Alaska earthquakes

M2.7 earthquake 85 km SSW of Unalaska, Alaska

A magnitude 2.7 earthquake struck 85 km SSW of Unalaska, Alaska on Thu, Apr 30, 2020, 4:01 AM AKDT (12:01 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M4.5 23 km W of Dutch Harbor, 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: 2.7 (ml), micro
Local time: Thu, Apr 30, 2020, 4:01 AM AKDT
UTC: 2020-04-30 12:01:06 UTC
Depth: 35.0 km (21.7 mi), shallow
Epicenter: 53.135° N, 166.867° 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 3.2 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.13
Depth from: Operator assigned
Station coverage gap: 230°, poorly surrounded by stations
Stations used: 18

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast85 kmSSW

Nearby

Within 100 km, magnitude 1.5 and up: 153 in the 60 days after this one and 25 in the 30 days before it.

After

The first 60 of 153.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70009pbn (also filed as ak0205kb6f8d). Read Tue, Sep 29, 2026, 12:34 PM UTC.