Earth Observatory - NASA Science

Research, monitoring, communication. Every day is #EarthDay at the USGS. Volcano monitoring and research conducted at the five US volcano observatories advances our understanding of active volcanoes and hazards, and enables the USGS Volcano Hazards Program to provide information and warnings of volcanic activity in the United States. Each observatory is assigned a geographic area of responsibility (Alaska, Hawaii, California, Cascade Range, Yellowstone). The observatories and their partner organ