
Wildfires are not only getting larger—they are getting faster. Recent research examining more than 60,000 fires across the contiguous United States found that the fastest-growing fires have accelerated dramatically over the past two decades. While these fast-moving fires represent a relatively small fraction of wildfires, they account for a disproportionate share of homes destroyed and total suppression costs.
When fires move quickly, time becomes a critical dimension of risk. Evacuation windows shrink, suppression becomes more difficult, and communities have less time to respond. Yet wildfire science and risk assessments have traditionally focused much more on how large or severe fires become than on how quickly they grow.