Alaska earthquakes

M3.0 earthquake 104 km SE of False Pass, Alaska

A magnitude 3.0 earthquake struck 104 km SE of False Pass, Alaska on Mon, Sep 21, 2020, 12:47 AM AKDT (08:47 UTC), 30 km (18 mi) below the surface.

A larger quake followed: M4.4 104 km SE of King Cove, 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: 3.0 (ml), minor
Local time: Mon, Sep 21, 2020, 12:47 AM AKDT
UTC: 2020-09-21 08:47:38 UTC
Depth: 29.7 km (18.5 mi), shallow
Epicenter: 54.104° N, 162.453° W
Region: Alaska
Tsunami flag: No
Status: Reviewed by a seismologist

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 3.4 km horizontally, 12.1 km in depth
Magnitude uncertainty: ±0.08
Depth from: From location
Station coverage gap: 200°, poorly surrounded by stations
Stations used: 21

Nearest places

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

King Cove, AlaskaPopulation 1,009. Forecast107 kmS

Nearby

Within 100 km, magnitude 1.5 and up: 144 in the 60 days after this one and 73 in the 30 days before it.

After

The first 60 of 144.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000c3rm (also filed as ak020c6egle0). Read Fri, Sep 25, 2026, 3:58 PM UTC.