Alaska earthquakes

M4.4 earthquake 154 km SSE of False Pass, Alaska

A magnitude 4.4 earthquake struck 154 km SSE of False Pass, Alaska on Thu, Jul 22, 2021, 5:12 AM AKDT (13:12 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.5 147 km S 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.

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The earthquake

Magnitude: 4.4 (mb), light
Local time: Thu, Jul 22, 2021, 5:12 AM AKDT
UTC: 2021-07-22 13:12:29 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 53.514° N, 162.795° W
Region: Alaska
Felt reports: 1
Strongest shaking: I, not felt shaking
Tsunami flag: No
Status: Reviewed by a seismologist

Shaking

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

Strongest estimated: I, not felt shaking
Peak ground acceleration: 0.0% of gravity
Peak ground velocity: -3.7 cm/s
Map: Automatic

USGS ShakeMap: estimated shaking intensity around the epicenter — Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

1 person 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 6.4 km horizontally, 1.9 km in depth
Magnitude uncertainty: ±0.06
Depth from: Operator assigned
Station coverage gap: 82°
Stations used: 36

Nearest places

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

King Cove, AlaskaPopulation 1,009. Forecast175 kmS

Nearby

Within 100 km, magnitude 1.5 and up: 124 in the 60 days after this one and 19 in the 30 days before it.

After

The first 60 of 124.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000exyc (also filed as ak0219bxwpz4). Read Wed, Sep 23, 2026, 11:24 AM UTC.