Alaska earthquakes

M2.7 earthquake 70 km ENE of Adak, Alaska

A magnitude 2.7 earthquake struck 70 km ENE of Adak, Alaska on Mon, Aug 24, 2020, 1:35 AM HADT (10:35 UTC), 152 km (94 mi) below the surface.

A larger quake followed: M5.3 76 km SW of Atka, Alaska. This one was a foreshock.

Map

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: Mon, Aug 24, 2020, 1:35 AM HADT
UTC: 2020-08-24 10:35:42 UTC
Depth: 152.1 km (94.5 mi), intermediate-depth
Epicenter: 52.145° N, 175.713° 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 10.8 km horizontally, 4.9 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 174°
Stations used: 23

Nearby

Within 100 km, magnitude 1.5 and up: 140 in the 60 days after this one and 69 in the 30 days before it.

After

The first 60 of 140.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000bljv (also filed as ak020aw4j6j9). Read Tue, Sep 29, 2026, 1:20 AM UTC.