Alaska earthquakes

M4.9 earthquake 236 km WSW of Adak, Alaska

A magnitude 4.9 earthquake struck 236 km WSW of Adak, Alaska on Sun, Jan 26, 2020, 12:29 AM HAST (10:29 UTC), 32 km (20 mi) below the surface.

A larger quake followed: M5.7 246 km WSW of Adak, Alaska. This one was a foreshock.

Map

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

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The earthquake

Magnitude: 4.9 (mb), light
Local time: Sun, Jan 26, 2020, 12:29 AM HAST
UTC: 2020-01-26 10:29:16 UTC
Depth: 32.0 km (19.9 mi), shallow
Epicenter: 51.148° N, 179.841° 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 3.8 km horizontally, 5.4 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 171°
Stations used: 116

Nearby

Within 100 km, magnitude 1.9 and up: 148 in the 60 days after this one and 92 in the 30 days before it.

After

The first 60 of 148.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us60007ges (also filed as ak0201763lrk). Read Wed, Sep 30, 2026, 9:47 PM UTC.