Alaska earthquakes

M2.5 earthquake 97 km S of False Pass, Alaska

A magnitude 2.5 earthquake struck 97 km S of False Pass, Alaska on Sun, Apr 15, 2018, 7:31 AM AKDT (15:31 UTC), 22 km (14 mi) below the surface.

A larger quake followed: M5.5 160 km ESE of Akutan, Alaska. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
2.5 (ml), micro
Local time
UTC
2018-04-15 15:31:40 UTC
Depth
22.5 km (14.0 mi), shallow
Epicenter
53.977° N, 163.366° 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.

Location uncertainty
About 2.8 km horizontally, 17.3 km in depth
Depth from
From location
Station coverage gap
218°, poorly surrounded by stations
Stations used
15

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 176 in the 60 days after this one and 51 in the 30 days before it.

After

The first 60 of 176.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000dnf3 (also filed as ak19242922, ak0184twjo9z). Read Wed, Sep 30, 2026, 9:26 PM UTC.