Alaska earthquakes

M4.8 earthquake 49 km SW of False Pass, Alaska

A magnitude 4.8 earthquake struck 49 km SW of False Pass, Alaska on Fri, Jun 30, 2017, 4:08 AM AKDT (12:08 UTC), 98 km (61 mi) below the surface.

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: 4.8 (mb, body-wave), light
Magnitude from: USGS National Earthquake Information Center
Local time: Fri, Jun 30, 2017, 4:08 AM AKDT
UTC: 2017-06-30 12:08:33 UTC
Depth: 98.3 km (61.1 mi), intermediate-depth
Epicenter: 54.551° N, 163.966° W
Region: Alaska
Strongest shaking: IV, light 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
4.8	mb, body-wave	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.034 · 262 stations
4.8	mb, body-wave	Alaska Earthquake Center	Preliminary

Shaking

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

Strongest estimated: IV, light 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.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 5.5 km horizontally, 3.3 km in depth
Magnitude uncertainty: ±0.03
Depth from: From location
Station coverage gap: 71°
Stations used: 389

Nearest places

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

King Cove, AlaskaPopulation 1,009. Forecast120 kmWSW

Nearby

Within 100 km, magnitude 1.8 and up: 64 in the 60 days after this one and 30 in the 30 days before it.

After

The first 60 of 64.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us100095h9 (also filed as ak16241654, ak0178bjgt1e). Read Fri, Oct 2, 2026, 5:04 AM UTC.