20 most dangerous US volcanoes, ranked
20 most dangerous US volcanoes, ranked The federal government’s ranking of which volcanoes pose the most threat to the US has been more updated for the first time since 2005.
Each one gets two scores: an overall threat score and an aviation threat score.
Here are the 20 volcanoes that post the biggest risk:
5: Mount Shasta, California. Threat Score: 178. Aviation Threat: 39.
4: Redoubt volcano, Alaska. Threat Score: 201. Aviation Threat: 48.
3: Mount Rainer, Washington. Threat Score: 203. Aviation Threat: 37.
2: Mount St. Helens, Washington. Threat Score: 235. Aviation Threat: 59.
1: Kilauea volcano, Hawaii. Threat Score: 263. Aviation Threat: 48.
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