The Alaska Volcano Observatory dropped Iliamna’s activity level to green Wednesday following a prolonged period of unrest.
Activity at the volcano on the west side of Cook Inlet decreased during the past several months, and it is now considered to have reached typical background levels, according to an Observatory press release.
Occasional small earthquakes continue around the volcano. The seismic activity is normal compared to Iliamna’s peak of unrest in March 2012.
The Observatory experienced network problems in May, which reduced its ability to gauge Iliamna’s activity.
Stations near the volcano went offline, but large earthquakes occurring underneath Iliamna were still detected at far-off stations, and scientists kept the elevated alert level in place, said Jeff Freymueller, coordinating scientist at the Geophysical Institute of the University of Alaska Fairbanks in a September 2012 interview with the Clarion.