Alaska earthquakes

M5.0 earthquake 240 km S of False Pass, Alaska

A magnitude 5.0 earthquake struck 240 km S of False Pass, Alaska on Sat, Oct 1, 2016, 2:07 PM AKDT (22:07 UTC), 28 km (18 mi) below the surface.

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Map

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

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The earthquake

Magnitude: 5.0 (Mww, W-phase moment), moderate
Magnitude from: USGS National Earthquake Information Center
Local time: Sat, Oct 1, 2016, 2:07 PM AKDT
UTC: 2016-10-01 22:07:55 UTC
Depth: 28.4 km (17.7 mi), shallow
Epicenter: 52.723° N, 162.807° W
Region: Alaska
Felt reports: 6
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
5.0	Mww, W-phase moment	USGS National Earthquake Information Center	Preferred · Reviewed
5.03	Mw, moment	ISC-GEM global catalog	Final · ±0.1
5.0	Mw, moment	Alaska Earthquake Center	Preliminary

Did you feel it?

6 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting: Normal
Moment magnitude: 5.0 Mww
Nodal plane 1: Strike 234°, dip 47°, rake -89°
Nodal plane 2: Strike 53°, dip 43°, rake -90°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 5.7 km horizontally, 4.1 km in depth
Depth from: From location
Station coverage gap: 73°
Stations used: 436

Nearest places

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

Akutan, AlaskaPopulation 1,040. Forecast252 kmSE

Nearby

Within 100 km, magnitude 2.0 and up: 71 in the 60 days after this one and 14 in the 30 days before it.

After

The first 60 of 71.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us10006ufy (also filed as ak016cn5xlg9, ak14129148, iscgem609570804). Read Sun, Oct 4, 2026, 9:37 AM UTC.