Alaska earthquakes

M2.7 earthquake 54 km WSW of Adak, Alaska

A magnitude 2.7 earthquake struck 54 km WSW of Adak, Alaska on Thu, Jun 10, 2021, 9:48 PM HADT (06:48 UTC), 96 km (60 mi) below the surface.

A larger quake followed: M4.3 83 km W of Adak, Alaska. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 2.7 (ml), micro
Local time: Thu, Jun 10, 2021, 9:48 PM HADT
UTC: 2021-06-11 06:48:57 UTC
Depth: 96.0 km (59.7 mi), intermediate-depth
Epicenter: 51.749° N, 177.404° 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.

Location uncertainty: About 10.7 km horizontally, 2.8 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 188°, poorly surrounded by stations
Stations used: 26

Nearby

Within 100 km, magnitude 1.5 and up: 191 in the 60 days after this one and 29 in the 30 days before it.

After

The first 60 of 191.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000ec6r (also filed as ak0217g0xcaw). Read Thu, Sep 24, 2026, 12:05 PM UTC.