Skip to main content
U.S. flag

An official website of the United States government

Multi-scale fire triangle: Fire growth and complexity

Detailed Description

There are three fire-related triangles used to explain fire growth and expansion. The smallest scale "Fire Triangle" factors in oxygen, heat, and fuel. The "Fire Behavior Triangle" factors in topography, fuel, and weather. While the large-scale "Fire Regime Triangle" factors in ignition source, vegetation, and climate.


Public Domain.