Alaska earthquakes

M2.6 earthquake 45 km SSE of Adak, Alaska

A magnitude 2.6 earthquake struck 45 km SSE of Adak, Alaska on Sat, May 23, 2020, 12:42 PM HADT (21:42 UTC), 50 km (31 mi) below the surface.

A larger quake followed: M5.2 52 km WNW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
2.6 (ml), micro
Local time
UTC
2020-05-23 21:42:40 UTC
Depth
50.1 km (31.1 mi), shallow
Epicenter
51.529° N, 176.279° 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 5.7 km horizontally, 14.3 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
224°, poorly surrounded by stations
Stations used
24

Nearby

Within 100 km, magnitude 1.5 and up: 181 in the 60 days after this one and 126 in the 30 days before it.

After

The first 60 of 181.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000a6tk (also filed as ak0206mi561a). Read Tue, Sep 29, 2026, 5:17 PM UTC.