Shishaldin volcano news & activity updates:
Shishaldin volcano (Aleutian Islands, Alaska): weak tremor, lava in summit crater
Wednesday Aug 07, 2019 12:05 PM | DOOR: T
AVO reported that satellite images of Shishaldin acquired on 28 July showed a small spatter cone with lava flows in the summit crater. During 31 July-6 August continuous weak tremor was recorded by the seismic network and elevated surface temperatures were sometimes visible in satellite images.
A small steam plume was observed in a few satellite and web camera images. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch.
Shishaldin volcano (Aleutian Islands, Alaska) activity update: Small lava lake deep in summit crater
Wednesday, Jul 24, 2019
Recent unrest (seismic tremor, thermal anomalies) has increased and a new, very minor eruption is underway. AVO field crews observed a small lava lake inside the deep funnel-shaped summit crater, but the activity has been contained within the crater so far. This is similar to the last eruption in 2014-15. The alert level has been raised to ORANGE/WATCH. A more substantial eruption is possible (like that of 1999) but there is no indication of this occurring so far. [meer...]
Thursday, Feb 08, 2018
The alert level of the volcano was lowered back to green, as there has been declining seismic and infrasound activity over the past month. According to the Alaska Volcano Observatory, "these observations represent a return to normal background activity at Shishaldin." [meer...]
Saturday, Mar 12, 2016
The alert level was lowered back to normal status. Detectable activity (visible observations and satellite-based data) has been decreasing steadily of the past several months, the Alaska Volcano Observatory reported: ... [meer...]
Saturday, Nov 21, 2015
No anomalous activity at Shishaldin has been observed in satellite data since weakly elevated surface temperatures were detected on October 16. Low-amplitude seismic tremor continues but is not considered to be indicative of an active eruption. ... [meer...]
Friday, Nov 06, 2015
Seismicity at Shishaldin continued to be slightly elevated over background levels during 28 October-2 November, indicating that low-level eruptive activity confined to the summit crater continued. ... [meer...]