Alaska earthquakes

M2.5 earthquake 72 km NNE of Chickaloon, Alaska

A magnitude 2.5 earthquake struck 72 km NNE of Chickaloon, Alaska on Sun, May 16, 2021, 4:09 PM AKDT (00:09 UTC), 15 km (9 mi) below the surface.

Automatic solution: the magnitude and location may still be revised.

A larger quake followed: M6.1 73 km N of Chickaloon, Alaska. This one was a foreshock.

Sutton-Alpine forecast More in Alaska

Map

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

Open the live map with earthquakes

The earthquake

Magnitude: 2.5 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Sun, May 16, 2021, 4:09 PM AKDT
UTC: 2021-05-17 00:09:24 UTC
Depth: 14.9 km (9.3 mi), shallow
Epicenter: 62.436° N, 148.177° W
Region: Alaska
Tsunami flag: No
Status: Automatic solution, may be revised

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 · ±0.037 · 96 stations

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

An automatic solution; a seismologist may revise it.

Stations used: 71

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 200 in the 60 days after this one and 49 in the 30 days before it.

After

The first 60 of at least 200.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0216akoizt (also filed as us7000e3mu). Read Thu, Oct 1, 2026, 12:44 PM UTC.