Alaska earthquakes

M1.8 earthquake 152 km W of Adak, Alaska

A magnitude 1.8 earthquake struck 152 km W of Adak, Alaska on Wed, Nov 28, 2018, 5:11 PM HAST (03:11 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M5.9 Andreanof Islands, Aleutian Islands, Alaska. This one was a foreshock.

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The earthquake

Magnitude
1.8 (ML, local (Richter)), micro
Magnitude from
AV
Local time
UTC
2018-11-29 03:11:19 UTC
Depth
18.3 km (11.3 mi), shallow
Epicenter
51.657° N, 178.816° 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.

Location uncertainty
About 3.4 km horizontally, 2.8 km in depth
Depth from
From location
Station coverage gap
331°, poorly surrounded by stations
Stations used
5

Nearby

Within 100 km, magnitude 1.5 and up: 192 in the 60 days after this one and 69 in the 30 days before it.

After

The first 60 of 192.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event av61831931. Read Thu, Oct 1, 2026, 11:41 PM UTC.