the republic logo

Semisopochnoi Volcano in western Aleutians shows signs of increased earthquake activity


ANCHORAGE, Alaska — The Alaska Volcano Observatory is keeping an eye on a western Aleutians Island volcano that last erupted in 1987.

The observatory has upgraded the alert level to "advisory" for Semisopochnoi (sem-is-SOH'-pahk-noy) Volcano, indicating it's exhibiting signs of elevated unrest above known background levels.

The volcano is 2,625 feet high. It's on an uninhabited island 40 miles northeast of Amchitka (am-CHIT-ka) Island and about 1,300 miles southwest of Anchorage.

The observatory says earthquake activity picked up in January and has increased in the last few days.

The observatory has detected brief periods of seismic tremor, which can indicate movement of magma or magma gases.

Think your friends should see this? Share it with them!

Story copyright 2015 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

Feedback, Corrections and Other Requests: AP welcomes feedback and comments from readers. Send an email to and it will be forwarded to the appropriate editor or reporter.

We also have more stories about:
(click the phrases to see a list)


Follow The Republic:

All content copyright ©2015 The Republic, a division of Home News Enterprises unless otherwise noted.
All rights reserved. Privacy policy.