Alaska earthquakes

M3.7 earthquake Alaska Peninsula

A magnitude 3.7 earthquake struck in the Alaska Peninsula on Tue, Jul 21, 2020, 11:02 PM AKDT (07:02 UTC), 26 km (16 mi) below the surface.

A larger quake followed: M5.7 76 km ESE of Sand Point, Alaska. This one was a foreshock.

Sand Point 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: 3.7 (ml), minor
Local time: Tue, Jul 21, 2020, 11:02 PM AKDT
UTC: 2020-07-22 07:02:46 UTC
Depth: 25.5 km (15.8 mi), shallow
Epicenter: 55.117° N, 158.327° 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.

Stations used: 24

Nearest places

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

Sand Point, AlaskaPopulation 1,064. Forecast140 kmE

Nearby

Within 100 km, magnitude 1.5 and up: at least 200 in the 60 days after this one and 19 in the 30 days before it.

After

The first 60 of at least 200.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0209dhtcvc (also filed as us7000aswp). Read Tue, Sep 29, 2026, 8:51 PM UTC.