Alaska earthquakes

M1.5 earthquake 39 km NE of Adak, Alaska

A magnitude 1.5 earthquake struck 39 km NE of Adak, Alaska on Tue, May 25, 2021, 4:30 PM HADT (01:30 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.0 49 km ESE of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
1.5 (ml), micro
Local time
UTC
2021-05-26 01:30:37 UTC
Depth
9.8 km (6.1 mi), shallow
Epicenter
52.104° N, 176.204° 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 1.1 km horizontally, 0.9 km in depth
Magnitude uncertainty
±0.33
Depth from
From location
Station coverage gap
213°, poorly surrounded by stations
Stations used
6

Nearby

Within 100 km, magnitude 1.5 and up: 101 in the 60 days after this one and 27 in the 30 days before it.

After

The first 60 of 101.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event av91251361. Read Thu, Sep 24, 2026, 1:29 PM UTC.