Alaska earthquakes

M5.1 earthquake 134 km S of False Pass, Alaska

A magnitude 5.1 earthquake struck 134 km S of False Pass, Alaska on Thu, Oct 27, 2016, 4:44 AM AKDT (12:44 UTC), 19 km (12 mi) below the surface.

King Cove 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: 5.1 (Mww, W-phase moment), moderate
Magnitude from: USGS National Earthquake Information Center
Local time: Thu, Oct 27, 2016, 4:44 AM AKDT
UTC: 2016-10-27 12:44:59 UTC
Depth: 18.8 km (11.7 mi), shallow
Epicenter: 53.652° N, 163.297° 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
5.1	Mww, W-phase moment	USGS National Earthquake Information Center	Preferred · Reviewed
5.18	Mw, moment	ISC-GEM global catalog	Final · ±0.1
5.1	Mw, moment	Alaska Earthquake Center	Preliminary

Did you feel it?

No one has reported feeling this quake to the USGS.

Fault motion and ground failure

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

Faulting: Reverse (thrust)
Moment magnitude: 5.1 Mww
Nodal plane 1: Strike 67°, dip 71°, rake 88°
Nodal plane 2: Strike 252°, dip 19°, rake 94°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 7.3 km horizontally, 3.9 km in depth
Depth from: From location
Station coverage gap: 63°
Stations used: 86

Nearest places

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

King Cove, AlaskaPopulation 1,009. Forecast169 kmSSW

Nearby

Within 100 km, magnitude 2.1 and up: 132 in the 60 days after this one and 38 in the 30 days before it.

After

The first 60 of 132.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us100072c6 (also filed as ak14276667, ak016du067z8, iscgem609621309). Read Sat, Oct 3, 2026, 2:01 PM UTC.