Mount Spurr, just to the west of the city of Anchorage, is rumbling. The Alaska Volcano Observatory has been monitoring the earthquakes, gas emissions and visible changes at Spurr and think we might be headed towards a new eruption, the volcano's first since the early 1990s. They've placed it at Yellow Alert status thanks to all the unrest since the start of 2025.
More potentially active volcanoes are located in Alaska than any other state in the US thanks to the long chain of the Aleutians that spread out from near Anchorage across the northern Pacific almost to Russia. There are also clusters of volcanoes in the Wrangell Range in eastern Alaska and near Juneau. So, with all these volcanoes, what were the state's largest eruptions in the past ~10,000 years (also known as the Holocene)?
