Alaska earthquakes

M2.5 earthquake 268 km W of Adak, Alaska

A magnitude 2.5 earthquake struck 268 km W of Adak, Alaska on Mon, Sep 14, 2020, 9:16 PM GMT+12 (09:16 UTC), 110 km (68 mi) below the surface.

A larger quake followed: M4.3 Andreanof Islands, Aleutian Islands, 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: 2.5 (ml), micro
Local time: Mon, Sep 14, 2020, 9:16 PM GMT+12
UTC: 2020-09-14 09:16:19 UTC
Depth: 110.2 km (68.5 mi), intermediate-depth
Epicenter: 51.818° N, 179.468° E
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 5.2 km horizontally, 7.0 km in depth
Magnitude uncertainty: ±0.16
Depth from: From location
Station coverage gap: 111°
Stations used: 18

Nearby

Within 100 km, magnitude 1.5 and up: 113 in the 60 days after this one and 73 in the 30 days before it.

After

The first 60 of 113.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000c2yu (also filed as ak020buu3wu0). Read Mon, Sep 28, 2026, 2:30 AM UTC.