National Landslide Preparedness Act Reauthorization Act of 2025

This bill reauthorizes the National Landslide Preparedness Act through 2030, updating definitions and expanding program requirements. It adds specific definitions for "atmospheric river," "atmospheric river flooding event," and "extreme precipitation event" to guide risk assessments. Key provisions require the Secretary to assess risks from these events in the national strategy, expand eligibility for grants to include Tribal organizations and Native Hawaiian groups, and dedicate $10 million of the $35 million total funding for landslide early warning systems in high-risk areas. The bill directly affects federal agencies (USGS, Commerce), state/local governments, tribes, Native Hawaiian organizations, and communities facing landslide hazards.