A new study finds that atmospheric rivers — the heavy rain and wind events most known for dousing California and other parts of the West — have been getting bigger, wetter and more frequent in the past 45 years as the world warms.

The mountains have a higher chance of rainfall, meaning an elevated chance of significant flooding or debris flows near recent burn scars. Those that could be at risk include areas that burned in the Palisades, Hurst, Kenneth, Sunset and Eaton fires.