Alaska earthquakes

M2.7 earthquake 77 km SSW of Unalaska, Alaska

A magnitude 2.7 earthquake struck 77 km SSW of Unalaska, Alaska on Mon, Feb 15, 2016, 8:57 AM AKST (17:57 UTC), 26 km (16 mi) below the surface.

A larger quake followed: M4.1 Fox Islands, Aleutian Islands, Alaska. This one was a foreshock.

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Map

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

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The earthquake

Magnitude: 2.7 (ML, local (Richter)), micro
Magnitude from: USGS National Earthquake Information Center
Local time: Mon, Feb 15, 2016, 8:57 AM AKST
UTC: 2016-02-15 17:57:57 UTC
Depth: 25.6 km (15.9 mi), shallow
Epicenter: 53.194° N, 166.816° W
Region: Alaska
Felt reports: 1
Tsunami flag: No
Status: Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
2.7	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Reviewed · 29 stations
2.7	ML, local (Richter)	Alaska Earthquake Center	Preliminary

Did you feel it?

1 person reported to the USGS what they felt; the strongest reported shaking was I, not felt shaking.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 3.8 km horizontally, 8.5 km in depth
Stations used: 29

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast78 kmSSW

Nearby

Within 100 km, magnitude 1.5 and up: 95 in the 60 days after this one and 40 in the 30 days before it.

After

The first 60 of 95.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us10004svx (also filed as ak01624d6o9f, ak12825162). Read Mon, Oct 5, 2026, 12:00 PM UTC.