Snowy Mountain volcano
Stratovolcanoes 2162 m / 7,093 ft
United States, Alaska Peninsula, 58.34°N / -154.68°W
Current status: dormant (1 out of 5) | Reports
Snowy Mountain volcano books
United States, Alaska Peninsula, 58.34°N / -154.68°W
Current status: dormant (1 out of 5) | Reports
Snowy Mountain volcano books
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Typical eruption style: unspecified
Snowy Mountain volcano eruptions: 1710 ± 200 years
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Snowy Mountain volcano eruptions: 1710 ± 200 years
| Time | Mag. / Depth | Distance | Location |
| Sun, 15 Apr | |||
| Sun, 15 Apr 17:47 UTC | M 2.3 / 97.8 km | 4 km | - 98km NNW of Larsen Bay, Alaska |
| Sat, 14 Apr | |||
| Sat, 14 Apr 00:46 UTC | M 1.6 / 11.2 km | 10 km | - 100km NNW of Larsen Bay, Alaska |
| Fri, 13 Apr | |||
| Fri, 13 Apr 21:35 UTC | M 2.4 | 3 km | - 97km ESE of King Salmon, Alaska |
| Mon, 9 Apr | |||
| Mon, 9 Apr 21:07 UTC | M 2.3 / 90.7 km | 6 km | - 124km N of Larsen Bay, Alaska |
| Fri, 6 Apr | |||
| Fri, 6 Apr 04:28 UTC | M 2.2 / 1.1 km | 1 km | - 98km ESE of King Salmon, Alaska |
Background:
Glacier-covered, 2161-m-high Snowy Mountain, located 15 km NE of Mount Katmai, is the SW-most of a chain of closely spaced volcanoes extending NE along the crest of the Alaska Range. More than 90% of the compound Snowy volcano is mantled by glacial ice, which prompted the naming of the volcano by members of the 1917 Katmai expedition. Two small andesitic-dacitic stratovolcanoes, SW Snowy and NE Snowy, originated about 200,000 years ago. Only NE Snowy has been active during the Holocene. Late-Holocene collapse of this volcano produced a large debris avalanche that traveled to the north and left a large breached crater inside which a blocky lava dome was constructed. Peat beneath an ash layer thought to be associated with the the lava dome was radiocarbon dated at about 250 +/- 70 years ago. No historical eruptive activity has been documented, but fumarolic activity has been observed at NE Snowy. A zone of persistent diffuse shallow seismicity is located on and NW of the volcano.---
Smithsonian / GVP volcano information
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