Alaska earthquakes

M1.9 earthquake 26 km SSW of Atka, Alaska

A magnitude 1.9 earthquake struck 26 km SSW of Atka, Alaska on Sat, Aug 20, 2016, 8:37 PM HADT (05:37 UTC), 61 km (38 mi) below the surface.

A larger quake followed: M4.8 88 km SSE of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude
1.9 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2016-08-21 05:37:03 UTC
Depth
61.3 km (38.1 mi), shallow
Epicenter
51.974° N, 174.323° 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
11

Nearby

Within 100 km, magnitude 1.5 and up: 68 in the 60 days after this one and 68 in the 30 days before it.

After

The first 60 of 68.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak016ar2ybbw (also filed as ak13894351). Read Sat, Oct 3, 2026, 4:05 PM UTC.