Tuesday's report, too rapid for peer-review yet, found global warming boosted the likelihood of high fire weather conditions in this month's fires by 35 percent and its intensity by 6 percent.

Human-caused climate change made the Los Angeles-area fires more likely and more destructive, according to a study out Tuesday. Why it matters: The study — from an international group of 32 climate researchers — shows how climate change fits into the myriad factors that made the multiple blazes one of California's most destructive and expensive wildfire disasters on record.