Semisopochnoi volcano (Aleutian Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 8 September-14 September 2021 (Continuing Activity)
Mi, 8. Sep 2021, 06:00
06:00 AM | VON: VNSmall ash clouds from the explosions rose 3-4.6 km (10,000-15,000 ft) and dissipated within two hours. Sulfur dioxide emissions were detected in satellite images at altitudes less than 3 km (10,000 ft) a.s.l., sometimes extending downwind for hundreds of kilometers. During 7-9 September periods of lower-altitude ash emissions interspersed with voluminous steam plumes were observed in web camera images moving horizontally by the wind and rising no higher than 1.5 km (5,000 ft) a.s.l.
The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch.
Source: US Geological Survey Alaska Volcano Observatory (AVO)
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From: Global Volcanism Program, 2021. Report on Semisopochnoi. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 8 September-14 September 2021. Smithsonian Institution and US Geological Survey.
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Mi, 8. Sep 2021, 04:42
The explosive eruption of the volcano continues from the Mount Cerberus crater. ... Read all
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