Alaska earthquakes

M2.6 earthquake 140 km WSW of Adak, Alaska

A magnitude 2.6 earthquake struck 140 km WSW of Adak, Alaska on Wed, Sep 9, 2020, 12:29 PM HADT (21:29 UTC), 35 km (22 mi) below the surface.

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

More in Alaska

Map

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

Open the live map with earthquakes

The earthquake

Magnitude
2.6 (ml), micro
Local time
UTC
2020-09-09 21:29:01 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
51.204° N, 178.348° 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.

Location uncertainty
About 3.0 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.12
Depth from
Operator assigned
Station coverage gap
210°, poorly surrounded by stations
Stations used
30

Nearby

Within 100 km, magnitude 1.5 and up: 137 in the 60 days after this one and 97 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 us6000bzjl (also filed as ak020bmrn4ir). Read Wed, Sep 30, 2026, 5:57 PM UTC.