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Semisopochnoi volcano eruptions

Stratovolcano 1221 m / 4,006 ft
United States, Aleutian Islands, 51.93°N / 179.58°E
Eruption list: 2021, 2020, 2019, 2018, 1987


Wed, 9 Aug 2023, 14:00

Semisopochnoi volcano (Aleutian Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 2 August-8 August 2023 (Continuing Activity)

AVO reported that the last time possible explosions were detected at Semisopochnoi's Mount Young in monitoring data was 25 April and the last ash emission occurred on 5 May. Since then, earthquake activity has been low and steaming from the N crater continued. On 3 August the Volcano Alert Level was lowered to Normal (the lowest level on a four-level scale) and the Aviation Color Code was lowered to Green (the lowest color on a four-color scale). ... Read all
Sat, 5 Aug 2023, 19:55

Semisopochnoi volcano (Aleutian Islands): alert status lowered to Green

Semisopochnoi volcano (image: AVO)
The alert status for the volcano was lowered to "green", as no eruptive signs of the activity have been detected since 5 May, nor any signal of volcanic unrest. ... Read all