AVO can no longer seismically monitor the following volcanoes because of seismic station outages. As a result, AVO is unable to (1) assess whether these volcanoes may be building towards an eruption and (2) quickly confirm or dismiss reports of activity at these volcanoes.
Because these volcanoes are no longer seismically monitored, they will move from volcano alert level Normal and aviation color code Green to "unassigned." As at other volcanoes without real-time seismic networks, AVO will continue to use satellite data, infrasound, and reports from pilots and ground observers to detect signs of eruptive activity. Complete report text
Volcanic unrest at Little Sitkin Volcano has decreased over the past several months, and the Alaska Volcano Observatory now considers it to have reached typical background levels. Thus, the Aviation Color Code has been reduced to Green and the Volcano Alert Level had been reduced to Normal. Complete report text