The National Science Foundation Division of Earth Sciences awarded the University of California, Davis $166,975 on October 1, 2025, under the Geosciences program (CFDA 47.050) to detect and analyze small earthquakes associated with the Rattlesnake Ridge landslide near Yakima, Washington, and develop operational repeating signal detectors that advance understanding of landslide dynamics and failure processes. The research leverages a unique seismic dataset collected as the active landslide—a 3 million cubic meter mass that destabilized beginning in late October 2017—accelerated downslope. The project will perform comprehensive seismic analysis including earthquake detection, location determination, cross-correlation to identify repeating events, and comparison of spatiotemporal seismicity distribution against geodetic data recording slide motion. Work is performed at UC Davis, Davis, California, with a period of performance extending from October 1, 2025, through July 31, 2026. The project includes community engagement with the Yakama Nation, whose tribal lands host the landslide, through tribal council briefings and field trips for students at Heritage University and tribal schools to deepen regional understanding of landslide hazards. The award supports one graduate student.