Chiginagak volcano

Stratovolcano 2221 m / 7,287 ft
United States, Alaska Peninsula, 57.14°N / -156.99°W
Current status: normal or dormant (1 out of 5)

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Typical eruption style: unspecified
Chiginagak volcano eruptions: 1998 

TimeMag. / DepthDistance/Location
Saturday, September 18, 2021 00:03 GMT (1 earthquake)
Sep 17, 2021 4:03 pm (GMT -8) (Sep 18, 2021 00:03 GMT)
2.8

41 km
49 km (30 mi)
Gulf of Alaska, 62 mi east of Port Heiden, Lake and Peninsula, Alaska, USA
Wednesday, September 15, 2021 03:54 GMT (1 earthquake)
Sep 14, 2021 7:54 pm (GMT -8) (Sep 15, 2021 03:54 GMT)
1.7

4.6 km
32 km (20 mi)
32 Km NE of Ugashik, Alaska

Background

The symmetrical, calc-alkaline Chiginagak stratovolcano located about 15 km NW of Chiginagak Bay contains a small summit crater, which is breached to the south, and one or more summit lava domes. Satellitic lava domes occur high on the NW and SE flanks of the glacier-mantled volcano. An unglaciated lava flow and an overlying pyroclastic-flow deposit extending east from the summit are the most recent products of Chiginagak. They most likely originated from a lava dome at 1687 m on the SE flank, 1 km from the summit of the volcano, which has variably been estimated to be from 2075 to 2221 m high. Brief ash eruptions were reported in July 1971 and August 1998. Fumarolic activity occurs at 1600 m elevation on the NE flank of the volcano, and two areas of hot-spring travertine deposition are located at the NW base of the volcano near Volcano Creek.
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Smithsonian / GVP volcano information


See also: Sentinel hub | Landsat 8
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