Shishaldin volcano news & activity updates:
Shishaldin volcano (Aleutian Islands, Alaska): alert level lowered to green/normal
Saturday Mar 12, 2016 09:00 AM | BY: T
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:
"There has been a steady decrease in detected thermal activity at Shishaldin over the past several months. No anomalous activity has been observed in several clear satellite images of Shishaldin since moderately elevated surface temperatures were detected on Jan. 13. Airwaves associated with low-level explosive degassing have not been detected in infrasound data since Feb. 7.
Low-amplitude seismic tremor consistent with an open, degassing system continues to be seen in seismic data and is considered to be within the bounds of background activity for Shishaldin. AVO is therefore downgrading the status of Shishaldin Volcano from aviation color code YELLOW to GREEN and from volcano alert level ADVISORY to NORMAL."
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Previous news
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. ...
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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. ...
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Thursday, Sep 03, 2015
Seismicity at the volcano continued to be elevated over background levels during 26 August-1 September, indicating that low-level eruptive activity confined to the summit crater continued. ...
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Thursday, Jun 04, 2015
AVO reported that seismicity at Shishaldin continued to be elevated over background levels 20-26 May indicating that low-level eruptive activity confined to the summit crater likely continued. ...
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Thursday, May 21, 2015
AVO reported that seismicity at Shishaldin continued to be elevated over background levels 13-19 May, indicating that low-level eruptive activity confined to the summit crater likely continued. ...
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