Alaska earthquakes

M5.1 earthquake 141 km SSE of Sand Point, Alaska

A magnitude 5.1 earthquake struck 141 km SSE of Sand Point, Alaska on Fri, Sep 5, 2025, 10:25 PM AKDT (06:25 UTC), 10 km (6 mi) below the surface.

Sand 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: 5.1 (Mww, W-phase moment), moderate
Magnitude from: USGS National Earthquake Information Center
Local time: Fri, Sep 5, 2025, 10:25 PM AKDT
UTC: 2025-09-06 06:25:25 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 54.109° N, 159.942° W
Region: Alaska
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
5.1	Mww, W-phase moment	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.053 · 34 stations
4.8	ML, local (Richter)	Alaska Earthquake Center	Preliminary
5.1	Mwr, regional moment	USGS National Earthquake Information Center	Moment tensor · Reviewed
5.2	Mww, W-phase moment	USGS, automatic first solution	First automatic solution · Confirmed

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: 0.6% of gravity
Peak ground velocity: 0.3 cm/s
Map: Automatic

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

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: Strike-slip
Moment magnitude: 5.1 Mww
Nodal plane 1: Strike 256°, dip 87°, rake -24°
Nodal plane 2: Strike 347°, dip 66°, rake -177°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 4.5 km horizontally, 1.8 km in depth
Magnitude uncertainty: ±0.05
Depth from: Operator assigned
Station coverage gap: 155°
Stations used: 232

Nearest places

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

Sand Point, AlaskaPopulation 1,064. Forecast141 kmSSE

Nearby

Within 100 km, magnitude 2.1 and up: 28 in the 60 days after this one and at least 200 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000qucj (also filed as usauto7000qucj, ak025bfwjfr1). Read Mon, Oct 5, 2026, 6:32 AM UTC.