Alaska earthquakes

M4.4 earthquake 217 km WSW of Adak, Alaska

A magnitude 4.4 earthquake struck 217 km WSW of Adak, Alaska on Tue, Mar 2, 2021, 12:02 AM HAST (10:02 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M4.7 211 km WSW of Adak, Alaska. This one was a foreshock.

Map

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The earthquake

Magnitude: 4.4 (mb), light
Local time: Tue, Mar 2, 2021, 12:02 AM HAST
UTC: 2021-03-02 10:02:51 UTC
Depth: 14.7 km (9.1 mi), shallow
Epicenter: 50.865° N, 179.307° 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 7.8 km horizontally, 6.2 km in depth
Magnitude uncertainty: ±0.07
Depth from: From location
Station coverage gap: 226°, poorly surrounded by stations
Stations used: 79

Nearby

Within 100 km, magnitude 1.5 and up: 53 in the 60 days after this one and 50 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000deu4 (also filed as ak0212t1r5in). Read Fri, Sep 25, 2026, 11:21 PM UTC.