Alaska earthquakes

M4.1 earthquake 55 km ENE of Adak, Alaska

A magnitude 4.1 earthquake struck 55 km ENE of Adak, Alaska on Fri, Sep 11, 1998, 10:09 AM HADT (19:09 UTC), 94 km (58 mi) below the surface.

A larger quake followed: M5.3 70 km SSE of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
4.1 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1998-09-11 19:09:32 UTC
Depth
93.8 km (58.3 mi), intermediate-depth
Epicenter
52.132° N, 175.939° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 4 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0008ust. Read Sat, Oct 3, 2026, 3:56 AM UTC.