Alaska earthquakes

M3.2 earthquake 201 km W of Adak, Alaska

A magnitude 3.2 earthquake struck 201 km W of Adak, Alaska on Wed, Mar 11, 2020, 7:36 PM HADT (04:36 UTC), 248 km (154 mi) below the surface.

A larger quake followed: M4.7 251 km W of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 3.2 (ml), minor
Local time: Wed, Mar 11, 2020, 7:36 PM HADT
UTC: 2020-03-12 04:36:54 UTC
Depth: 247.7 km (153.9 mi), intermediate-depth
Epicenter: 52.003° N, 179.562° 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 17.2 km horizontally, 10.9 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 158°
Stations used: 44

Nearby

Within 100 km, magnitude 1.5 and up: 83 in the 60 days after this one and 37 in the 30 days before it.

After

The first 60 of 83.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70008d9f (also filed as ak0203b5ak33). Read Wed, Sep 30, 2026, 4:11 AM UTC.