Environment ❯ Natural Hazards

Volcanic Activity

Impact on Communities Seismic Activity Magma Dynamics Ashfall Impact Risk Analysis Tsunamis Hawaiian Volcanic Activity Ashfall Effects Pazifischer Feuerring Terrain Risks Safety Regulations Geological Risks Risk Assessment Volcanic Safety Gas Emissions Eruption Events Lahars Impact on Ecosystems Tectonic Plates Hazard Mitigation Earthquakes Pacific Ring of Fire Impact on Urban Areas Kamchatka Volcanoes Terrain Challenges Mount St. Helens Ring of Fire

Mount St. Helens, 46 Years Later, Is Quiet Under Watch

Expanded sensors give early warning that supports a continued green alert.

Hawaiʻi Man Dies After Entering Closed Area Near Kīlauea Caldera, NPS Says

Repeated Falls on Mount Rinjani Prompt Safety Overhaul