| Country | United States |
| Volcanic Region | Aleutian Ridge Volcanic Arc |
| Landform | Volc Type | Composite | Stratovolcano |
| Last Known Eruption | 1830 CE |
| Coordinates | 54.65°N, 164.43°W |
| Elevation | 1,112 m (3,648 ft) |
| Volcano Number | 311350 |
 Google Earth Placemark with Features
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 Cite Volcano Profile
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Cite this Report
The Alaska Volcano Observatory (AVO) reported that power to seismic monitoring instruments at Fisher had been restored following a failure which affected the ability to receive data. At 1118 on 9 March the Volcano Alert Level was moved to Normal and the Aviation Color Code was moved to Green.
Source: US Geological Survey Alaska Volcano Observatory (AVO)
The Global Volcanism Program has no Bulletin Reports available for Fisher.
Cite this Report
The Alaska Volcano Observatory (AVO) reported that power to seismic monitoring instruments at Fisher had been restored following a failure which affected the ability to receive data. At 1118 on 9 March the Volcano Alert Level was moved to Normal and the Aviation Color Code was moved to Green.
Source: US Geological Survey Alaska Volcano Observatory (AVO)
Cite this Report
The Alaska Volcano Observatory (AVO) reported that a power failure affected the ability to receive seismic monitoring data from instruments around Fisher volcano. Although some data from other stations on Unimak Island were unaffected, the data did not provide enough information to confirm that the volcano was at normal background activity. At 1420 on 2 March both the Aviation Color Code and Volcano Alert Level were lowered to Unassigned.
Source: US Geological Survey Alaska Volcano Observatory (AVO)
The Global Volcanism Program has no Bulletin Reports available for Fisher.
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There is data available for 6 confirmed eruptive periods.
1830 Aug 16 ± 15 days Confirmed Eruption (Explosive / Effusive) VEI: 2 (?)
| Episode 1 | Eruption (Explosive / Effusive) | Mount Finch | ||||||||||||||||||
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| 1830 Aug 16 ± 15 days - Unknown | Evidence from Observations: Reported | ||||||||||||||||||
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List of 2 Events for Episode 1 at Mount Finch
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1826 Oct 11 - 1827 Jan 16 (?) ± 15 days Confirmed Eruption (Explosive / Effusive) VEI: 3
| Episode 1 | Eruption (Explosive / Effusive) | Mount Finch | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1826 Oct 11 - 1827 Jan 16 (?) ± 15 days | Evidence from Observations: Reported | ||||||||||||||||||||||||||||
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List of 4 Events for Episode 1 at Mount Finch
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1795 (in or before) Confirmed Eruption (Explosive / Effusive)
| Episode 1 | Eruption (Explosive / Effusive) | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1795 (in or before) - Unknown | Evidence from Observations: Reported | |||||||||||||
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List of 1 Events for Episode 1
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0400 ± 50 years Confirmed Eruption (Explosive / Effusive)
| Episode 1 | Eruption (Explosive / Effusive) | Turquoise cone | |||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0400 ± 50 years - Unknown | Evidence from Isotopic: 14C (uncalibrated) | |||||||||||||||||||||||||||||||||
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List of 5 Events for Episode 1 at Turquoise cone
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3170 BCE ± 75 years Confirmed Eruption (Explosive / Effusive) VEI: 5
| Episode 1 | Eruption (Explosive / Effusive) | Turquoise cone | ||||||||||||||||||||||||||||
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| 3170 BCE ± 75 years - Unknown | Evidence from Isotopic: 14C (uncalibrated) | ||||||||||||||||||||||||||||
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List of 4 Events for Episode 1 at Turquoise cone
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7420 BCE ± 200 years Confirmed Eruption (Explosive / Effusive) VEI: 6 (?)
| Episode 1 | Eruption (Explosive / Effusive) | NE and SW parts of Fisher caldera | ||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 7420 BCE ± 200 years - Unknown | Evidence from Isotopic: 14C (uncalibrated) | ||||||||||||||||||||||||||||||||||||||||||||||||
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List of 8 Events for Episode 1 at NE and SW parts of Fisher caldera
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This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.
Synonyms |
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| Metrogoon Lake | ||||
Cones |
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| Feature Name | Feature Type | Elevation | Latitude | Longitude |
| Eastern Mound | Stratovolcano | |||
| Eickelberg Peak | Stratovolcano | 1094 m | ||
| Finch, Mount | Stratovolcano | 477 m | 54° 40' 0.00" N | 164° 22' 0.00" W |
| Neptune Cone | Stratovolcano | |||
| Nick's Cone | Cone | |||
| Turquoise Cone | Stratovolcano | |||
Craters |
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| Feature Name | Feature Type | Elevation | Latitude | Longitude |
| Pyro Hill | Maar | |||
An almost constant steam plumes pours down the north flank of Shishaldin volcano, the highest in the Aleutian Islands. The symmetrical volcano is the most prominent landmark on Unimak Island and is referred to by the Aleut Indians as Sisquk, meaning "mountain which points the way when I am lost." A large monogenetic cinder cone field is found on the NW flank of the basaltic volcano. The two large lakes in the distance are within Fisher caldera, a low-lying volcanic structure to the SW.
This 1974 view shows part of the interior of Fisher caldera on Unimak Island in the eastern Aleutian Islands. Fisher is an 11 x 18 km caldera that formed about 9,100 years ago during the eruption of pyroclastic flows that overtopped topographic barriers more than 500 m high. The caldera contains several lakes, maars, and other vents.The following 11 samples associated with this volcano can be found in the Smithsonian's NMNH Department of Mineral Sciences collections, and may be availble for research (contact the Rock and Ore Collections Manager). Catalog number links will open a window with more information.
| Catalog Number | Sample Description | Lava Source | Collection Date |
|---|---|---|---|
| NMNH 117233-174 | Pumice | -- | -- |
| NMNH 117233-175 | Pumice | -- | -- |
| NMNH 117233-176 | Pumice | -- | -- |
| NMNH 117233-177 | Volcanic Bomb | -- | -- |
| NMNH 117233-178 | Tuff | -- | -- |
| NMNH 117233-179 | Pumice | -- | -- |
| NMNH 117233-181 | Pumice | -- | -- |
| NMNH 117233-182 | Glass | -- | -- |
| NMNH 117233-185 | Pumice | -- | -- |
| NMNH 117233-186 | Obsidian | -- | -- |
| NMNH 117233-187 | Obsidian | -- | -- |
| Alaska Volcano Observatory (Link to Fisher) | The Alaska Volcano Observatory (AVO) is a joint program of the U.S. Geological Survey (USGS), the Geophysical Institute of the University of Alaska Fairbanks (UAFGI), and the State of Alaska Division of Geological and Geophysical Surveys (ADGGS). AVO was formed in 1988, and uses federal, state, and university resources to monitor and study Alaska's hazardous volcanoes, to predict and record eruptive activity, and to mitigate volcanic hazards to life and property. |
| Copernicus Browser | The Copernicus Browser replaced the Sentinel Hub Playground browser in 2023, to provide access to Earth observation archives from the Copernicus Data Space Ecosystem, the main distribution platform for data from the EU Copernicus missions. |
| MIROVA | Middle InfraRed Observation of Volcanic Activity (MIROVA) is a near real time volcanic hot-spot detection system based on the analysis of MODIS (Moderate Resolution Imaging Spectroradiometer) data. In particular, MIROVA uses the Middle InfraRed Radiation (MIR), measured over target volcanoes, in order to detect, locate and measure the heat radiation sourced from volcanic activity. |
| MODVOLC Thermal Alerts | Using infrared satellite Moderate Resolution Imaging Spectroradiometer (MODIS) data, scientists at the Hawai'i Institute of Geophysics and Planetology, University of Hawai'i, developed an automated system called MODVOLC to map thermal hot-spots in near real time. For each MODIS image, the algorithm automatically scans each 1 km pixel within it to check for high-temperature hot-spots. When one is found the date, time, location, and intensity are recorded. MODIS looks at every square km of the Earth every 48 hours, once during the day and once during the night, and the presence of two MODIS sensors in space allows at least four hot-spot observations every two days. Each day updated global maps are compiled to display the locations of all hot spots detected in the previous 24 hours. There is a drop-down list with volcano names which allow users to 'zoom-in' and examine the distribution of hot-spots at a variety of spatial scales. |
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WOVOdat
Single Volcano View Temporal Evolution of Unrest Side by Side Volcanoes |
WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
GVMID Data on Volcano Monitoring Infrastructure The Global Volcano Monitoring Infrastructure Database GVMID, is aimed at documenting and improving capabilities of volcano monitoring from the ground and space. GVMID should provide a snapshot and baseline view of the techniques and instrumentation that are in place at various volcanoes, which can be use by volcano observatories as reference to setup new monitoring system or improving networks at a specific volcano. These data will allow identification of what monitoring gaps exist, which can be then targeted by remote sensing infrastructure and future instrument deployments. |
| Volcanic Hazard Maps | The IAVCEI Commission on Volcanic Hazards and Risk has a Volcanic Hazard Maps database designed to serve as a resource for hazard mappers (or other interested parties) to explore how common issues in hazard map development have been addressed at different volcanoes, in different countries, for different hazards, and for different intended audiences. In addition to the comprehensive, searchable Volcanic Hazard Maps Database, this website contains information about diversity of volcanic hazard maps, illustrated using examples from the database. This site is for educational purposes related to volcanic hazard maps. Hazard maps found on this website should not be used for emergency purposes. For the most recent, official hazard map for a particular volcano, please seek out the proper institutional authorities on the matter. |
| EarthScope Consortium SAGE seismic stations/networks | EarthScope Consortium operates the NSF Geodetic Facility for the Advancement of Geoscience (GAGE) and NSF Seismological Facility for the Advancement of Geoscience (SAGE). The linked map shows the location of seismic stations from all available networks (permanent or temporary) within a radius of 0.18° (about 20 km at mid-latitudes) from the given location of Fisher. Users can customize a variety of filters and options in the left panel. Note that if there are no stations are known the map will default to show the entire world with a "No data matched request" error notice. |
| Large Eruptions of Fisher | Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA). |
| EarthChem | EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS). |
