Flooding is the most common natural disaster in King County. Scientists expect that La Niña, a natural weather pattern of cooler and wetter weather, will happen this fall and winter, creating the potential for an active flood season in the region from October through April.

Typically, La Niña lasts for one or two years, but the most recent La Niña lasted from 2020 to 2023, which was unusual. There were some moderate to high flood events during those years that resulted in major damage to homes, businesses, roads, and other important infrastructure in King County. Even minor flooding can lead to big disruptions such as closing roads and requiring costly clean-up and repairs to property.

It is hard to predict natural disasters, and climate change makes it even harder. Protect your loved ones, pets, community, and yourself by knowing your flood risk and making a plan for flood season. Learn more.