• Axial Seamount showing signs of approaching eruption as magma builds up off Oregon coast

    Axial Seamount, an underwater volcano off the Pacific Northwest coast, could erupt soon for the first time in a decade. Scientists at the University of Washington have detected a sharp increase in small undersea earthquakes and seafloor inflation — signs of magma buildup within the volcano. Despite the activity, experts say there is no threat to coastal communities. The site remains under constant observation through one of the world’s most advanced ocean monitoring systems.

  • Volcanic unrest persists at Mount Spurr with elevated seismicity and surface deformation, Alaska

    Volcanic unrest continues at Mount Spurr, Alaska, with elevated seismic activity, surface deformation, persistent gas emissions, and visible summit steaming. The current unrest indicates that new magma has intruded into the Earth’s crust beneath the volcano and that the probability of an eruption has increased. The last known eruption at this volcano took place in 1992 (VEI 4).

  • Increased likelihood of eruption at Mount Spurr, Alaska

    The likelihood of an eruption at Mount Spurr has increased with gas emissions recorded on March 7 and 11, confirming ongoing volcanic unrest. The volcano is located about 120 km (75 miles) west of Anchorage (population 286 000), Alaska.

  • Increased seismic activity and ground inflation at Mount Spurr, Alaska

    Mount Spurr in Alaska remains in a state of volcanic unrest, with AVO detecting numerous shallow earthquakes on February 13, 2025, likely caused by magma movement beneath the volcano. While an eruption is not expected in the near term, ongoing activity suggests one could occur in the future, most likely at Crater Peak, which erupted explosively in 1953 and 1992.

  • Hidden magma discovered beneath dormant Cascade Range volcanoes

    New research has found magma reservoirs beneath dormant volcanoes in the Cascade Range remain intact for thousands of years, challenging the long-standing belief that magma bodies dissipate over time after eruptions and reshaping understanding of volcanic activity. Previously, large magma bodies were thought to indicate an increased likelihood of eruption, but the study suggests they are a persistent feature of volcanic systems rather than a sign of imminent activity.