Alaska earthquakes

M2.8 earthquake 42 km S of Unalaska, Alaska

A magnitude 2.8 earthquake struck 42 km S of Unalaska, Alaska on Wed, May 22, 2019, 1:54 AM AKDT (09:54 UTC), 71 km (44 mi) below the surface.

A larger quake followed: M5.5 92 km E of Nikolski, 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
2.8 (ml), micro
Local time
UTC
2019-05-22 09:54:15 UTC
Depth
71.4 km (44.4 mi), intermediate-depth
Epicenter
53.496° N, 166.640° 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 6.4 km horizontally, 17.4 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
196°, poorly surrounded by stations
Stations used
35

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 109 in the 60 days after this one and 24 in the 30 days before it.

After

The first 60 of 109.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70003vjp (also filed as ak0196izzshv). Read Wed, Sep 30, 2026, 11:17 PM UTC.