Alaska earthquakes

M1.7 earthquake 67 km SSE of Adak, Alaska

A magnitude 1.7 earthquake struck 67 km SSE of Adak, Alaska on Sat, Apr 17, 2021, 6:41 PM HADT (03:41 UTC), 12 km (8 mi) below the surface.

A larger quake followed: M2.1 82 km E of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
1.7 (ml), micro
Local time
UTC
2021-04-18 03:41:59 UTC
Depth
12.3 km (7.6 mi), shallow
Epicenter
51.307° N, 176.276° 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
22

Nearby

Within 100 km, magnitude 1.5 and up: 72 in the 60 days after this one and 79 in the 30 days before it.

After

The first 60 of 72.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0214yo2p49. Read Thu, Sep 24, 2026, 8:39 AM UTC.