Alaska earthquakes

M5.0 earthquake 156 km SW of Nikolski, Alaska

A magnitude 5.0 earthquake struck 156 km SW of Nikolski, Alaska on Thu, Aug 9, 1979, 9:25 PM GMT-10 (07:25 UTC), 33 km (21 mi) below the surface.

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The earthquake

Magnitude
5.0 (mb), moderate
Local time
UTC
1979-08-10 07:25:10 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
52.002° N, 170.573° 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.

Depth from
OPERATOR_ASSIGNED
Stations used
122

Nearby

Within 100 km, magnitude 2.0 and up: 0 in the 60 days after this one and 2 in the 30 days before it.

Before

  1. 4.5139 km SW of Nikolski, Alaska · 17210 days ago · 33 km deep · 20 km away
  2. 5.4160 km SW of Nikolski, Alaska · 17236 days ago · 39 km deep · 8 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00012b2 (also filed as iscgemsup660118). Read Tue, Sep 22, 2026, 10:52 AM UTC.