Alaska earthquakes

M2.5 earthquake 129 km S of Unalaska, Alaska

A magnitude 2.5 earthquake struck 129 km S of Unalaska, Alaska on Sat, May 21, 2022, 9:45 AM AKDT (17:45 UTC), 4 km (3 mi) below the surface.

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

Unalaska forecastMore in Alaska

Map

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

Open the live map with earthquakes

The earthquake

Magnitude
2.5 (ml), micro
Local time
UTC
2022-05-21 17:45:22 UTC
Depth
4.1 km (2.5 mi), shallow
Epicenter
52.713° N, 166.666° 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 4.2 km horizontally, 9.5 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
276°, poorly surrounded by stations
Stations used
12

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 98 in the 60 days after this one and 75 in the 30 days before it.

After

The first 60 of 98.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000i35f (also filed as ak0226hh60os). Read Mon, Sep 28, 2026, 12:17 AM UTC.