Alaska earthquakes

M5.0 earthquake 82 km SSE of False Pass, Alaska

A magnitude 5.0 earthquake struck 82 km SSE of False Pass, Alaska on Thu, Aug 20, 2020, 8:35 AM AKDT (16:35 UTC), 53 km (33 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: 5.0 (mww), moderate
Local time: Thu, Aug 20, 2020, 8:35 AM AKDT
UTC: 2020-08-20 16:35:10 UTC
Depth: 52.9 km (32.9 mi), shallow
Epicenter: 54.215° N, 162.776° W
Region: Alaska
Felt reports: 5
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

5 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting: Reverse (thrust)
Moment magnitude: 4.9 Mwr
Nodal plane 1: Strike 127°, dip 48°, rake 114°
Nodal plane 2: Strike 273°, dip 47°, rake 65°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 4.9 km horizontally, 5.2 km in depth
Magnitude uncertainty: ±0.04
Depth from: From location
Station coverage gap: 46°
Stations used: 261

Nearest places

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

King Cove, AlaskaPopulation 1,009. Forecast99 kmSSW

Nearby

Within 100 km, magnitude 2.0 and up: 66 in the 60 days after this one and 24 in the 30 days before it.

After

The first 60 of 66.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000bhtz (also filed as ak020aplyc6l, iscgem618743315). Read Sat, Sep 26, 2026, 11:18 PM UTC.