Alaska earthquakes

M2.8 earthquake 163 km SSE of Atka, Alaska

A magnitude 2.8 earthquake struck 163 km SSE of Atka, Alaska on Sat, Feb 15, 2020, 9:38 PM HAST (07:38 UTC), 30 km (19 mi) below the surface.

A larger quake followed: M3.9 87 km SSE of Atka, Alaska. This one was a foreshock.

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

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The earthquake

Magnitude
2.8 (ml), micro
Local time
UTC
2020-02-16 07:38:08 UTC
Depth
29.9 km (18.6 mi), shallow
Epicenter
50.826° N, 173.339° 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.

Location uncertainty
About 11.6 km horizontally, 19.1 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
243°, poorly surrounded by stations
Stations used
15

Nearby

Within 100 km, magnitude 1.5 and up: 15 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 2.6142 km SSE of Atka, Alaska · 2414 days ago · 10 km deep · 30 km away
  2. 3.2173 km SSW of Atka, Alaska · 2410 days ago · 31 km deep · 98 km away
  3. 3.3167 km SSE of Atka, Alaska · 2410 days ago · 10 km deep · 6 km away
  4. 2.5167 km SSE of Atka, Alaska · 2409 days ago · 10 km deep · 11 km away
  5. 2.7205 km SSE of Atka, Alaska · 2407 days ago · 26 km deep · 42 km away
  6. 2.496 km SSE of Atka, Alaska · 2402 days ago · 25 km deep · 68 km away
  7. 2.4175 km SSE of Atka, Alaska · 2401 days ago · 24 km deep · 12 km away
  8. 2.5169 km S of Atka, Alaska · 2399 days ago · 10 km deep · 40 km away
  9. 3.0145 km SSE of Atka, Alaska · 2394 days ago · 10 km deep · 22 km away
  10. 2.976 km SSE of Atka, Alaska · 2382 days ago · 35 km deep · 91 km away
  11. 3.987 km SSE of Atka, Alaska · 2367 days ago · 27 km deep · 76 km away
  12. 2.4192 km SSE of Atka, Alaska · 2366 days ago · 10 km deep · 35 km away
  13. 2.891 km S of Atka, Alaska · 2361 days ago · 4 km deep · 79 km away
  14. 2.4186 km S of Atka, Alaska · 2361 days ago · 26 km deep · 39 km away
  15. 2.8Andreanof Islands, Aleutian Islands, Alaska · 2360 days ago · 30 km deep · 21 km away

Before

  1. 2.7155 km SSE of Atka, Alaska · 2424 days ago · 10 km deep · 18 km away
  2. 2.886 km SE of Atka, Alaska · 2428 days ago · 20 km deep · 88 km away
  3. 2.284 km SE of Atka, AK · 2437 days ago · 12 km deep · 84 km away
  4. 2.7184 km S of Atka, Alaska · 2441 days ago · 17 km deep · 41 km away
  5. 3.3204 km SSE of Atka, Alaska · 2447 days ago · 10 km deep · 49 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us60008452. Read Wed, Sep 30, 2026, 4:13 PM UTC.