Alaska earthquakes

M2.6 earthquake 103 km SSW of Unalaska, Alaska

A magnitude 2.6 earthquake struck 103 km SSW of Unalaska, Alaska on Sun, Aug 4, 2019, 2:15 AM AKDT (10:15 UTC), 24 km (15 mi) below the surface.

A larger quake followed: M5.3 139 km ESE 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: 2.6 (ml), micro
Local time: Sun, Aug 4, 2019, 2:15 AM AKDT
UTC: 2019-08-04 10:15:17 UTC
Depth: 23.7 km (14.7 mi), shallow
Epicenter: 53.038° N, 167.213° 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 5.1 km horizontally, 12.0 km in depth
Magnitude uncertainty: ±0.13
Depth from: From location
Station coverage gap: 219°, poorly surrounded by stations
Stations used: 21

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast103 kmSSW

Nearby

Within 100 km, magnitude 1.5 and up: 109 in the 60 days after this one and 74 in the 30 days before it.

After

The first 60 of 109.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000585c (also filed as ak0199xe4jx3). Read Wed, Sep 30, 2026, 10:35 AM UTC.