Alaska earthquakes

M1.6 earthquake 63 km SSE of Adak, Alaska

A magnitude 1.6 earthquake struck 63 km SSE of Adak, Alaska on Mon, Sep 6, 2021, 11:07 PM HADT (08:07 UTC), 19 km (12 mi) below the surface.

A larger quake followed: M4.7 49 km NE of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
1.6 (ml), micro
Local time
UTC
2021-09-07 08:07:01 UTC
Depth
18.6 km (11.6 mi), shallow
Epicenter
51.368° N, 176.213° 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.

How well it is located

Reviewed by a seismologist.

Stations used
20

Nearby

Within 100 km, magnitude 1.5 and up: 105 in the 60 days after this one and 94 in the 30 days before it.

After

The first 60 of 105.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021bhl5mi8. Read Thu, Sep 24, 2026, 11:54 AM UTC.