Alaska earthquakes

M2.5 earthquake 93 km SW of Atka, Alaska

A magnitude 2.5 earthquake struck 93 km SW of Atka, Alaska on Sun, Feb 16, 2020, 5:50 PM HAST (03:50 UTC), 31 km (20 mi) below the surface.

A larger quake followed: M4.8 117 km SSW of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude
2.5 (ml), micro
Local time
UTC
2020-02-17 03:50:52 UTC
Depth
31.4 km (19.5 mi), shallow
Epicenter
51.596° N, 175.152° 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 4.0 km horizontally, 10.4 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
232°, poorly surrounded by stations
Stations used
36

Nearby

Within 100 km, magnitude 1.5 and up: 130 in the 60 days after this one and 104 in the 30 days before it.

After

The first 60 of 130.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us600088a7 (also filed as ak02027fvsdo). Read Wed, Sep 30, 2026, 4:14 PM UTC.