Alaska earthquakes

M1.6 earthquake 6 km ENE of Adak, Alaska

A magnitude 1.6 earthquake struck 6 km ENE of Adak, Alaska on Sat, Apr 11, 2026, 4:27 PM HADT (01:27 UTC), 15 km (10 mi) below the surface.

A larger quake followed: M4.9 43 km E of Adak, Alaska. This one was a foreshock.

Map

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

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The earthquake

Magnitude: 1.6 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Sat, Apr 11, 2026, 4:27 PM HADT
UTC: 2026-04-12 01:27:22 UTC
Depth: 15.3 km (9.5 mi), shallow
Epicenter: 51.905° N, 176.549° 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
1.6	ML, local (Richter)	Alaska Earthquake Center	Preferred · Reviewed · ±0.1 · 9 stations
1.1	ML, local (Richter)	AV	Final · ±0.314891877904791 · 7 stations

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 12.4 km horizontally, 7.5 km in depth
Magnitude uncertainty: ±0.10
Station coverage gap: 135°
Stations used: 12

Nearby

Within 100 km, magnitude 1.5 and up: 193 in the 60 days after this one and 89 in the 30 days before it.

After

The first 60 of 193.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event aka2026hdngfa (also filed as av94141903). Read Fri, Oct 2, 2026, 10:24 PM UTC.