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Fourpeaked volcano

Updated: Jun 2, 2023 11:11 GMT -
Stratovolcano 2105 m / 6,906 ft
United States, Alaska Peninsula, 58.77°N / -153.67°W
Current status: normal or dormant (1 out of 5)
Last update: 10 Dec 2021 (Smithsonian / USGS Weekly Volcanic Activity Report)

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Typical eruption style: unspecified
Fourpeaked volcano eruptions: 2006 

Latest nearby earthquakes

TimeMag. / DepthDistance/Location
Sunday, May 28, 2023 GMT (1 quake)
May 28, 2023 10:28 am (GMT -8) (May 28, 2023 18:28 GMT)

0.6 km
3.5 km (2.2 mi)
59 mi southeast of Kokhanok, Lake and Peninsula, Alaska, USA
Thursday, May 25, 2023 GMT (1 quake)
May 25, 2023 12:52 am (GMT -8) (May 25, 2023 08:52 GMT)

53 km
31 km (19 mi)
62 mi northwest of Kodiak Station, Kodiak Island Borough, Alaska, USA
Monday, May 22, 2023 GMT (1 quake)
May 22, 2023 9:24 am (GMT -8) (May 22, 2023 17:24 GMT)

74 km
16 km (9.9 mi)
76 mi northwest of Kodiak, Alaska, USA
Sunday, May 21, 2023 GMT (1 quake)
May 21, 2023 3:49 am (GMT -8) (May 21, 2023 11:49 GMT)

15 km
6 km (3.7 mi)
60 mi southeast of Kokhanok, Lake and Peninsula, Alaska, USA


Poorly known Fourpeaked volcano in NE Katmai National Park consists of isolated outcrops surrounded by the Fourpeaked Glacier, which descends eastward almost to the Shelikof Strait. The orientation of andesitic lava flows and extensive hydrothermal alteration of rocks near the present 2105-m-high summit suggest that it probably marks the vent of Fourpeaked volcano. Eruptive activity during the Holocene had not been confirmed prior to the first historical eruption of Fourpeaked in September 2006. A N-trending fissure extending 1 km from the summit produced minor ashfall.
Smithsonian / GVP volcano information

See also: Sentinel hub | Landsat 8 | NASA FIRMS
Wed, 13 Jun 2007, 06:00

Fourpeaked volcano (United States) - Smithsonian / USGS Weekly Volcanic Activity Report for 13 June-19 June 2007 (Continuing Activity)

AVO reported that on 6 June the Volcanic Activity Alert Level for Fourpeaked was lowered from Advisory to Normal and the Aviation Color Code was lowered from Yellow to Green based on declining rates of seismicity and gas emission. ... Read all
Sat, 11 Nov 2006, 09:13

Fourpeaked volcano (Alaska), activity update: low seismicity, steam plumes

Low-level earthquake activity continues at Fourpeaked volcano. Web camera views this past week show a typical steam plume rising several hundred meters above the summit. Read all
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