Alaska earthquakes

M3.0 earthquake 79 km ENE of Adak, Alaska

A magnitude 3.0 earthquake struck 79 km ENE of Adak, Alaska on Mon, Jul 26, 2021, 9:45 AM HADT (18:45 UTC), 191 km (119 mi) below the surface.

A larger quake followed: M3.3 44 km NNE of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 3.0 (ml), minor
Local time: Mon, Jul 26, 2021, 9:45 AM HADT
UTC: 2021-07-26 18:45:26 UTC
Depth: 191.5 km (119.0 mi), intermediate-depth
Epicenter: 52.264° N, 175.657° 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 12.9 km horizontally, 7.0 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 172°
Stations used: 25

Nearby

Within 100 km, magnitude 1.5 and up: 137 in the 60 days after this one and 62 in the 30 days before it.

After

The first 60 of 137.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000f96s (also filed as ak0219in8cf9). Read Thu, Sep 24, 2026, 9:06 AM UTC.