The land under the Palos Verdes Peninsula has been sliding for decades. New data from NASA shows just how bad the problem is.

An analysis by NASA’s Jet Propulsion Laboratory has determined that during a four-week period in fall 2024, land in some areas of Rancho Palos Verdes’ landslide area slid toward the ocean by as much as 4 inches per week.

A coastal community in Southern California is shifting downslope toward the Pacific Ocean at a rapid rate, according to NASA.