Alaska earthquakes

M1.9 earthquake 127 km SW of Adak, Alaska

A magnitude 1.9 earthquake struck 127 km SW of Adak, Alaska on Mon, Apr 26, 2021, 9:13 PM HADT (06:13 UTC), 40 km (25 mi) below the surface.

A larger quake followed: M2.8 104 km WSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
1.9 (ml), micro
Local time
UTC
2021-04-27 06:13:34 UTC
Depth
40.1 km (24.9 mi), shallow
Epicenter
51.179° N, 178.100° 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.

Stations used
17

Nearby

Within 100 km, magnitude 1.5 and up: 67 in the 60 days after this one and 59 in the 30 days before it.

After

The first 60 of 67.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0215dlj2ce. Read Thu, Sep 24, 2026, 8:59 AM UTC.