Glacier Peak | U.S. Geological Survey Official websites use .gov .gov website belongs to an official government organization in the United States. Secure .gov websites use HTTPS lock ( or means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites. Glacier Peak Find U.S. Volcano Filters The map displays volcanoes, earthquakes, monitoring instruments, and past lava flows. Get Help Earthquake Plots To view an earthquake cross-sectional plot, click "Draw Plot" to start drawing on the map. Once the plot area is selected, click on "View Plot" to view chart or "Clear Plot" to start over. Map Layers Earthquake Colors Earthquake Depth Units Earthquake Time Units Results Filters The map displays volcanoes, earthquakes, monitoring instruments, and past lava flows. Get Help Earthquake Plots To view an earthquake cross-sectional plot, click "Draw Plot" to start drawing on the map. Once the plot area is selected, click on "View Plot" to view chart or "Clear Plot" to start over. Settings Map Layers Earthquake Colors Earthquake Depth Units Earthquake Time Units Map Legend Map Legend Results Glacier Peak Science Multimedia Publications News Connect 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 Latitude: 48.112° N Longitude: 121.113° W Elevation: 3,213 (m) 10,541 (f) Volcano type: Stratovolcano Composition: Dacite Most recent eruption: 1,100 years ago Threat Potential: Very High* *based on the National Volcano Early Warning System Summary Media Sources/Usage: Public Domain. View Media Details Glacier Peak volcano viewed from the west, Washington. The peak wasn't known by settlers to be a volcano until the 1850's, when Native Americans mentioned to naturalist George Gibbs that "another smaller peak to the north of Mount Rainier once smoked." Glacier Peak is not prominently visible from any major population center, and so its attractions, as well as its hazards, tend to be overlooked. Yet since the end of the most recent ice age, this volcano has produced some of the largest and most explosive eruptions in the conterminous United States. Within this time period, it has erupted multiple times during at least six separate episodes. Glacier Peak and Mount St. Helens are the only volcanoes in Washington State that have generated very large explosive eruptions in the past 15,000 years. Status of (mostly) Washington's Volcanoes: Report to Emergency Managers 2020-2021 June 2, 2021 Status of (mostly) Washington's Volcanoes: Report to Emergency Managers 2020-2021 Which U.S. volcanoes pose a threat? December 19, 2018 Which U.S. volcanoes pose a threat? October 22, 2018 2018 update to the U.S. Geological Survey national volcanic threat assessment 2018 update to the U.S. Geological Survey national volcanic threat assessment When erupting, all volcanoes pose a degree of risk to people and infrastructure, however, the risks are not equivalent from one volcano to another because of differences in eruptive style and geographic location. Assessing the relative threats posed by U.S. volcanoes identifies which volcanoes warrant the greatest risk-mitigation efforts by the U.S. Geological Survey and its partners... Authors John W. Ewert, Angela K. Diefenbach, David W. Ramsey By Volcano Hazards Program Volcano Science Center Agrigan Ahyi Seamount Alamagan Anatahan Asuncion Belknap Black Butte Crater Lava Field Black Rock Desert Volcanic Field Blue Lake Crater Carrizozo Lava Flow Cascade Range Weekly Update Cinnamon Butte Clear Lake Volcanic Field Coso Volcanic Field Crater Lake Craters of the Moon Volcanic Field Daikoku Seamount Davis Lake Volcanic Field Devils Garden Lava Field Diamond Craters Volcanic Field Dotsero Volcanic Center East Diamante Esmeralda Bank Farallon de Pajaros Fukujin Seamount Glacier Peak Guguan Haleakalā Hell's Half Acre Lava Field Hualālai Indian Heaven Volcanic Field Jordan Craters Volcanic Field Kama‘ehuakanaloa Kasuga 2 Kīlauea Lassen Volcanic Center Long Valley Caldera Mammoth Mountain Markagunt Plateau Volcanic Field Maug Islands Mauna Kea Mauna Loa Medicine Lake Mono Lake Volcanic Field Mono-Inyo Craters Mount Adams Mount Bachelor Mount Baker Mount Hood Mount Jefferson Mount Rainier Mount Shasta Mount St. Helens Newberry Ofu-Olosega Pagan Red Hill-Quemado Volcanic Field Ruby Salton Buttes San Francisco Volcanic Field Sand Mountain Volcanic Field Sarigan Soda Lakes South Sarigan Seamount Supply Reef Ta'u Island Three Sisters Tutuila Island Ubehebe Craters Uinkaret Volcanic Field Valles Caldera Wapi Lava Field Weekly Update West Crater Volcanic Field Yellowstone Zealandia Bank Zuni-Bandera Volcanic Field November 13, 2023 Geology and History of Glacier Peak 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. It lies in the rugged and scenic Glacier Peak Wilderness Area, in the Mt. Baker-Snoqualmie National Forest and rises only a few thousand feet above neighboring peaks that reach 2,700 m. By Cascades Volcano Observatory Glacier Peak Geology and History of Glacier Peak November 13, 2023 Geology and History of Glacier Peak 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. It lies in the rugged and scenic Glacier Peak Wilderness Area, in the Mt. Baker-Snoqualmie National Forest and rises only a few thousand feet above neighboring peaks that reach 2,700 m. November 12, 2023 Eruption History of Glacier Peak Timeline and information about past eruptions at Glacier Peak. By Cascades Volcano Observatory Glacier Peak Eruption History of Glacier Peak November 12, 2023 Eruption History of Glacier Peak Timeline and information about past eruptions at Glacier Peak. November 11, 2023 Summit of Glacier Peak The uppermost 800 m (2,600 ft) of Glacier Peak can be subdivided into three parts, two false summits and the actual summit By Cascades Volcano Observatory Glacier Peak Summit of Glacier Peak November 11, 2023 Summit of Glacier Peak The uppermost 800 m (2,600 ft) of Glacier Peak can be subdivided into three parts, two false summits and the actual summit View All Quick Facts Location: Washington, Snohomish County Latitude: 48.112° N Longitude: 121.113° W Elevation: 3,213 (m) 10,541 (f) Volcano type: Stratovolcano Composition: Dacite Most recent eruption: 1,100 years ago Threat Potential: Very High* *based on the National Volcano Early Warning System Volcanoes Hazards Program Links Assess Prepare Forecast Activity Products Observatories About Was this page helpful?