Shishaldin volcano news & activity updates:
Shishaldin volcano (Aleutian Islands, Alaska): Volcanic Alert Level lowered to Normal
jeudi juin 25, 2020 06:13 | AUTEUR : MARTIN
The Alaska Volcano Observatory (AVO) reported that the seismicity at the volcano has decreased to background levels. Satellite views over the past few weeks suggest typical background surface temperatures and light steaming at the summit and no signs of new volcanic activity within the crater.
Shishaldin volcano yesterday (image: AVO)
Due to this decrease in activity, the Alaska Volcano Observatory is decreasing the Aviation Color Code to GREEN and the Alert Level to NORMAL.
This most recent eruptive cycle at Shishaldin began in July 2019 with pauses in activity in late September/early October 2019 and February 2020. The most recent activity in mid-March was confined to the summit crater except for minor ash deposits near the summit. Only minor rockfalls within the summit crater, not associated with eruptive activity, have been detected since early April. Pauses in eruptions are common at Shishaldin, and therefore eruptive activity could resume with little warning. The Alaska Volcano Observatory will continue to monitor the volcano closely.
Source: Alaska Volcano Observatory volcano activity update 25 June 2020
mercredi, mai 06, 2020
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. ... lire toutes
vendredi, avril 17, 2020
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. ... lire toutes
lundi, avril 06, 2020
The Alaska Volcano Observatory (AVO) reported that unrest continues at the volcano. Seismicity remained elevated including periods of weak continuous tremor and occasional low-frequency earthquakes. ... lire toutes
jeudi, mars 26, 2020
The Alaska Volcano Observatory (AVO) reported that seismicity remains elevated with continuous low-level tremor. Satellite and web camera views were mostly obscured by clouds over the past 24 hours, but one relatively clear image showed a small gas plume emanating from the summit of the volcano. Eruptive activity appears confined to the summit area during this most recent period of unrest, which started mid-March. Activity could increase with little or no warning, however, resulting in lava flows and lahars outside of the crater and (or) ash emissions. lire toutes
vendredi, mars 20, 2020
The Alaskan Volcano Observatory (AVO) report that the eruptive activity continues at Shishaldin volcano. Minor explosive activity has subsided over the past 24 hours, but seismicity remains elevated with near-continuous tremor. A small steam plume from the summit was observed over the past 24 hours. For now, eruptive activity looks as if it is confined to the summit area, but activity could increase with little or no warning resulting in lava flows outside of the crater, lahars, and ash emissions. ... lire toutes