Shishaldin volcano (Aleutian Islands, Alaska): elevated surface temperature; thin ash deposit
Wed, 6 May 2020, 07:3707:37 AM | BY: MARTIN
Elevated surface temperature visible from satellite (image: Sentinel 2)
The Alaska Volcano Observatory (AVO) reported that unrest continues at the volcano. A satellite image shows gas-steam plume containing some amount of ash extending a short distance southeast from the summit.
An ash plume from Shishaldin volcano (image: @tonyveco/twitter)
Seismicity remains at low levels including periods of occasional amplitude tremor.
Elevated surface temperatures in the summit crater were observed.
No explosive activity was detected.
Retrospective analysis suggests to an increase in the diameter and depth of the vent within the summit crater, likely a small collapse occurred approx. one week ago.
Activity could escalate with little warning, and additional eruptive activity within the summit crater, lava flows, lahars, and ash-producing eruptive events could occur.
Source: Alaska Volcano Observatory volcano activity update 6 May 2020
Fri, 17 Apr 2020, 06:17
The Alaska Volcano Observatory (AVO) reported that seismicity has decreased over the past two weeks. Satellite views show no lava or changes within the crater since the start of April, accompanied by a decrease in surface temperatures. ... Read all