Alaska earthquakes

M3.3 earthquake 248 km W of Adak, Alaska

A magnitude 3.3 earthquake struck 248 km W of Adak, Alaska on Tue, May 5, 2026, 5:16 AM GMT+12 (17:16 UTC), 165 km (102 mi) below the surface.

A larger quake followed: M5.8 296 km WSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 3.3 (ML, local (Richter)), minor
Magnitude from: USGS National Earthquake Information Center
Local time: Tue, May 5, 2026, 5:16 AM GMT+12
UTC: 2026-05-04 17:16:27 UTC
Depth: 164.8 km (102.4 mi), intermediate-depth
Epicenter: 51.873° N, 179.757° E
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
3.3	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.097 · 14 stations
3.1	ML, local (Richter)	Alaska Earthquake Center	Reviewed · ±0.1 · 19 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 8.9 km horizontally, 4.3 km in depth
Magnitude uncertainty: ±0.10
Depth from: From location
Station coverage gap: 114°
Stations used: 17

Nearby

Within 100 km, magnitude 1.5 and up: 103 in the 60 days after this one and 18 in the 30 days before it.

After

The first 60 of 103.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000svfy (also filed as aka2026iungrd). Read Sat, Oct 3, 2026, 10:45 AM UTC.