Environment ❯ Natural Hazards

Volcanic Activity

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

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