Alaska earthquakes

M2.4 earthquake 155 km WSW of Adak, Alaska

A magnitude 2.4 earthquake struck 155 km WSW of Adak, Alaska on Fri, Aug 28, 2026, 9:58 PM HADT (06:58 UTC), 14 km (8 mi) below the surface.

A larger quake followed: M5.3 151 km WSW of Adak, Alaska. This one was a foreshock.

Map

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

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The earthquake

Magnitude: 2.4 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Fri, Aug 28, 2026, 9:58 PM HADT
UTC: 2026-08-29 06:58:57 UTC
Depth: 13.5 km (8.4 mi), shallow
Epicenter: 51.344° N, 178.706° W
Region: Alaska
Tsunami flag: No
Status: Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
2.4	ML, local (Richter)	Alaska Earthquake Center	Preferred · Reviewed · ±0.3 · 16 stations
1.67	ML, local (Richter)	AV	Final · ±0.105707648922164 · 1 stations

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 9.4 km horizontally, 3.4 km in depth
Magnitude uncertainty: ±0.30
Station coverage gap: 203°, poorly surrounded by stations
Stations used: 24

Nearby

Within 100 km, magnitude 1.5 and up: 151 since this one and 106 in the 30 days before it.

After

The first 60 of 151.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event aka2026rbvfqs (also filed as av94407928). Read Sun, Oct 4, 2026, 9:53 PM UTC.