Alaska earthquakes

M4.4 earthquake 44 km SE of Adak, Alaska

A magnitude 4.4 earthquake struck 44 km SE of Adak, Alaska on Tue, Apr 6, 2021, 12:02 AM HADT (09:02 UTC), 51 km (32 mi) below the surface.

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The earthquake

Magnitude: 4.4 (mb), light
Local time: Tue, Apr 6, 2021, 12:02 AM HADT
UTC: 2021-04-06 09:02:27 UTC
Depth: 51.4 km (32.0 mi), shallow
Epicenter: 51.550° N, 176.249° W
Region: Alaska
Felt reports: 1
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

1 person reported to the USGS what they felt; the strongest reported shaking was I, not felt shaking.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 4.8 km horizontally, 6.2 km in depth
Magnitude uncertainty: ±0.04
Depth from: From location
Station coverage gap: 176°
Stations used: 166

Nearby

Within 100 km, magnitude 1.5 and up: 111 in the 60 days after this one and 66 in the 30 days before it.

After

The first 60 of 111.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000dzdl (also filed as ak0214ewyp77). Read Fri, Sep 25, 2026, 4:01 PM UTC.