Alaska earthquakes

M1.9 earthquake 222 km WSW of Adak, Alaska

A magnitude 1.9 earthquake struck 222 km WSW of Adak, Alaska on Fri, Jun 29, 2018, 9:23 PM HADT (06:23 UTC), 36 km (22 mi) below the surface.

A larger quake followed: M4.5 Rat Islands, Aleutian Islands, Alaska. This one was a foreshock.

More in Alaska

Map

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

Open the live map with earthquakes

The earthquake

Magnitude
1.9 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2018-06-30 06:23:40 UTC
Depth
36.1 km (22.4 mi), shallow
Epicenter
51.109° N, 179.590° 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
15

Nearby

Within 100 km, magnitude 1.5 and up: 139 in the 60 days after this one and 61 in the 30 days before it.

After

The first 60 of 139.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0188bfzfkx (also filed as ak19847857). Read Fri, Oct 2, 2026, 4:11 AM UTC.