Alaska earthquakes

M1.8 earthquake 67 km WSW of Atka, Alaska

A magnitude 1.8 earthquake struck 67 km WSW of Atka, Alaska on Sat, Aug 7, 2021, 10:40 AM HADT (19:40 UTC), 69 km (43 mi) below the surface.

A larger quake followed: M3.6 112 km SSW of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude
1.8 (ml), micro
Local time
UTC
2021-08-07 19:40:19 UTC
Depth
69.4 km (43.1 mi), shallow
Epicenter
51.911° N, 175.065° 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
18

Nearby

Within 100 km, magnitude 1.5 and up: 146 in the 60 days after this one and 53 in the 30 days before it.

After

The first 60 of 146.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021a2i8us5. Read Thu, Sep 24, 2026, 7:33 AM UTC.