158 acres shared
  4. 1987 New Idria Fire 184 acres in total · Cause: Lightning 162 acres shared
  5. 1991 Arroyo Fire Cause: Lightning 8 acres shared
  6. 2010 Coalinga Fire 22 acres in total · Cause: Debris burning 3 acres shared

Acres are the land each fire shares with the Mack 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