Alaska earthquakes

M4.4 earthquake 250 km ESE of Chiniak, Alaska

A magnitude 4.4 earthquake struck 250 km ESE of Chiniak, Alaska on Fri, Jul 15, 2022, 2:33 PM AKDT (22:33 UTC), 10 km (6 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: 4.4 (mwr), light
Local time: Fri, Jul 15, 2022, 2:33 PM AKDT
UTC: 2022-07-15 22:33:31 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.411° N, 148.786° W
Region: Alaska
Strongest shaking: I, not felt shaking
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.

Shaking

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

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 normal
Moment magnitude: 4.4 Mwr
Nodal plane 1: Strike 28°, dip 39°, rake -120°
Nodal plane 2: Strike 245°, dip 57°, rake -68°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 3.4 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.06
Depth from: Operator assigned
Station coverage gap: 258°, poorly surrounded by stations
Stations used: 25

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 32 in the 60 days after this one and 23 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 us6000i2w5 (also filed as at00rf32nv, ak02290imot2). Read Thu, Sep 24, 2026, 9:49 AM UTC.