Volcano profile

United States

Semisopochnoi.

Volcano profile for Semisopochnoi in United States, including its current status, catalog data, nearby earthquakes and live map layers.

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Current status
No current eruption report
Volcano type
Stratovolcano
Elevation
1,221 m
Last documented eruption
2023
Coordinates
51.93°, 179.58°
GVP number
311060

Live map

Live map around Semisopochnoi

Satellites & ash clouds

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No current eruption report

United States

Semisopochnoi

Stratovolcano

Elevation
1,221 m
Last documented eruption
2023
No current eruption report

No current report does not mean extinct or safe. Source coverage varies between volcanoes.

Geography & tectonics
Coordinates
51.93°, 179.58°
Volcanic region (GVP)
Aleutian Ridge Volcanic Arc
Tectonic setting
Subduction zone / Intermediate crust (15-25 km)
GVP
311060
Documented eruptions · Nearby earthquakes ↓

Source: Smithsonian Global Volcanism Program

This display is not an official warning. Follow information from the responsible authorities when making local decisions.

Profile

Semisopochnoi · United States

Documented eruptions

Latest catalogue records. Historical records are incomplete; missing values are unknown. VEI describes eruption explosivity.

StartEndVEIReport status
2 Feb 20215 May 20232Confirmed eruption
7 Dec 201919 Jun 20201Confirmed eruption
16 Jul 201924 Aug 20191Confirmed eruption
8 Sep 201831 Oct 20181Confirmed eruption
13 Apr 198718 Apr 1987?2Confirmed eruption
2 Jul 1873Not available—Confirmed eruption
2 Jul 1830Not available—Uncertain eruption
1792Not available—Uncertain eruption

Source: Smithsonian GVP · Dataset date: 2026-09-21

Nearby earthquakes

Last 7 days · 100 km · up to 10 events. Proximity does not establish a volcanic cause.

  • No recorded events in this selection.
Nearby earthquakes ↗

QuakeMap24

Volcano at a glance

Map view with the current report status and volcano elevation.

Semisopochnoi · No current eruption report · 1,221 m

Active volcanoes

Active volcanoes

Other volcanoes with a current eruption report.

Eruption reportedAiraJapanCaldera · 1,117 mEruption reportedDukonoIndonesiaVolcanic complex · 1,273 mEruption reportedGreat SitkinUnited StatesStratovolcano · 1,740 mEruption reportedIbuIndonesiaStratovolcano · 1,357 mEruption reportedKanlaonPhilippinesStratovolcano · 2,422 mEruption reportedKarangetangIndonesiaStratovolcano · 1,797 mEruption reportedKlyuchevskoyRussiaStratovolcano · 4,754 mEruption reportedKrakatauIndonesiaCaldera · 285 m

QuakeMap24

Sources & data dates

Core data comes from the Smithsonian Global Volcanism Program and USGS. Map layers and live aircraft are loaded from the sources identified on the page.

This display is not an official warning. Follow information from the responsible authorities when making local decisions.

VAAC / NOAA NWS

Satellite layers · Last successful retrieval: Sep 21, 2026, 1:38 PM UTC