Alaska earthquakes

M1.6 earthquake 68 km SE of Unalaska, Alaska

A magnitude 1.6 earthquake struck 68 km SE of Unalaska, Alaska on Mon, Sep 27, 2021, 3:13 PM AKDT (23:13 UTC), 23 km (14 mi) below the surface.

A larger quake followed: M2.1 60 km SSE of Akutan, Alaska. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.6 (ml), micro
Local time
UTC
2021-09-27 23:13:25 UTC
Depth
22.9 km (14.2 mi), shallow
Epicenter
53.472° N, 165.749° 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
14

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 112 in the 60 days after this one and 50 in the 30 days before it.

After

The first 60 of 112.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021cewviiz. Read Thu, Sep 24, 2026, 8:08 AM UTC.