Alaska earthquakes

M4.1 earthquake 30 km W of Anchor Point, Alaska

A magnitude 4.1 earthquake struck 30 km W of Anchor Point, Alaska on Tue, Mar 31, 2026, 7:44 AM AKDT (15:44 UTC), 83 km (51 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: 4.1 (ML, local (Richter)), light
Magnitude from: Alaska Earthquake Center
Local time: Tue, Mar 31, 2026, 7:44 AM AKDT
UTC: 2026-03-31 15:44:28 UTC
Depth: 82.7 km (51.4 mi), intermediate-depth
Epicenter: 59.768° N, 152.381° W
Region: Alaska
Felt reports: 19
Strongest shaking: III, weak shaking
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
4.1	ML, local (Richter)	Alaska Earthquake Center	Preferred · Reviewed · ±0.2 · 157 stations
4.1	Mwr, regional moment	USGS National Earthquake Information Center	Reviewed · ±0.039 · 64 stations

Shaking

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

Strongest estimated: III, weak shaking
Peak ground acceleration: 0.4% of gravity
Peak ground velocity: 0.2 cm/s
Map: Automatic

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

Did you feel it?

19 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: Strike-slip
Moment magnitude: 4.1 Mwr
Nodal plane 1: Strike 43°, dip 72°, rake 14°
Nodal plane 2: Strike 308°, dip 76°, rake 162°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 1.9 km horizontally, 1.3 km in depth
Magnitude uncertainty: ±0.20
Station coverage gap: 74°
Stations used: 246

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 199 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 199.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event aka2026gioyfa (also filed as us7000s956). Read Mon, Oct 5, 2026, 3:39 AM UTC.