Alaska earthquakes

M2.5 earthquake 139 km S of False Pass, Alaska

A magnitude 2.5 earthquake struck 139 km S of False Pass, Alaska on Thu, Aug 25, 2016, 1:16 PM AKDT (21:16 UTC), 50 km (31 mi) below the surface.

A larger quake followed: M4.7 117 km ESE of Akutan, Alaska. This one was a foreshock.

Akutan 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: 2.5 (ML, local (Richter)), micro
Magnitude from: USGS National Earthquake Information Center
Local time: Thu, Aug 25, 2016, 1:16 PM AKDT
UTC: 2016-08-25 21:16:13 UTC
Depth: 50.2 km (31.2 mi), shallow
Epicenter: 53.599° N, 163.352° 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
2.5	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.128 · 8 stations
2.5	ML, local (Richter)	Alaska Earthquake Center	Preliminary

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 11.9 km horizontally, 10.1 km in depth
Magnitude uncertainty: ±0.13
Stations used: 31

Nearest places

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

Akutan, AlaskaPopulation 1,040. Forecast170 kmESE

Nearby

Within 100 km, magnitude 1.5 and up: 64 in the 60 days after this one and 53 in the 30 days before it.

After

The first 60 of 64.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us20006u22 (also filed as ak016axyi5q9, ak13878845). Read Sat, Oct 3, 2026, 10:56 PM UTC.