Alaska earthquakes

M1.7 earthquake 94 km SW of Adak, Alaska

A magnitude 1.7 earthquake struck 94 km SW of Adak, Alaska on Tue, Sep 18, 2018, 9:24 PM HADT (06:24 UTC), 52 km (32 mi) below the surface.

A larger quake followed: M4.8 126 km WSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
1.7 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2018-09-19 06:24:32 UTC
Depth
52.0 km (32.3 mi), shallow
Epicenter
51.305° N, 177.639° 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
12

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 186 in the 30 days before it.

After

The first 60 of at least 199.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak018c1eiqpn. Read Thu, Oct 1, 2026, 10:43 PM UTC.