Glacier Peak is the most remote of the five active volcanoes in Washington State, and more than a dozen glaciers descend its flanks, prompting its name. Quick Facts Location: Washington, Snohomish County

Glacier Peak has erupted at intervals of about 500 to 2,000 years during the past 6,000 years and at least twice during the past 2,000 years. Eruptions of 2,000 and 1,100 years ago generated fans of pyroclastic flow deposits near the volcano and lahar assemblages downstream.

Glacier Peak lies in Washington State’s North Cascade Mountains, in the heart of a wilderness area bearing its name. Its past eruptions have melted snow and ice to inundate downstream valleys with rocks, mud, and debris.

Nov 4, 2023 · Glacier Peak may not erupt within our lifetimes, but if it does its geographic impact would vary depending on the size of the eruption, wind direction, and type of hazards produced.

Nov 13, 2023 · Glacier Peak (3214 m, 10544 ft) is a stratovolcano composed mainly of dacite, which is located about 100 km (65 mi) northeast of Seattle and 110 km (70 mi) south of the International Boundary with Canada.

Nov 6, 2023 · Past eruptions have severely affected river valleys that head on Glacier Peak. Pyroclastic flows mixed with melted snow and glacial ice to form rapidly flowing slurries of rock and mud known as lahars.

Glacier Peak volcano, Washington reflected in pond below the Whitechuck Glacier, view from the south in late summer.

Nov 8, 2023 · The ability to detect and locate very small earthquakes is critical to early recognition of reawakening volcanic systems. Despite the small network and likelihood that small earthquakes have been missed, Glacier Peak is still considered one of the most seismically quiet volcanoes in the Washington and Oregon Cascades.

Nov 9, 2023 · Hazards Summary for Glacier Peak Glacier Peak tends to erupt explosively, and when the volcano reawakens the most serious hazards will impact population centers located relatively far away from the volcano.

Feb 18, 2006 · Glacier Peak (3214 m, 10544 ft) is a stratovolcano composed mainly of dacite, which is located about 100 km (65 mi) northeast of Seattle and 110 km (70 mi) south of the International Boundary with Canada.