Alaska earthquakes

M1.5 earthquake 208 km WSW of Adak, Alaska

A magnitude 1.5 earthquake struck 208 km WSW of Adak, Alaska on Thu, Aug 20, 2020, 7:55 PM HADT (04:55 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M4.8 193 km WSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
1.5 (ml), micro
Local time
UTC
2020-08-21 04:55:12 UTC
Depth
13.2 km (8.2 mi), shallow
Epicenter
51.349° N, 179.529° 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
23

Nearby

Within 100 km, magnitude 1.5 and up: 178 in the 60 days after this one and 81 in the 30 days before it.

After

The first 60 of 178.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak020ar2gra8. Read Tue, Sep 29, 2026, 1:17 PM UTC.