Alaska earthquakes

M2.6 earthquake 16 km WNW of Atka, Alaska

A magnitude 2.6 earthquake struck 16 km WNW of Atka, Alaska on Sat, Aug 29, 2026, 1:03 PM HADT (22:03 UTC), 170 km (106 mi) below the surface.

A larger quake followed: M3.5 73 km SSW of Atka, Alaska. This one was a foreshock.

Map

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The earthquake

Magnitude: 2.6 (ML, local (Richter)), micro
Magnitude from: USGS National Earthquake Information Center
Local time: Sat, Aug 29, 2026, 1:03 PM HADT
UTC: 2026-08-29 22:03:48 UTC
Depth: 169.9 km (105.6 mi), intermediate-depth
Epicenter: 52.274° N, 174.407° 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
2.6	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Confirmed · ±0.097 · 14 stations
2.5	ML, local (Richter)	Alaska Earthquake Center	Reviewed · ±0.2 · 12 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 20.9 km horizontally, 10.4 km in depth
Magnitude uncertainty: ±0.10
Depth from: From location
Station coverage gap: 217°, poorly surrounded by stations
Stations used: 15

Nearby

Within 100 km, magnitude 1.5 and up: 37 since this one and 67 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000td9d (also filed as aka2026rczkgc). Read Sat, Oct 3, 2026, 12:47 PM UTC.