One month in, New Mexico’s largest-ever fire fuels anger and despair

Prescribed burns are controlled, intentional fires meant to clear vegetation and reduce the risk of disastrous wildfires, and experts say they rarely go awry. When considering a prescribed fire, authorities rely on models that take into account temperature, humidity, fuel moisture, wind speed and direction, said Timothy Ingalsbee, a former wildland firefighter and co-founder of Firefighters United for Safety, Ethics, and Ecology. Wind in particular tends to be a wild card, he said. “It’s very often that when these prescribed fires burn beyond their plan, it’s because there was a change in the wind, in wind speed or wind direction,” he said. “It’s extremely rare that it’s a matter of negligence.”