Alaska earthquakes

M4.0 earthquake 43 km WSW of Clear, Alaska, Alaska

A magnitude 4.0 earthquake struck 43 km WSW of Clear, Alaska, Alaska on Sun, Nov 6, 2016, 1:29 AM AKDT (09:29 UTC), 23 km (14 mi) below the surface.

A larger quake followed: M4.3 41 km W of Clear, Alaska, Alaska. This one was a foreshock.

Healy 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: 4.0 (Mw, moment), light
Magnitude from: Alaska Earthquake Center
Local time: Sun, Nov 6, 2016, 1:29 AM AKDT
UTC: 2016-11-06 09:29:10 UTC
Depth: 23.2 km (14.4 mi), shallow
Epicenter: 64.164° N, 150.063° W
Region: Alaska
Felt reports: 33
Strongest shaking: II, weak shaking
PAGER alert: Green
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
4.0	Mw, moment	Alaska Earthquake Center	Preferred · Preliminary
4.0	Mwr, regional moment	USGS National Earthquake Information Center	Reviewed · ±0.029 · 118 stations
4.1	ML, local (Richter)	USGS National Earthquake Information Center	Preliminary

What happened

The USGS’s account of the effects of this earthquake.

Felt (II) at Fairbanks. Also felt at Anderson, Clear and Healy.

From the USGS event page for ak016eaho2lt. U.S. Geological Survey text and figures are in the public domain.

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Map: Automatic

USGS ShakeMap: estimated shaking intensity around the epicenter — Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

33 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.

Estimated impact

The USGS PAGER system estimates deaths and economic losses from the shaking and the population and buildings exposed to it.

Alert level: Green: little or no damage or loss of life expected

Fault motion and ground failure

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

Faulting: Strike-slip
Moment magnitude: 4.0 Mwr
Nodal plane 1: Strike 24°, dip 65°, rake -4°
Nodal plane 2: Strike 116°, dip 86°, rake -155°

How well it is located

Reviewed by a seismologist.

Stations used: 159

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 76 in the 60 days after this one and 33 in the 30 days before it.

After

The first 60 of 76.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak016eaho2lt (also filed as us100075wr, us100075ud, ak14300236). Read Mon, Oct 5, 2026, 1:11 PM UTC.