Alaska earthquakes

M2.8 earthquake 143 km SSE of False Pass, Alaska

A magnitude 2.8 earthquake struck 143 km SSE of False Pass, Alaska on Mon, Aug 21, 2023, 7:46 AM AKDT (15:46 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.9 108 km SSW of False Pass, 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.

Open the live map with earthquakes

The earthquake

Magnitude: 2.8 (ml), micro
Local time: Mon, Aug 21, 2023, 7:46 AM AKDT
UTC: 2023-08-21 15:46:43 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 53.621° N, 162.789° 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 3.8 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.13
Depth from: Operator assigned
Station coverage gap: 231°, poorly surrounded by stations
Stations used: 18

Nearest places

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

King Cove, AlaskaPopulation 1,009. Forecast163 kmS

Nearby

Within 100 km, magnitude 1.5 and up: 59 in the 60 days after this one and 53 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 us7000kpx9 (also filed as ak023aplfchy). Read Mon, Sep 28, 2026, 7:04 PM UTC.