Alaska earthquakes

M4.8 earthquake 88 km WSW of Adak, Alaska

A magnitude 4.8 earthquake struck 88 km WSW of Adak, Alaska on Wed, Jan 28, 1998, 12:47 AM HAST (10:47 UTC), 42 km (26 mi) below the surface.

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The earthquake

Magnitude
4.8 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1998-01-28 10:47:23 UTC
Depth
41.8 km (26.0 mi), shallow
Epicenter
51.491° N, 177.758° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

What happened

The USGS’s account of the effects of this earthquake.

Felt (III) on Adak.

From the USGS event page for usp0008f3f. U.S. Geological Survey text and figures are in the public domain.

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Depth from
CONSTRAINED_BY_DEPTH_PHASES

Nearby

Within 100 km, magnitude 1.8 and up: 8 in the 60 days after this one and 3 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0008f3f. Read Fri, Oct 2, 2026, 12:17 PM UTC.