Alaska earthquakes

M2.6 earthquake 189 km SSE of Adak, Alaska

A magnitude 2.6 earthquake struck 189 km SSE of Adak, Alaska on Mon, Feb 15, 2016, 12:12 PM HAST (22:12 UTC), 20 km (12 mi) below the surface.

A larger quake followed: M2.8 203 km S of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude
2.6 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2016-02-15 22:12:23 UTC
Depth
20.0 km (12.4 mi), shallow
Epicenter
50.357° N, 175.410° 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.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 11.4 km horizontally, 2.0 km in depth
Depth from
Operator assigned
Stations used
11

Nearby

Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 4 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us10004sw7 (also filed as ak12828295). Read Mon, Oct 5, 2026, 1:19 PM UTC.