Tanaga volcano (Andreanof Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 1 March-7 March 2023 (New Activity / Unrest)
Thu, 2 Mar 2023, 11:00 11:00 AM | BY: VNAt 2215 on 7 March AVO raised the Aviation Color Code for Tanaga to Yellow and the Volcano Alert Level to Advisory due to increased seismicity. Earlier that afternoon, starting at about 1330, seismicity began to increase and by around 2045 earthquakes were occurring at a rate of 2-3 per minute. The events were located at shallow depths and the largest events were M2-3.
Source: US Geological Survey Alaska Volcano Observatory (AVO)
From: Global Volcanism Program, 2023. Report on Tanaga. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 22 February-28 February 2023. Smithsonian Institution and US Geological Survey.
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Wed, 14 Apr 2021, 06:00
Tanaga volcano (Andreanof Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 14 April-20 April 2021 (Continuing Activity)
AVO reported that communication was reestablished with two seismic stations on Tanaga, making a total of four operational stations. On 19 April AVO changed both the Aviation Color Code and the Volcano Alert Level to Green and Normal, respectively, reflecting the resumption of seismically monitoring unrest. ... Read all
Thu, 1 Apr 2021, 06:23
Tanaga volcano (Aleutian Islands): Volcanic Alert Level lowered to 'Unassigned'
Low power likely due to snow cover has resulted in loss of operation and communication with all but two seismic stations at the volcano. ... Read all