Alaska earthquakes

M1.9 earthquake 32 km SSW of Atka, Alaska

A magnitude 1.9 earthquake struck 32 km SSW of Atka, Alaska on Sat, Aug 12, 2017, 3:29 PM HADT (00:29 UTC), 71 km (44 mi) below the surface.

A larger quake followed: M4.4 77 km ESE of Adak, 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
2017-08-13 00:29:21 UTC
Depth
71.0 km (44.1 mi), intermediate-depth
Epicenter
51.941° N, 174.436° 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
13

Nearby

Within 100 km, magnitude 1.5 and up: 66 in the 60 days after this one and 51 in the 30 days before it.

After

The first 60 of 66.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak017ac43ckl (also filed as ak16508873). Read Sun, Oct 4, 2026, 6:28 AM UTC.