Alaska earthquakes

M3.9 earthquake 95 km ESE of Adak, Alaska

A magnitude 3.9 earthquake struck 95 km ESE of Adak, Alaska on Sun, Nov 10, 2019, 2:52 PM HAST (00:52 UTC), 51 km (32 mi) below the surface.

A larger quake followed: M6.3 95 km SE of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 3.9 (mb, body-wave), minor
Magnitude from: USGS National Earthquake Information Center
Local time: Sun, Nov 10, 2019, 2:52 PM HAST
UTC: 2019-11-11 00:52:40 UTC
Depth: 51.4 km (32.0 mi), shallow
Epicenter: 51.667° N, 175.295° 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
3.9	mb, body-wave	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.047 · 118 stations
3.9	ML, local (Richter)	Alaska Earthquake Center	Preliminary

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 4.7 km horizontally, 6.2 km in depth
Magnitude uncertainty: ±0.05
Depth from: From location
Station coverage gap: 134°
Stations used: 194

Nearby

Within 100 km, magnitude 1.5 and up: at least 200 in the 60 days after this one and 50 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 us60006ac5 (also filed as ak019egyljkv). Read Fri, Oct 2, 2026, 12:03 AM UTC.