Alaska earthquakes

M5.3 earthquake 254 km SE of Chiniak, Alaska

A magnitude 5.3 earthquake struck 254 km SE of Chiniak, Alaska on Thu, Jan 25, 2018, 4:09 PM AKST (01:09 UTC), 34 km (21 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: 5.3 (mww), moderate
Local time: Thu, Jan 25, 2018, 4:09 PM AKST
UTC: 2018-01-26 01:09:29 UTC
Depth: 34.4 km (21.4 mi), shallow
Epicenter: 56.031° N, 149.265° W
Region: Alaska
Strongest shaking: II, weak shaking
Tsunami flag: No
Status: Reviewed by a seismologist

Shaking

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

Strongest estimated: II, weak shaking
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: Oblique reverse
Moment magnitude: 5.3 Mww
Nodal plane 1: Strike 268°, dip 46°, rake 33°
Nodal plane 2: Strike 154°, dip 67°, rake 131°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 6.3 km horizontally, 3.0 km in depth
Magnitude uncertainty: ±0.04
Depth from: From location
Station coverage gap: 83°
Stations used: 345

Nearest places

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

Nearby

Within 100 km, magnitude 2.3 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 us2000cpji (also filed as ak18196426, ak018170mg8v, iscgem611660337). Read Mon, Sep 28, 2026, 7:17 PM UTC.