Alaska earthquakes

M1.8 earthquake 137 km WSW of Adak, Alaska

A magnitude 1.8 earthquake struck 137 km WSW of Adak, Alaska on Wed, Jun 15, 2016, 12:20 PM HADT (21:20 UTC), 22 km (13 mi) below the surface.

A larger quake followed: M5.3 130 km WSW of Adak, Alaska. This one was a foreshock.

Map

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

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The earthquake

Magnitude: 1.8 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Wed, Jun 15, 2016, 12:20 PM HADT
UTC: 2016-06-15 21:20:09 UTC
Depth: 21.5 km (13.4 mi), shallow
Epicenter: 51.548° N, 178.551° 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: at least 199 in the 60 days after this one and 81 in the 30 days before it.

After

The first 60 of at least 199.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0167ojdd7w (also filed as ak13657234). Read Sun, Oct 4, 2026, 12:43 PM UTC.