Alaska earthquakes

M2.7 earthquake 143 km E of Atka, Alaska

A magnitude 2.7 earthquake struck 143 km E of Atka, Alaska on Fri, Aug 16, 2019, 3:00 PM HADT (00:00 UTC), 47 km (29 mi) below the surface.

A larger quake followed: M4.2 70 km ENE 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
2.7 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2019-08-17 00:00:19 UTC
Depth
47.0 km (29.2 mi), shallow
Epicenter
52.183° N, 172.105° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
2.7ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed
2.7ML, local (Richter)Alaska Earthquake CenterPreliminary

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 7.9 km horizontally, 10.1 km in depth
Stations used
20

Nearby

Within 100 km, magnitude 1.5 and up: 19 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 3.264 km NE of Atka, Alaska · 2601 days ago · 21 km deep · 97 km away
  2. 4.270 km ENE of Atka, Alaska · 2597 days ago · 14 km deep · 93 km away
  3. 1.661 km E of Atka, Alaska · 2594 days ago · 20 km deep · 82 km away
  4. 2.465 km E of Atka, Alaska · 2592 days ago · 17 km deep · 78 km away
  5. 2.675 km ESE of Atka, Alaska · 2592 days ago · 11 km deep · 71 km away
  6. 2.683 km ESE of Atka, Alaska · 2591 days ago · 35 km deep · 79 km away
  7. 4.1177 km E of Atka, Alaska · 2589 days ago · 45 km deep · 38 km away
  8. 2.9173 km WSW of Nikolski, Alaska · 2581 days ago · 35 km deep · 63 km away
  9. 2.475 km E of Atka, Alaska · 2573 days ago · 7 km deep · 68 km away
  10. 3.0174 km ESE of Atka, Alaska · 2568 days ago · 35 km deep · 61 km away
  11. 2.1134 km E of Atka, Alaska · 2564 days ago · 52 km deep · 9 km away
  12. 2.6161 km SW of Nikolski, Alaska · 2555 days ago · 35 km deep · 93 km away
  13. 2.8107 km ESE of Atka, Alaska · 2554 days ago · 19 km deep · 62 km away
  14. 2.8171 km E of Atka, Alaska · 2553 days ago · 26 km deep · 29 km away
  15. 2.2117 km ESE of Atka, Alaska · 2551 days ago · 8 km deep · 67 km away
  16. 3.5182 km E of Atka, Alaska · 2546 days ago · 35 km deep · 41 km away
  17. 2.8165 km SW of Nikolski, Alaska · 2546 days ago · 35 km deep · 85 km away
  18. 2.5165 km SW of Nikolski, Alaska · 2546 days ago · 35 km deep · 87 km away
  19. 3.8176 km W of Nikolski, Alaska · 2545 days ago · 114 km deep · 73 km away

Before

  1. 1.880 km ESE of Atka, Alaska · 2607 days ago · 34 km deep · 84 km away
  2. 2.066 km ESE of Atka, Alaska · 2608 days ago · 56 km deep · 88 km away
  3. 3.786 km ESE of Atka, Alaska · 2609 days ago · 27 km deep · 75 km away
  4. 3.7171 km SW of Nikolski, Alaska · 2609 days ago · 35 km deep · 83 km away
  5. 2.879 km SE of Atka, Alaska · 2615 days ago · 35 km deep · 94 km away
  6. 3.7169 km ESE of Atka, Alaska · 2619 days ago · 49 km deep · 39 km away
  7. 2.174 km SE of Atka, Alaska · 2623 days ago · 28 km deep · 98 km away
  8. 2.779 km ESE of Atka, Alaska · 2626 days ago · 35 km deep · 87 km away
  9. 2.177 km ESE of Atka, Alaska · 2630 days ago · 83 km deep · 76 km away
  10. 1.9129 km E of Atka, Alaska · 2633 days ago · 49 km deep · 22 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70005mty (also filed as ak019aiq2iml). Read Fri, Oct 2, 2026, 1:03 AM UTC.