Alaska earthquakes

M4.8 earthquake 79 km S of Atka, Alaska

A magnitude 4.8 earthquake struck 79 km S of Atka, Alaska on Fri, Jun 5, 1987, 11:10 PM HADT (08:10 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.

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The earthquake

Magnitude
4.8 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1987-06-06 08:10:15 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.496° N, 174.425° 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 1.8 and up: 14 in the 60 days after this one and 1 in the 30 days before it.

After

  1. 5.095 km SSW of Atka, Alaska · 14362 days ago · 33 km deep · 16 km away
  2. 4.975 km SW of Atka, Alaska · 14360 days ago · 33 km deep · 35 km away
  3. 4.689 km SSE of Atka, Alaska · 14348 days ago · 33 km deep · 48 km away
  4. 5.388 km SSW of Atka, Alaska · 14333 days ago · 33 km deep · 19 km away
  5. 5.685 km SSW of Atka, Alaska · 14333 days ago · 33 km deep · 16 km away
  6. 5.984 km SSW of Atka, Alaska · 14332 days ago · 33 km deep · 21 km away
  7. 5.154 km SSW of Atka, Alaska · 14332 days ago · 33 km deep · 32 km away
  8. 4.3159 km SSW of Atka, Alaska · 14332 days ago · 33 km deep · 81 km away
  9. 4.265 km SSW of Atka, Alaska · 14332 days ago · 33 km deep · 23 km away
  10. 5.291 km SSW of Atka, Alaska · 14332 days ago · 33 km deep · 14 km away
  11. 5.083 km SSW of Atka, Alaska · 14332 days ago · 33 km deep · 7 km away
  12. 4.644 km SW of Atka, Alaska · 14332 days ago · 33 km deep · 49 km away
  13. 5.183 km SSW of Atka, Alaska · 14332 days ago · 33 km deep · 21 km away
  14. 4.793 km SE of Atka, Alaska · 14306 days ago · 33 km deep · 93 km away

Before

  1. 4.397 km ESE of Adak, Alaska · 14373 days ago · 33 km deep · 63 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00035jp. Read Thu, Oct 1, 2026, 9:20 AM UTC.