Alaska earthquakes

M2.8 earthquake 101 km N of Adak, Alaska

A magnitude 2.8 earthquake struck 101 km N of Adak, Alaska on Sun, Mar 29, 2020, 9:54 AM HADT (18:54 UTC), 209 km (130 mi) below the surface.

A larger quake followed: M4.8 103 km NNE of Adak, 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, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2020-03-29 18:54:03 UTC
Depth
208.9 km (129.8 mi), intermediate-depth
Epicenter
52.778° N, 176.440° 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
2.8ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.128 · 8 stations
2.6ML, 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 20.2 km horizontally, 20.5 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
213°, poorly surrounded by stations
Stations used
26

Nearby

Within 100 km, magnitude 1.5 and up: 21 in the 60 days after this one and 16 in the 30 days before it.

After

  1. 1.741 km ENE of Adak, Alaska · 2377 days ago · 4 km deep · 82 km away
  2. 2.144 km ENE of Adak, Alaska · 2373 days ago · 9 km deep · 85 km away
  3. 2.246 km NE of Adak, Alaska · 2369 days ago · 208 km deep · 76 km away
  4. 2.042 km ENE of Adak, Alaska · 2366 days ago · 7 km deep · 87 km away
  5. 3.487 km NE of Adak, Alaska · 2364 days ago · 220 km deep · 68 km away
  6. 1.9Andreanof Islands, Aleutian Islands, Alaska · 2364 days ago · 5 km deep · 83 km away
  7. 2.167 km ENE of Adak, Alaska · 2362 days ago · 151 km deep · 76 km away
  8. 2.945 km ENE of Adak, Alaska · 2361 days ago · 148 km deep · 91 km away
  9. 2.870 km ENE of Adak, Alaska · 2358 days ago · 113 km deep · 85 km away
  10. 2.13 km N of Adak, Alaska · 2352 days ago · 118 km deep · 98 km away
  11. 4.8103 km NNE of Adak, Alaska · 2350 days ago · 224 km deep · 25 km away · tsunami flag
  12. 3.673 km ENE of Adak, Alaska · 2344 days ago · 142 km deep · 76 km away
  13. 2.862 km ENE of Adak, Alaska · 2343 days ago · 193 km deep · 89 km away
  14. 3.367 km NE of Adak, Alaska · 2336 days ago · 210 km deep · 62 km away
  15. 2.554 km NE of Adak, Alaska · 2333 days ago · 173 km deep · 75 km away
  16. 1.521 km NW of Adak, Alaska · 2332 days ago · 93 km deep · 93 km away
  17. 2.034 km NE of Adak, Alaska · 2330 days ago · 5 km deep · 82 km away
  18. 2.135 km ENE of Adak, Alaska · 2330 days ago · 6 km deep · 83 km away
  19. 1.835 km ENE of Adak, Alaska · 2323 days ago · 98 km deep · 88 km away
  20. 1.624 km ENE of Adak, Alaska · 2323 days ago · 9 km deep · 94 km away
  21. 3.442 km NNE of Adak, Alaska · 2320 days ago · 182 km deep · 60 km away

Before

  1. 1.743 km ENE of Adak, Alaska · 2380 days ago · 8 km deep · 86 km away
  2. 1.641 km ENE of Adak, Alaska · 2384 days ago · 3 km deep · 83 km away
  3. 2.315 km NW of Adak, Alaska · 2384 days ago · 188 km deep · 92 km away
  4. 3.017 km NNW of Adak, Alaska · 2388 days ago · 215 km deep · 86 km away
  5. 3.484 km N of Adak, Alaska · 2393 days ago · 221 km deep · 16 km away
  6. 2.541 km ENE of Adak, Alaska · 2395 days ago · 2 km deep · 83 km away
  7. 2.341 km ENE of Adak, Alaska · 2395 days ago · 5 km deep · 83 km away
  8. 1.743 km ENE of Adak, Alaska · 2400 days ago · 6 km deep · 83 km away
  9. 2.041 km ENE of Adak, Alaska · 2400 days ago · 3 km deep · 83 km away
  10. 2.467 km NE of Adak, Alaska · 2401 days ago · 172 km deep · 62 km away
  11. 4.041 km ENE of Adak, Alaska · 2402 days ago · 10 km deep · 88 km away
  12. 1.741 km ENE of Adak, Alaska · 2406 days ago · 5 km deep · 83 km away
  13. 1.939 km ENE of Adak, Alaska · 2407 days ago · 5 km deep · 82 km away
  14. 2.145 km ENE of Adak, Alaska · 2407 days ago · 7 km deep · 82 km away
  15. 1.840 km ENE of Adak, Alaska · 2408 days ago · 4 km deep · 82 km away
  16. 1.639 km ENE of Adak, Alaska · 2408 days ago · 5 km deep · 84 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70008qn7 (also filed as ak02043hvbeo). Read Sat, Oct 3, 2026, 7:51 AM UTC.