Alaska earthquakes

M1.5 earthquake 48 km SSE of Adak, Alaska

A magnitude 1.5 earthquake struck 48 km SSE of Adak, Alaska on Sat, Apr 17, 2021, 10:09 AM HADT (19:09 UTC), 23 km (14 mi) below the surface.

A larger quake followed: M1.6 62 km SSE of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
1.5 (ml), micro
Local time
UTC
2021-04-17 19:09:26 UTC
Depth
23.2 km (14.4 mi), shallow
Epicenter
51.506° N, 176.249° 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
21

Nearby

Within 100 km, magnitude 1.5 and up: 85 in the 60 days after this one and 75 in the 30 days before it.

After

The first 60 of 85.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0214x9vctl. Read Thu, Sep 24, 2026, 8:39 AM UTC.