ALASKA EARTHQUAKE CENTER

A cluster of earthquakes struck about 110 miles southeast of Unalaska throughout the day Tuesday. Scientists say the earthquakes are normal for the region, and no one has reported feeling them in the U.S. Geological Survey’s Felt Report database.

A magnitude 5.6 earthquake struck about 58 miles southwest of Unalaska Sunday afternoon. While many locals felt the event, including in Nikolski and Akutan, there is no current threat of a tsunami or cause for concern.

A swarm of earthquakes and aftershocks shook Alaska's western Aleutian Islands on Sunday. Scientists at the Alaska Earthquake Center are monitoring an unusually high number of moderate earthquakes near Adak Island. About a dozen tremors between magnitude 6.3 and 5 struck within hours on Sunday.

If you were in Unalaska this weekend, there’s a chance you felt an earthquake. A magnitude 5.4 earthquake struck 63 miles southwest of the island on Oct. 5 at 4:50 a.m., followed by many aftershocks. It created a seismic sequence where 10 of the aftershocks measured greater than magnitude 4.

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…