Alaska earthquakes

M4.9 earthquake 75 km SW of Atka, Alaska

A magnitude 4.9 earthquake struck 75 km SW of Atka, Alaska on Mon, Jun 8, 1987, 10:13 AM HADT (19:13 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.3 88 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
4.9 (mb), light
Local time
UTC
1987-06-08 19:13:14 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.655° N, 174.867° 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 1.9 and up: 12 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 4.386 km SSE of Adak, Alaska · 14344 days ago · 33 km deep · 100 km away
  2. 4.689 km SSE of Atka, Alaska · 14339 days ago · 33 km deep · 82 km away
  3. 5.388 km SSW of Atka, Alaska · 14324 days ago · 33 km deep · 24 km away
  4. 5.685 km SSW of Atka, Alaska · 14324 days ago · 33 km deep · 24 km away
  5. 5.984 km SSW of Atka, Alaska · 14323 days ago · 33 km deep · 19 km away
  6. 5.154 km SSW of Atka, Alaska · 14323 days ago · 33 km deep · 23 km away
  7. 4.3159 km SSW of Atka, Alaska · 14323 days ago · 33 km deep · 93 km away
  8. 4.265 km SSW of Atka, Alaska · 14323 days ago · 33 km deep · 18 km away
  9. 5.291 km SSW of Atka, Alaska · 14323 days ago · 33 km deep · 35 km away
  10. 5.083 km SSW of Atka, Alaska · 14323 days ago · 33 km deep · 32 km away
  11. 4.644 km SW of Atka, Alaska · 14323 days ago · 33 km deep · 32 km away
  12. 5.183 km SSW of Atka, Alaska · 14323 days ago · 33 km deep · 18 km away

Before

  1. 5.095 km SSW of Atka, Alaska · 14353 days ago · 33 km deep · 41 km away
  2. 4.879 km S of Atka, Alaska · 14353 days ago · 33 km deep · 35 km away
  3. 5.036 km SE of Adak, Alaska · 14358 days ago · 58 km deep · 94 km away
  4. 4.397 km ESE of Adak, Alaska · 14364 days ago · 33 km deep · 34 km away
  5. 4.581 km SSE of Adak, Alaska · 14367 days ago · 33 km deep · 97 km away
  6. 4.774 km SSE of Adak, Alaska · 14367 days ago · 33 km deep · 92 km away
  7. 5.061 km SE of Adak, Alaska · 14374 days ago · 33 km deep · 75 km away
  8. 4.760 km SE of Adak, Alaska · 14376 days ago · 33 km deep · 91 km away

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00035n0. Read Tue, Sep 22, 2026, 11:01 AM UTC.