Alaska earthquakes

M4.8 earthquake 95 km SSE of Sand Point, Alaska

A magnitude 4.8 earthquake struck 95 km SSE of Sand Point, Alaska on Tue, Aug 11, 2026, 12:49 AM AKDT (08:49 UTC), 37 km (23 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: 4.8 (Mww, W-phase moment), light
Magnitude from: USGS National Earthquake Information Center
Local time: Tue, Aug 11, 2026, 12:49 AM AKDT
UTC: 2026-08-11 08:49:24 UTC
Depth: 36.8 km (22.9 mi), shallow
Epicenter: 54.524° N, 160.033° W
Region: Alaska
Felt reports: 2
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
4.8	Mww, W-phase moment	USGS National Earthquake Information Center	Preferred · Confirmed · ±0.073 · 18 stations
4.9	ML, local (Richter)	Alaska Earthquake Center	Reviewed · ±0.2 · 108 stations
4.8	Mwr, regional moment	USGS National Earthquake Information Center	Moment tensor · Preliminary

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: 1.2% of gravity
Peak ground velocity: 0.5 cm/s
Map: Automatic

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

Did you feel it?

2 people reported to the USGS what they felt; the strongest reported shaking was IV, light 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: 4.8 Mwr
Nodal plane 1: Strike 93°, dip 23°, rake 23°
Nodal plane 2: Strike 342°, dip 81°, rake 112°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 5.9 km horizontally, 7.2 km in depth
Magnitude uncertainty: ±0.07
Depth from: From location
Station coverage gap: 129°
Stations used: 108

Nearest places

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

Sand Point, AlaskaPopulation 1,064. Forecast95 kmSSE

Nearby

Within 100 km, magnitude 1.8 and up: 104 since this one and 72 in the 30 days before it.

After

The first 60 of 104.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000tjwh (also filed as aka2026pusnfi). Read Sat, Oct 3, 2026, 3:42 PM UTC.