Alaska earthquakes

M2.5 earthquake 66 km W of Tyonek, Alaska

A magnitude 2.5 earthquake struck 66 km W of Tyonek, Alaska on Sun, Oct 9, 2016, 10:33 AM AKDT (18:33 UTC), 111 km (69 mi) below the surface.

A larger quake followed: M3.3 67 km WNW of Nikiski, Alaska. This one was a foreshock.

Nikiski forecast More in Alaska

Map

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

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The earthquake

Magnitude: 2.5 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Sun, Oct 9, 2016, 10:33 AM AKDT
UTC: 2016-10-09 18:33:38 UTC
Depth: 110.7 km (68.8 mi), intermediate-depth
Epicenter: 61.040° N, 152.366° W
Region: Alaska
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
2.5	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
2.5	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · 64 stations

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: 90

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: at least 201 in the 60 days after this one and 100 in the 30 days before it.

After

The first 60 of at least 201.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak016d0c068g (also filed as ak14192965, us20007cz6). Read Mon, Oct 5, 2026, 1:48 AM UTC.