Connecting the dots: How climate change is fueling Western wildfires

Western wildfires are dominating headlines in June – but the media coverage focuses only on effects while ignoring a major cause. We hear about an increase in the number and intensity of wildfires. And separately, we hear about ongoing global warming, like how May was the 2nd-hottest on record globallybehind only May 2010. Why aren’t those dots being connected?

There’s compelling evidence that talking about western wildfires without mentioning climate change is like talking about lung cancer without mentioning cigarettes. I want to walk you through what’s happening out west right now, what the latest science tells us about why it’s happening, how it’s affecting people and wildlife in the region, and what we can do about it.

The Latest Major Fires
The consequences of carbon pollution are immediately apparent to residents of Colorado this week. More than 52,000 acres of forest have burned since lightning started the High Park Fire on June 9. Smoke has been wafting over Fort Collins, as stands of pines have been going up in dramatic blazes. The fire is already the second largest in the state’s history, exceeded only by the 2002 Hayman Fire. Of course, the High Park Fire is only 15% contained, so it may well take the leader spot in the days to come.

In the meantime, New Mexico is in the midst of fighting the largest wildfire in its history. The Whitewater-Baldy Complex Fire has already burned nearly 300,000 acres, mostly in the Gila National Forest. This fire comes on the heels of the Las Conchas Fire last summer, which ranked as the largest New Mexico wildfire at the time. What’s worse, heavy rainstorms after the fire was extinguished led to major flooding and erosion. Sediment and ash were washed downstream into the Rio Grande, affecting drinking water for Albuquerque, the largest city in New Mexico.

Climate change is literally fueling these and other major fires in western states. In fact, Colorado, New Mexico, Arizona, and Texas have all had fires since last year that ranked as one of the two largest in their histories (see table). The frequency and extent of fires in recent decades is unlikely to happen under natural conditions. With one catastrophic fire after another, it is clear that something quite different is happening to our forests.

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