California's Wildfires Show No Signs of Slowing Down

[Think. Again.]

1. More from the article...

However, while the winds aren’t unseasonal, climate change is increasing the risk of late- or early-season wildfires in California. “This is not only a particularly strong wind event, but is also a particularly dry season here in the beginning of January,” says Diffenbaugh. Southern California’s wet season, which runs from October through April, has seen record low precipitation, following one of the driest falls on record. As precipitation is more variable due to climate change, the overlap between the windy season and the dry season is increasing. “We’re seeing a significant amount of more, hot, dry, windy days, especially in Southern California,” says Trudeau.

Adding to the problem, the two previous years saw above-normal precipitation, leading to growth of vegetation and foliage in the mountain regions. “That was priming the land, so to speak,” says Moreland. “All that vegetation has now cured and is more flammable, and we’re seeing easier ignitions, more rapid fire spread.” The proximity to people and structures compounds the risks: “The houses intermixed with the vegetation is what’s so problematic because, in this case, the houses are providing a lot of the fuel,” says Marlon.

Plus, all of these events are occurring against a backdrop of warmer annual temperatures due to climate change. “Just boosting that background temperature a little bit can allow fires to rapidly escalate,” says Marlon.