Alaska earthquakes

M3.0 earthquake 283 km W of Adak, Alaska

A magnitude 3.0 earthquake struck 283 km W of Adak, Alaska on Sun, Jul 12, 2020, 6:01 AM GMT+12 (18:01 UTC), 79 km (49 mi) below the surface.

A larger quake followed: M4.6 294 km WSW of Adak, 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: 3.0 (ml), minor
Local time: Sun, Jul 12, 2020, 6:01 AM GMT+12
UTC: 2020-07-11 18:01:19 UTC
Depth: 79.2 km (49.2 mi), intermediate-depth
Epicenter: 51.628° N, 179.277° 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 14.0 km horizontally, 7.3 km in depth
Magnitude uncertainty: ±0.13
Depth from: From location
Station coverage gap: 128°
Stations used: 31

Nearby

Within 100 km, magnitude 1.5 and up: 139 in the 60 days after this one and 57 in the 30 days before it.

After

The first 60 of 139.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000b341 (also filed as ak0208vhg1hd). Read Tue, Sep 29, 2026, 5:11 AM UTC.