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Korovin volcano

Updated: May 30, 2023 13:47 GMT -
Stratovolcano 1533 m / 5030 ft
Andreanof Islands, Aleutian Islands, 52.38°N / -174.17°W
Current status: normal or dormant (1 out of 5)
Last update: 10 Dec 2021 (Volcanic Alert Level lowered to Green)

Korovin is a 1533 m high stratovolcano in the central Aleutian Islands and one of the most active volcanoes in Alaska. On average, it has been active every 10-15 years, its last eruption being in Nov-Dec 2006 with ash emissions.

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Typical eruption style: Explosive
Korovin volcano eruptions: 1829(?), 1844(?), 1907(?), 1951(?), 1953(?), 1973, 1976(?), 1986(?), 1987, 1998, 2005, 2006

Latest nearby earthquakes

TimeMag. / DepthDistance/Location
Thursday, May 25, 2023 GMT (2 quakes)
May 25, 2023 2:05 pm (GMT -9) (May 25, 2023 23:05 GMT)

7.4 km
9.4 km (5.8 mi)
17 Km NNE of Atka, Alaska
May 24, 2023 9:28 pm (GMT -9) (May 25, 2023 06:28 GMT)

13 km
6.6 km (4.1 mi)
Andreanof Islands, Aleutian Islands, Alaska
Wednesday, May 24, 2023 GMT (1 quake)
May 24, 2023 3:42 am (GMT -9) (May 24, 2023 12:42 GMT)

121 km
36 km (22 mi)
Bering Sea, 18 mi east of Atka, Aleutians West, Alaska, USA


Geologically, Korovin belongs to the Atka volcanic complex on northern Atka Island. The Atka complex comprises a broad ancient central shield volcano, upon which a larger stratovolcano had been built destroyed by caldera formation about 300,000 to 500,000 years ago.
Korovin has two summit vents 0.6 km apart. The northwestern summit vent is a symmetric cone with a small crater. The southeastern summit vent is on the remnant of a cone with a steep-walled crater, about 1 km wide at the rim and at least several hundred meters deep with vertical crater walls. It contains a turquoise green lake with solfataric activity.

See also: Sentinel hub | Landsat 8 | NASA FIRMS
Location of Korovin volcano (map created by Janet Schaefer, courtesy of Alaska Volcano Observatory / Alaska Division of Geological & Geophysical Surveys)
Location of Korovin volcano (map created by Janet Schaefer, courtesy of Alaska Volcano Observatory / Alaska Division of Geological & Geophysical Surveys)
Fri, 4 Dec 2020, 08:59

Korovin volcano (Andreanof Islands, Aleutian Islands): Volcanic Alert Level lowered to Green

The Alaska Volcano Observatory (AVO) reported that Aviation Color Code and Alert Level was decreased to GREEN/NORMAL earlier today. ... Read all
Wed, 2 Dec 2020, 06:00

Korovin volcano (Andreanof Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 2 December-8 December 2020 (Continuing Activity)

Seismic activity at Korovin had decreased, and satellite images showed no signs of unrest over the previous several weeks. AVO lowered the Alert Level to Green and the Aviation Color Code to Normal on 3 December. ... Read all
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