Alaska earthquakes

M4.6 earthquake 69 km SE of Unalaska, Alaska

A magnitude 4.6 earthquake struck 69 km SE of Unalaska, Alaska on Sun, Aug 7, 2022, 6:01 AM AKDT (14:01 UTC), 43 km (27 mi) below the surface.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
4.6 (mb), light
Local time
UTC
2022-08-07 14:01:46 UTC
Depth
43.1 km (26.8 mi), shallow
Epicenter
53.484° N, 165.707° W
Region
Alaska
Felt reports
2
Strongest shaking
II, weak 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
II, weak shaking
Peak ground acceleration
0.2% of gravity
Peak ground velocity
-2.8 cm/s
Map
Automatic
USGS ShakeMap: estimated shaking intensity around the epicenter
Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

2 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 4.6 km horizontally, 6.0 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
163°
Stations used
116

Nearest places

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

Nearby

Within 100 km, magnitude 1.6 and up: 137 in the 60 days after this one and 68 in the 30 days before it.

After

The first 60 of 137.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000i8wb (also filed as ak022a2f1dyu). Read Tue, Sep 29, 2026, 7:17 PM UTC.