Alaska earthquakes

M1.9 earthquake 50 km ESE of Port Alsworth, Alaska

A magnitude 1.9 earthquake struck 50 km ESE of Port Alsworth, Alaska on Sat, Oct 2, 2021, 9:55 PM AKDT (05:55 UTC), 162 km (100 mi) below the surface.

A larger quake followed: M4.0 57 km ESE of Pedro Bay, Alaska. This one was a foreshock.

Happy Valley 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: 1.9 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Sat, Oct 2, 2021, 9:55 PM AKDT
UTC: 2021-10-03 05:55:26 UTC
Depth: 161.5 km (100.4 mi), intermediate-depth
Epicenter: 60.099° N, 153.438° 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: 37

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 170 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 ak021cojmsrg. Read Fri, Oct 2, 2026, 2:29 PM UTC.