The Alaska Volcano Observatory (AVO) is a joint program of the

United States Geological Survey The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, ...

, the Geophysical Institute of the

University of Alaska Fairbanks The University of Alaska Fairbanks (UAF or Alaska) is a public land-grant research university in College, Alaska, a suburb of Fairbanks. It is the flagship campus of the University of Alaska system. UAF was established in 1917 and opened for ...

, and the State of Alaska Division of Geological and Geophysical Surveys (ADGGS).dggs.alaska.gov
/ref> AVO was formed in 1988, and uses federal, state, and university resources to monitor and study

Alaska Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S ...

volcanology Volcanology (also spelled vulcanology) is the study of volcanoes, lava, magma and related geological, geophysical and geochemical phenomena (volcanism). The term ''volcanology'' is derived from the Latin word '' vulcan''. Vulcan was the a ...

, hazardous

volcano A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates ...

es, to predict and record eruptive activity, and to mitigate volcanic hazards to life and property. The Observatory website allows users to monitor active volcanoes, with

seismographs A seismometer is an instrument that responds to ground noises and shaking such as caused by earthquakes, Types of volcanic eruptions, volcanic eruptions, and explosions. They are usually combined with a timing device and a recording device to f ...

and

webcamera A webcam is a video camera which is designed to record or stream to a computer or computer network. They are primarily used in videotelephony, livestreaming and social media, and Closed-circuit television, security. Webcams can be built-in compute ...

s that update regularly. AVO now monitors more than 20 volcanoes in

Cook Inlet Cook Inlet ( tfn, Tikahtnu; Sugpiaq: ''Cungaaciq'') stretches from the Gulf of Alaska to Anchorage in south-central Alaska. Cook Inlet branches into the Knik Arm and Turnagain Arm at its northern end, almost surrounding Anchorage. On its ...

, which is close to Alaskan population centers, and the Aleutian Arc due to the hazard that plumes of ash pose to aviation. AVO operates out of two locations. One is at the U.S. Geological Survey office on the campus of Alaska Pacific University in

Anchorage Anchorage () is the largest city in the U.S. state of Alaska by population. With a population of 291,247 in 2020, it contains nearly 40% of the state's population. The Anchorage metropolitan area, which includes Anchorage and the neighboring ...

.Alaska Volcano Observatory - About AVO
Retrieved Dec. 1, 2022.United States Geological Survey, USGS - Alaska Volcano Observatory
Retrieved Dec. 1, 2022.Alaska Pacific University Campus Map
Retrieved May 11, 2018. Other AVO offices are at the Geophysical Institute of the University of Alaska in

Fairbanks Fairbanks is a home rule city and the borough seat of the Fairbanks North Star Borough in the U.S. state of Alaska. Fairbanks is the largest city in the Interior region of Alaska and the second largest in the state. The 2020 Census put the ...

.University of Alaska Fairbanks, Geophysical Institute - Campus Facilities
Retrieved Dec. 1, 2022.

Monitored volcanoes

The following list shows volcanoes regularly monitored by the Alaska Volcano Observatory using activity detection instruments. While the majority of these volcanoes are in remote locations and would only pose a threat to aviation, there are a few in some areas that could have an impact on populated communities.Alaska Volcano Observatory - Current Volcanic Activity
Retrieved Nov. 30, 2022. * Akutan Peak on

Akutan Island Akutan Island ( ale, Akutanax̂; russian: Акутан) is an inhabited island in the Fox Islands group of the eastern Aleutian Islands in the Aleutians East Borough of Alaska. Geography The island is approximately 18 mi (30 km) in ...

in the Fox Islands group *

Aniakchak Crater Mount Aniakchak (russian: Аниакчак) is a 3,700-year-old volcanic caldera approximately in diameter, located in the Aleutian Range of Alaska, United States. Although a stratovolcano by composition, the pre-existing mountain collapsed in a ...

Aniakchak National Monument and Preserve Aniakchak National Monument and Preserve is a U.S. National Monument and National Preserve, consisting of the region around the Aniakchak volcano on the Aleutian Range of south-western Alaska. The monument is one of the least-visited places in ...

on the Alaska Peninsula *

Atka Volcanic Complex Korovin Volcano is one of four volcanic centers of the Atka Volcanic Complex, located near the town of Atka on the northeast part of Atka Island in the Aleutian Islands chain, Alaska, United States.

Atka Island Atka Island ( ale, Atx̂ax̂, russian: Атка остров) is the largest island in the Andreanof Islands of the Aleutian Islands of Alaska. The island is east of Adak Island. It is long and wide with a land area of , making it the 22nd ...

in the

Andreanof Islands The Andreanof Islands ( ale, Niiĝuĝim tanangis, russian: Андреяновские острова) are a group of islands in the Aleutian Islands in southwestern Alaska. They are located at about 52° North and 172°57' to 179°09' West. Geogr ...

group (includes Kliuchef, Konia, Korovin and Sarichef volcanoes) * Augustine Volcano on Augustine Island in the

* Fisher Caldera on Unimak Island in the Fox Islands group *

Great Sitkin Volcano Great may refer to: Descriptions or measurements * Great, a relative measurement in physical space, see Size * Greatness, being divine, majestic, superior, majestic, or transcendent People * List of people known as "the Great" *Artel Great (born ...

on Great Sitkin Island in the Andreanof Islands group * Iliamna Volcano in the Chigmit Mountains within Lake Clark National Park and Preserve *

Isanotski Peaks Isanotski Peaks or Isanotski Volcano, known locally as "Ragged Jack", is a multipeaked mountain on Unimak Island, the easternmost Aleutian Island in Alaska, United States. It is an old, highly dissected stratovolcano, lying about 10 miles (16 ...

on Unimak Island in the Fox Islands group *

Kanaga Volcano Kanaga Volcano, or Mount Kanaga, is a stratovolcano at the northern tip of Kanaga Island in the Aleutian Islands, Alaska.Kanaga Island in the Andreanof Islands group * Little Sitkin Volcano on Little Sitkin Island in the Rat Islands group * Makushin Volcano on

Unalaska Island Unalaska ( ale, Nawan-Alaxsxa, russian: Уналашка) is a volcanic island in the Fox Islands group of the Aleutian Islands in the US state of Alaska located at . The island has a land area of . It measures long and wide. The city of Una ...

in the Fox Islands group * Mount Cleveland on Chuginadak Island in the

Islands of Four Mountains Islands of Four Mountains (russian: Четырёхсопочные острова) is an island grouping of the Aleutian Islands in Alaska, United States. The chain includes, from west to east, Amukta, Chagulak, Yunaska, Herbert, Carlisle, Chu ...

group * Mount Dutton on the Alaska Peninsula near Cold Bay *

Mount Gareloi Mount Gareloi, or Gareloi Volcano, is a stratovolcano in the Aleutian Islands of Alaska, United States, about from Anchorage. Gareloi is located on Gareloi Island, and comprises most of its land mass. The island also has two small glaciers whic ...

Gareloi Island Gareloi (russian: Горелый) or Anangusook ( ale, Anangusix̂) is a volcanic island in the Delarof Islands of the Aleutian Islands of Alaska. It is located between the Tanaga Pass and the Amchitka Pass. The island is in length and wide. ...

in the Andreanof Islands group *

Mount Griggs Mount Griggs, formerly known as Knife Peak Volcano, is a stratovolcano, which lies 10 km behind the volcanic arc defined by other Katmai group volcanoes. Although no historic eruptions have been reported from Mount Griggs, vigorously active ...

in the Kejulik Mountains within

Katmai National Park and Preserve Katmai National Park and Preserve is an American national park and preserve in southwest Alaska, notable for the Valley of Ten Thousand Smokes and for its brown bears. The park and preserve encompass , which is between the sizes of Connecticut ...

* Mount Katmai in the Kejulik Mountains within Katmai National Park and Preserve *

Mount Mageik Mount Mageik is a stratovolcano on the Alaska Peninsula. It has no confirmed historical eruptions (one in 1946 is now deemed questionable), but its youngest eruptive products are apparently Holocene in age (8750 to 500 BCE). A young crater lies ...

in the Kejulik Mountains within Katmai National Park and Preserve * Mount Martin in the Kejulik Mountains within Katmai National Park and Preserve * Mount Peulik on the Alaska Peninsula near Becharof Lake * Mount Spurr in the

Alaska Range The Alaska Range is a relatively narrow, 600-mile-long (950 km) mountain range in the southcentral region of the U.S. state of Alaska, from Lake Clark at its southwest endSources differ as to the exact delineation of the Alaska Range. ThBo ...

near Anchorage *

Mount Veniaminof Mount Veniaminof (russian: Вулкан Вениаминова) is an active stratovolcano on the Alaska Peninsula. The mountain was named after Ioann (Ivan Popov) Veniaminov (1797–1879), a Russian Orthodox missionary priest (and later a pro ...

on the Alaska Peninsula near Perryville * Mount Wrangell in the Wrangell Mountains of southeastern Alaska * Novarupta in the Kejulik Mountains within Katmai National Park and Preserve *

Okmok Caldera Mount Okmok is the highest point on the rim of Okmok Caldera (Unmagim Anatuu in Aleut language, Aleut) on the northeastern part of Umnak Island in the eastern Aleutian Islands of Alaska. This wide circular caldera truncates the top of a large shi ...

on Umnak Island in the Fox Islands group *

Pavlof Volcano Pavlof may refer to: * Pavlof Bay, a bay in Alaska, United States * Mount Pavlof, a volcano in Alaska, United States * Pavlof Sister, a volcano in Alaska, United States See also * Pavlov (disambiguation) {{geodis