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% and its intensity by 6%.

Extreme weather conditions will be more common, according to the study, adding fresh urgency to a burgeoning group of climate adaptation startups.

A quick scientific study finds that human-caused climate change increased the likelihood and intensity of the hot, dry and windy conditions that fanned the flames of the devastating Southern California wildfires.