NewsKPBS Public MediaAugust 27, 2026San Diego
Federal data and recent investigations link human activity to majority of Western wildfires
Federal data indicates that over 75% of wildfires in the United States are human-caused, often resulting from negligence or deliberate arson. Recent investigations highlight the increasing danger posed by human-ignited fires as more people move into fire-prone wildland-urban interface areas.
Read the full story at KPBS Public MediaWhy It Matters
Residents living in fire-prone areas face increased risks as human-caused ignitions, which are often more destructive than natural fires, become more frequent due to population growth and drier environmental conditions.
Key Facts
- More than 75% of all wildfires in the U.S. are started by people.
- Human-caused fires are statistically more dangerous than natural blazes.
- Aaron Farinacci was arrested for allegedly starting the Old Trails Fire in Spokane, Washington, and confessed to starting over two dozen wildfires.
- Farinacci faces additional arson charges for four other wildfires that occurred last year.
- The Old Trails Fire destroyed hundreds of homes.
- Most of the 2.3 million acres burned in Oregon this summer were caused by lightning strikes.
- Arson incidents have generally trended downward since the 1990s.
- Climate change is contributing to drier vegetation and longer fire seasons in the American West.
- Population growth in the 'wildland-urban interface' is a primary driver of human-caused fire ignitions.
Who's Mentioned
personKelly Pohl“Researcher at Headwaters Economics”personAaron Farinacci“37-year-old suspect arrested for arson in Spokane, Washington”organizationHeadwaters Economics“Montana-based think tank providing wildfire data”personJohn Nowels“Spokane County Sheriff”personChris Matthews“Fire survivor from the Old Trails Fire”personAndrés Holz“Climate scientist at Portland State University”