Semisopochnoi (United States) - Report for 8 January-14 January 2020

On 9 January AVO lowered the Aviation Color Code for Semisopochnoi to Yellow and the Volcano Alert Level to Advisory, noting that explosions had not been detected since 19 December 2019.
In addition, seismic tremor had last been recorded on 29 December 2019; seismicity subsequently declined but remained above background levels.

Source: US Geological Survey Alaska Volcano Observatory (AVO)

Fonte/Source: Global Volcanism Program/Smithsonian Institution


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