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How dangerous are pyroclastic flows?

Pyroclastic flows can be extremely destructive and deadly because of their high temperature and mobility. During the 1902 eruption of Mont Pelee (Martinique, West Indies), for example, a nuee ardente demolished the coastal city of St. Pierre, killing nearly 30,000 inhabitants.

Tilling, R.I., Topinka, L.J., and Swanson, D.A., 1990, Eruptions of Mount St. Helens: Past, Present, and Future​: U.S. Geological Survey General Interest Publication, 56 p.

Tags: Geothermal Resources, Earthquakes, Tectonics, Monitoring, Volcanoes, Lava, Seismicity, Ring of Fire