alaska volcano observatory

Courtesy Malcolm Herstand / Alaska Volcano Observatory

KUCB's Vic Fisher interviewed Dr. John Power about recent earthquake activity in the vicinity of Makushin Volcano and the relationship to possible volcanic activity.  Dr. John Power is an expert in geophysical seismology and works for the Alaska Volcano Observatory.

During the interview, Dr. Power mentioned several online informational resources:

Alaska Earthquake Center


Updated 06/15/2020 at 7 p.m.

A magnitude-4.2 earthquake occurred under Makushin Volcano Monday afternoon and was felt in Unalaska.

At around 2:16 p.m., an earthquake at a depth of about five miles hit approximately six miles southeast of the volcano's summit, according to the Alaska Volcano Observatory. Small aftershocks are continuing, as is typical for an earthquake of this size.

Alaska Volcano Observatory


An explosion at one of Alaska's most active volcanoes has led scientists to raise its alert level to "watch." This comes after the Alaska Volcano Observatory (AVO) lowered Cleveland Volcano's alert level in early May after nearly a year and a half of inactivity.

Cleveland is located on an uninhabited island in the central Aleutians, west of Umnak Island. Around 10:30 p.m. on Monday, the AVO detected a small explosion that sent an ash plume 22,000 feet, traveling to the south.

Matt Loewen / Alaska Volcano Observatory

A magnitude 3.5 earthquake occurred at Great Sitkin Volcano on Friday.

Since then, seismic activity has returned to lower levels, and no eruptive activity has been detected at the volcano – located 26 miles east of the community of Adak.

Hans Schwaiger, a scientist with the Alaska Volcano Observatory (AVO), said it appears the shallow earthquake was an isolated event, although small local earthquakes have continued over the past day.

National Oceanic and Atmospheric Administration

After two months of activity, Pavlof Volcano has been downgraded to a "normal" alert level.

The Alaska Volcano Observatory (AVO) issued an "advisory" for the volcano — which is located about 35 miles from Cold Bay — in December. But over the past several weeks, seismic activity steadily decreased.

The last observable sign was what the AVO calls "minor steam emissions," which occurred in late February. Since then, there have been no signs of activity at the volcano.