Alaska earthquakes

M3.8 earthquake 40 km WSW of Anchor Point, Alaska

A magnitude 3.8 earthquake struck 40 km WSW of Anchor Point, Alaska on Mon, Jul 24, 2017, 1:26 PM AKDT (21:26 UTC), 93 km (58 mi) below the surface.

A larger quake followed: M4.9 43 km WNW of Happy Valley, Alaska. This one was a foreshock.

Anchor Point 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: 3.8 (Mw, moment), minor
Magnitude from: Alaska Earthquake Center
Local time: Mon, Jul 24, 2017, 1:26 PM AKDT
UTC: 2017-07-24 21:26:42 UTC
Depth: 92.8 km (57.7 mi), intermediate-depth
Epicenter: 59.665° N, 152.511° 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
3.8	Mw, moment	Alaska Earthquake Center	Preferred · Preliminary
3.8	Mwr, regional moment	USGS National Earthquake Information Center	Reviewed · ±0.083 · 14 stations

What happened

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

Felt lightly at Soldotna.

From the USGS event page for ak0179fdtwtr. U.S. Geological Survey text and figures are in the public domain.

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: Oblique normal
Moment magnitude: 3.8 Mwr
Nodal plane 1: Strike 224°, dip 90°, rake -34°
Nodal plane 2: Strike 314°, dip 56°, rake -180°

How well it is located

Reviewed by a seismologist.

Stations used: 232

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: at least 201 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 201.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0179fdtwtr (also filed as ak16375060, us2000a0j0). Read Fri, Oct 2, 2026, 11:01 PM UTC.