Alaska earthquakes

M4.2 earthquake 57 km S of King Cove, Alaska

A magnitude 4.2 earthquake struck 57 km S of King Cove, Alaska on Sun, Jun 3, 2018, 9:38 PM AKDT (05:38 UTC), 74 km (46 mi) below the surface.

A larger quake followed: M5.3 102 km S of Sand Point, Alaska. This one was a foreshock.

King Cove 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: 4.2 (mb, body-wave), light
Magnitude from: USGS National Earthquake Information Center
Local time: Sun, Jun 3, 2018, 9:38 PM AKDT
UTC: 2018-06-04 05:38:20 UTC
Depth: 74.0 km (46.0 mi), intermediate-depth
Epicenter: 54.543° N, 162.339° W
Region: Alaska
Felt reports: 2
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
4.2	mb, body-wave	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.075 · 50 stations
4.2	mb, body-wave	Alaska Earthquake Center	Preliminary
4.2	mb, body-wave	AACSE	Preliminary

What happened

The USGS’s account of the effects of this earthquake.

Also felt at Sand Point.

From the USGS event page for us1000eicv. U.S. Geological Survey text and figures are in the public domain.

Did you feel it?

2 people reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 4.0 km horizontally, 7.9 km in depth
Magnitude uncertainty: ±0.07
Depth from: From location
Station coverage gap: 146°
Stations used: 215

Nearest places

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

King Cove, AlaskaPopulation 1,009. Forecast58 kmS

Nearby

Within 100 km, magnitude 1.5 and up: 82 in the 60 days after this one and 51 in the 30 days before it.

After

The first 60 of 82.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000eicv (also filed as ak19705123, ak01874fi5il, aacse01874fi5il). Read Sat, Oct 3, 2026, 7:45 AM UTC.