Alaska earthquakes

M1.9 earthquake 42 km SSW of Unalaska, Alaska

A magnitude 1.9 earthquake struck 42 km SSW of Unalaska, Alaska on Mon, Feb 29, 2016, 1:15 AM AKST (10:15 UTC), 90 km (56 mi) below the surface.

A larger quake followed: M3.5 68 km NE of Nikolski, Alaska. This one was a foreshock.

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

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The earthquake

Magnitude
1.9 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2016-02-29 10:15:02 UTC
Depth
89.6 km (55.7 mi), intermediate-depth
Epicenter
53.524° N, 166.806° 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
10

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 91 in the 60 days after this one and 50 in the 30 days before it.

After

The first 60 of 91.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0162readmo (also filed as ak12941739). Read Mon, Oct 5, 2026, 6:40 AM UTC.