Alaska earthquakes

M5.6 earthquake 235 km WSW of Adak, Alaska

A magnitude 5.6 earthquake struck 235 km WSW of Adak, Alaska on Fri, Apr 23, 1982, 12:18 PM GMT-11 (23:18 UTC), 44 km (27 mi) below the surface.

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The earthquake

Magnitude
5.6 (mb), moderate
Local time
UTC
1982-04-23 23:18:23 UTC
Depth
43.9 km (27.3 mi), shallow
Epicenter
51.178° N, 179.844° 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.

Nearby

Within 100 km, magnitude 2.5 and up: 2 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 3.9258 km SW of Adak, Alaska · 16183 days ago · 33 km deep · 87 km away
  2. 5.0141 km WSW of Adak, Alaska · 16169 days ago · 49 km deep · 97 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001kwq (also filed as gcmtb042382a, ushis3747, gcmt19820423231823, iscgem601134). Read Tue, Sep 22, 2026, 6:31 AM UTC.