A study published Thursday has put the blame for the wildfires ravaging parts of Los Angeles on an emerging climate phenomenon: hydroclimate whiplash. This latest disaster comes on the heels of years of unprecedented weather swings, where periods of above-average rainfall are followed by extensive droughts.

At least five people were killed and more than 1,000 structures were destroyed as fierce wildfires raged in the Los Angeles area, officials said. Fast-moving flames burned through homes and businesses as residents fled smoke-filled canyons and picturesque neighborhoods that are home to many celebrities.