Alaska earthquakes

M1.9 earthquake 40 km ESE of Port Alsworth, Alaska

A magnitude 1.9 earthquake struck 40 km ESE of Port Alsworth, Alaska on Tue, Jun 15, 2021, 8:00 AM AKDT (16:00 UTC), 167 km (104 mi) below the surface.

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

A larger quake followed: M3.9 42 km ENE of Pedro Bay, 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: 1.9 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Tue, Jun 15, 2021, 8:00 AM AKDT
UTC: 2021-06-15 16:00:25 UTC
Depth: 167.1 km (103.8 mi), intermediate-depth
Epicenter: 60.103° N, 153.621° 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
1.9	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
2.6	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.037 · 94 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: 63

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 202 in the 60 days after this one and 88 in the 30 days before it.

After

The first 60 of at least 202.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0217msqlo2 (also filed as av91281106, us7000ed9r). Read Fri, Oct 2, 2026, 6:50 AM UTC.