Alaska earthquakes

M2.5 earthquake 73 km SSW of Unalaska, Alaska

A magnitude 2.5 earthquake struck 73 km SSW of Unalaska, Alaska on Mon, May 16, 2022, 2:09 PM AKDT (22:09 UTC), 99 km (62 mi) below the surface.

A larger quake followed: M4.3 93 km ENE of Nikolski, Alaska. This one was a foreshock.

Unalaska forecast More in Alaska

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: Mon, May 16, 2022, 2:09 PM AKDT
UTC: 2022-05-16 22:09:09 UTC
Depth: 99.5 km (61.8 mi), intermediate-depth
Epicenter: 53.251° N, 166.898° 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 10.9 km horizontally, 14.4 km in depth
Magnitude uncertainty: ±0.10
Depth from: From location
Station coverage gap: 204°, poorly surrounded by stations
Stations used: 16

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast73 kmSSW

Nearby

Within 100 km, magnitude 1.5 and up: 142 in the 60 days after this one and 76 in the 30 days before it.

After

The first 60 of 142.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000i2i5 (also filed as ak02269a8opr). Read Mon, Sep 28, 2026, 2:28 AM UTC.