Alaska earthquakes

M5.0 earthquake 161 km SW of Nikolski, Alaska

A magnitude 5.0 earthquake struck 161 km SW of Nikolski, Alaska on Mon, Jul 19, 1982, 7:22 AM GMT-10 (17:22 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.2 93 km SSW of Nikolski, Alaska. This one was a foreshock.

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The earthquake

Magnitude
5.0 (mb), moderate
Local time
UTC
1982-07-19 17:22:28 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.913° N, 170.545° 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

Nearby

Within 100 km, magnitude 2.0 and up: 6 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 4.5172 km SSW of Nikolski, Alaska · 16134 days ago · 33 km deep · 49 km away
  2. 4.976 km SW of Nikolski, Alaska · 16133 days ago · 33 km deep · 85 km away
  3. 4.483 km SSW of Nikolski, Alaska · 16128 days ago · 33 km deep · 84 km away
  4. 4.690 km SSW of Nikolski, Alaska · 16128 days ago · 33 km deep · 94 km away
  5. 5.090 km SSW of Nikolski, Alaska · 16128 days ago · 33 km deep · 85 km away
  6. 5.293 km SSW of Nikolski, Alaska · 16105 days ago · 33 km deep · 78 km away

Before

  1. 4.7152 km SW of Nikolski, Alaska · 16137 days ago · 33 km deep · 11 km away
  2. 4.7177 km SW of Nikolski, Alaska · 16161 days ago · 41 km deep · 26 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001ngm (also filed as iscgemsup595578). Read Tue, Sep 22, 2026, 9:43 PM UTC.