Alaska earthquakes

M5.0 earthquake 95 km SSW of Atka, Alaska

A magnitude 5.0 earthquake struck 95 km SSW of Atka, Alaska on Sat, Jun 6, 1987, 4:23 AM HADT (13:23 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.9 84 km SSW of Atka, Alaska. This one was a foreshock.

More in Alaska

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
5.0 (mb, body-wave), moderate
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1987-06-06 13:23:45 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.360° N, 174.500° 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: 12 in the 60 days after this one and 2 in the 30 days before it.

After

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00035k0. Read Sat, Oct 3, 2026, 9:31 AM UTC.