Alaska earthquakes

M1.8 earthquake 47 km SSE of Adak, Alaska

A magnitude 1.8 earthquake struck 47 km SSE of Adak, Alaska on Fri, Jun 29, 2018, 8:48 PM HADT (05:48 UTC), 22 km (14 mi) below the surface.

A larger quake followed: M4.2 44 km SW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 1.8 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Fri, Jun 29, 2018, 8:48 PM HADT
UTC: 2018-06-30 05:48:25 UTC
Depth: 22.4 km (13.9 mi), shallow
Epicenter: 51.494° N, 176.307° 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: 16

Nearby

Within 100 km, magnitude 1.5 and up: 193 in the 60 days after this one and 79 in the 30 days before it.

After

The first 60 of 193.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0188bfjbrv (also filed as ak19813011). Read Thu, Oct 1, 2026, 10:18 PM UTC.