Alaska earthquakes

M4.5 earthquake 20 km SW of Adak, Alaska

A magnitude 4.5 earthquake struck 20 km SW of Adak, Alaska on Mon, Jan 14, 2019, 11:37 AM HAST (21:37 UTC), 65 km (41 mi) below the surface.

A larger quake followed: M5.0 25 km SW of Adak, Alaska. This one was a foreshock.

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

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The earthquake

Magnitude
4.5 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2019-01-14 21:37:49 UTC
Depth
65.2 km (40.5 mi), shallow
Epicenter
51.725° N, 176.817° 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.ScaleComputed byNotes
4.5mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · ±0.063 · 73 stations
4.4ML, local (Richter)Alaska Earthquake CenterPreliminary

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 7.9 km horizontally, 4.5 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
140°
Stations used
111

Nearby

Within 100 km, magnitude 1.5 and up: 125 in the 60 days after this one and 74 in the 30 days before it.

After

The first 60 of 125.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000j3w9 (also filed as ak019ni8zv7). Read Thu, Oct 1, 2026, 4:59 PM UTC.