Alaska earthquakes

M4.8 earthquake 232 km SE of Chiniak, Alaska

A magnitude 4.8 earthquake struck 232 km SE of Chiniak, Alaska on Mon, Apr 8, 2019, 11:57 AM AKDT (19:57 UTC), 7 km (4 mi) below the surface.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 4.8 (mww), light
Local time: Mon, Apr 8, 2019, 11:57 AM AKDT
UTC: 2019-04-08 19:57:41 UTC
Depth: 6.8 km (4.2 mi), shallow
Epicenter: 56.329° N, 149.271° W
Region: Alaska
Tsunami flag: Yes: a large quake in an oceanic region
Status: Reviewed by a seismologist

Tsunami

The USGS flags a quake this large in an oceanic region. The flag does not mean a tsunami happened; the tsunami warning centers decide that, and their messages are below when they issued any.

Current tsunami warnings: tsunami.gov. Warnings in force in the US also appear on our alerts pages.

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: 4.8 Mww
Nodal plane 1: Strike 317°, dip 76°, rake -174°
Nodal plane 2: Strike 226°, dip 84°, rake -14°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 6.2 km horizontally, 4.0 km in depth
Magnitude uncertainty: ±0.04
Depth from: From location
Station coverage gap: 141°
Stations used: 95

Nearest places

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

Nearby

Within 100 km, magnitude 1.8 and up: 166 in the 60 days after this one and 33 in the 30 days before it.

After

The first 60 of 166.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000kchr (also filed as at00ppnrg7, aacse0194iebk3v, ak0194iebk3v). Read Tue, Sep 22, 2026, 6:53 PM UTC.