Alaska earthquakes

M5.0 earthquake 36 km SE of Adak, Alaska

A magnitude 5.0 earthquake struck 36 km SE of Adak, Alaska on Mon, Jun 1, 1987, 2:39 AM HADT (11:39 UTC), 58 km (36 mi) below the surface.

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The earthquake

Magnitude: 5.0 (mw), moderate
Local time: Mon, Jun 1, 1987, 2:39 AM HADT
UTC: 1987-06-01 11:39:08 UTC
Depth: 57.6 km (35.8 mi), shallow
Epicenter: 51.657° N, 176.232° 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 2.0 and up: 11 in the 60 days after this one and 8 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00035et (also filed as gcmtb060187e, gcmt19870601113908). Read Wed, Sep 30, 2026, 4:33 PM UTC.