Alaska earthquakes

M1.5 earthquake 129 km WSW of Adak, Alaska

A magnitude 1.5 earthquake struck 129 km WSW of Adak, Alaska on Fri, Aug 13, 2021, 5:33 AM HADT (14:33 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M6.1 187 km WSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
1.5 (ml), micro
Local time
UTC
2021-08-13 14:33:35 UTC
Depth
7.0 km (4.3 mi), shallow
Epicenter
51.632° N, 178.468° 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
44

Nearby

Within 100 km, magnitude 1.5 and up: 187 in the 60 days after this one and 93 in the 30 days before it.

After

The first 60 of 187.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021accgb05 (also filed as av91338501). Read Sun, Sep 27, 2026, 7:26 AM UTC.