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Latest news
Seismic signal from Bogoslof volcano, MSW station (on Makushin 60 km to the east from Bogoslof)
Tuesday, Apr 18, 2017
The Alaska Volcano Observatory (AVO) detected an increase in earthquake activity at the volcano since 15 April around 15:01 AKST / 23:01 UTC. Although no evidence of new eruptive activity has been found so far, the alert level of the volcano was raised again. ... [more]
Thursday, Apr 06, 2017
No more activity has been detected at the volcano during the past 3 weeks (since 13 Mar) and therefore the alert level was lowered to "Yellow". ... [more]
 

Bogoslof volcano

Submarine volcano 150 m / 492 ft
United States, Aleutian Islands, 53.93°N / -168.03°W
Current status: minor activity or eruption warning (3 out of 5)
Bogoslof webcams / live data
Bogoslof volcano books
Last update: 18 Apr 2017
Typical eruption style: explosive
Bogoslof volcano eruptions: 2016-17, 1992, 1951 (?), 1931 (?), 1926-28, 1913, (?), 1909-10, 1908 (?), 1907, 1906, 1883, 1806, 1786 Bogoslof Island in Alaska with the eroded remnants of Castle Rock lava dome from the 1796 eruption (image: Ann Harding/AVO USGS)
TimeMag. / DepthDistanceLocation
Mon, 13 Mar
Mon, 13 Mar 11:23 UTCM 2.2 / 8.4 km11 km- 108km W of Dutch Harbor, Alaska

Background:

Bogoslof is the emergent summit of a submarine volcano that lies 40 km north of the main Aleutian arc. It rises 1500 m above the Bering Sea floor. Repeated construction and destruction of lava domes at different locations during historical time has greatly modified the appearance of this "Jack-in-the-Box" volcano and has introduced a confusing nomenclature applied during frequent visits of exploring expeditions. The present triangular-shaped, 0.75 x 2 km island consists of remnants of lava domes emplaced from 1796 to 1992. Castle Rock (Old Bogoslof) is a steep-sided pinnacle that is a remnant of a spine from the 1796 eruption. Fire Island (New Bogoslof), a small island located about 600 m NW of Bogoslof Island, is a remnant of a lava dome that was formed in 1883.
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Smithsonian / GVP volcano information


Latest satellite images

Map of Bogoslof volcano (image: AVO / USGS)
Map of Bogoslof volcano (image: AVO / USGS)

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