Data gathered from four weeks in the fall of 2024 showed the speed of the movement to be "more than enough to put human life and infrastructure at risk," Alexander Handwerger, JPL landslide scientist said.

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.

The Palos Verdes Peninsula is well-known for its landslides, which have been occurring for decades. But radar imagery recently revealed that the Los Angeles County community is experiencing a slow-moving landslide -- averaging about 4 inches per week between Sept. 18 and Oct. 17, 2024, NASA's Jet Propulsion Laboratory found.