Alaska earthquakes

M3.2 earthquake 27 km N of Chignik Lagoon, Alaska

A magnitude 3.2 earthquake struck 27 km N of Chignik Lagoon, Alaska on Sun, Jun 10, 2018, 5:19 PM AKDT (01:19 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M4.6 42 km ENE of Port Heiden, Alaska. This one was a foreshock.

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: 3.2 (ML, local (Richter)), minor
Magnitude from: Alaska Earthquake Center
Local time: Sun, Jun 10, 2018, 5:19 PM AKDT
UTC: 2018-06-11 01:19:20 UTC
Depth: 9.0 km (5.6 mi), shallow
Epicenter: 56.554° N, 158.483° 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
3.2	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
3.2	ML, local (Richter)	AACSE	Preliminary
3.2	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed

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: 146.0% of gravity
Peak ground velocity: 0.2 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.

How well it is located

Reviewed by a seismologist.

Stations used: 50

Nearest places

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

Sand Point, AlaskaPopulation 1,064. Forecast185 kmNE

Nearby

Within 100 km, magnitude 1.5 and up: 76 in the 60 days after this one and 19 in the 30 days before it.

After

The first 60 of 76.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0187fxrrrx (also filed as ak19756992, us1000emzg, aacse0187fxrrrx). Read Sat, Oct 3, 2026, 10:44 AM UTC.