Alaska earthquakes

M2.1 earthquake 186 km SW of Adak, Alaska

A magnitude 2.1 earthquake struck 186 km SW of Adak, Alaska on Sat, Aug 19, 2017, 2:11 PM HADT (23:11 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M5.1 125 km WSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
2.1 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2017-08-19 23:11:15 UTC
Depth
20.8 km (12.9 mi), shallow
Epicenter
50.812° N, 178.706° 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: 192 in the 60 days after this one and 182 in the 30 days before it.

After

The first 60 of 192.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak017amewj2r (also filed as ak16750059). Read Fri, Oct 2, 2026, 3:05 PM UTC.