Special Report

50 Most Dangerous Volcanoes in America

Thomas C. Frohlich

Source: R. McGimsey (U.S. Geological Survey) / Wikimedia Commons

15. Spurr, Alaska
> Threat score: 130
> Last eruption year: 1992
> Pop. within 30 km: 0
> Pop. within 100 km: 11,097

Source: Delta Whiskey / Flickr

14. Akutan, Alaska
> Threat score: 140
> Last eruption year: 1992
> Pop. within 30 km: 233
> Pop. within 100 km: 4,361

Source: NOAA Photo Library / Flickr

13. Makushin, Alaska
> Threat score: 152
> Last eruption year: 1995
> Pop. within 30 km: 3,437
> Pop. within 100 km: 3,850

Source: thundor / Getty Images

12. Glacier Peak, Washington
> Threat score: 155
> Last eruption year: 1700
> Pop. within 30 km: 23
> Pop. within 100 km: 1,340,896

Source: Walter Siegmund / Wikimedia Commons

11. Baker, Washington
> Threat score: 156
> Last eruption year: 1880
> Pop. within 30 km: 8,568
> Pop. within 100 km: 1,990,504