ALASKA EARTHQUAKE CENTER

In early May, over the span of two days, a swarm of more than 50 earthquakes occurred in the Fox Islands region in the Aleutians. Most of the earthquakes were small, with a few larger events measuring over magnitude 5 southwest of Umnak Island.Similar earthquake swarms have periodically occurred in nearly the exact same location for the past 50 years, but scientists are still figuring out what causes them.

In this episode of "Island Interviews," Stephen Holtkamp, a data analyst with the Alaska Earthquake Center, explains the earthquake swarm and how similar events have occurred in the past.

A magnitude-6.8 earthquake hit about 58 miles southeast of Nikolski early Tuesday morning, according to the Alaska Earthquake Center.Natalia Ruppert, a seismologist with the AEC in Fairbanks, said the earthquake hit at about 2:30 a.m. and was preceded and followed by more seismic activity.

A magnitude-6.4 earthquake hit about 25 miles east of Nikolski Tuesday morning, and was felt by residents in Nikolski, Unalaska, and Akutan. The…

Residents of coastal Alaska, from Sand Point to Kodiak, scrambled for higher ground and motored boats into deeper water Monday afternoon after a magnitude…

Scientists have downgraded the alert level at Makushin Volcano after a sustained pause in unrest. John Power, a geophysicist with the Alaska Volcano…

A magnitude-7.8 Aleutian earthquake late Tuesday night prompted tsunami warnings in communities across coastal Alaska, from Homer to Unalaska. Sand Point…

Over the past two weeks, there has been increased earthquake activity near Makushin Volcano. The activity started on June 15with a magnitude 4.2…

More than half of the City of Unalaska's tsunami sirens aren't functioning, according to city officials.The city tested its tsunami sirens, which were…

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…