Semisopochnoi volcano (Alaska): alert level lowered
Mon, 23 Nov 2020, 07:56 | BY: MARTIN
The Alaska Volcano Observatory (AVO) lowered the alert level of the volcano because no eruptive activity has been detected at since mid-June.Seismicity has remained above background levels since that time but had decreased to very low levels before a satellite link for transmitting seismic data failed on 11 November. Low-level seismic unrest may be continuing undetected.
Source: Alaska Volcano Observatory volcano activity update 23 November 2020
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Previous news
Wed, 18 Nov 2020, 06:00
Semisopochnoi volcano (Aleutian Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 18 November-24 November 2020 (Continuing Activity)
AVO reported that no signs of eruptive activity at Semisopochnoi had been recorded since mid-June. Seismicity had been elevated above background levels but declined to very low levels before 11 November, when the satellite the link to transmit the data failed. Both the Aviation Color Code and the Volcano Alert Level were lowered to Unassigned, reflecting the lack of available seismic data to detect unrest. ... Read all
Thu, 2 Apr 2020, 07:28
Semisopochnoi volcano (Alaska): alert level lowered
The Alaska Volcano Observatory (AVO) lowered the alert level of the volcano because no signs of eruptive activity had been detected during the past two weeks: ... Read all
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