Alaska earthquakes

M1.8 earthquake 150 km WSW of Adak, Alaska

A magnitude 1.8 earthquake struck 150 km WSW of Adak, Alaska on Mon, Sep 23, 2019, 8:24 AM HADT (17:24 UTC), 12 km (8 mi) below the surface.

A larger quake followed: M4.5 150 km WSW 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
UTC
2019-09-23 17:24:31 UTC
Depth
12.1 km (7.5 mi), shallow
Epicenter
51.415° N, 178.682° 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
26

Nearby

Within 100 km, magnitude 1.5 and up: 175 in the 60 days after this one and 178 in the 30 days before it.

After

The first 60 of 175.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak019c877wfd. Read Thu, Oct 1, 2026, 8:49 PM UTC.