Alaska earthquakes

M2.0 earthquake 160 km S of Adak, Alaska

A magnitude 2.0 earthquake struck 160 km S of Adak, Alaska on Tue, Jul 21, 2020, 1:53 PM HADT (22:53 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M3.3 182 km SSW 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
2.0 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2020-07-21 22:53:51 UTC
Depth
3.5 km (2.2 mi), shallow
Epicenter
50.434° N, 176.426° 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.

Stations used
14

Nearby

Within 100 km, magnitude 1.5 and up: 14 in the 60 days after this one and 17 in the 30 days before it.

After

  1. 1.778 km SSE of Adak, Alaska · 2258 days ago · 26 km deep · 90 km away
  2. 2.670 km SSE of Adak, Alaska · 2251 days ago · 27 km deep · 92 km away
  3. 1.665 km SSE of Adak, Alaska · 2250 days ago · 20 km deep · 97 km away
  4. 3.3182 km SSW of Adak, Alaska · 2245 days ago · 32 km deep · 61 km away
  5. 3.0172 km SSW of Adak, Alaska · 2245 days ago · 23 km deep · 62 km away
  6. 2.0115 km SSW of Adak, Alaska · 2244 days ago · 26 km deep · 74 km away
  7. 1.7163 km SSW of Adak, Alaska · 2241 days ago · 52 km deep · 49 km away
  8. 2.9218 km SSW of Adak, Alaska · 2238 days ago · 10 km deep · 92 km away
  9. 2.8178 km S of Adak, Alaska · 2231 days ago · 10 km deep · 24 km away
  10. 2.1180 km S of Adak, Alaska · 2227 days ago · 26 km deep · 21 km away
  11. 2.793 km S of Adak, Alaska · 2221 days ago · 22 km deep · 69 km away
  12. 2.568 km SSE of Adak, Alaska · 2221 days ago · 34 km deep · 95 km away
  13. 1.793 km SSE of Adak, Alaska · 2217 days ago · 26 km deep · 72 km away
  14. 2.3186 km SSW of Adak, Alaska · 2204 days ago · 26 km deep · 85 km away

Before

  1. 2.7167 km S of Adak, Alaska · 2263 days ago · 10 km deep · 7 km away
  2. 1.9195 km SSE of Adak, Alaska · 2264 days ago · 7 km deep · 81 km away
  3. 1.6198 km S of Adak, Alaska · 2266 days ago · 17 km deep · 43 km away
  4. 1.5179 km S of Adak, Alaska · 2266 days ago · 8 km deep · 21 km away
  5. 2.0193 km S of Adak, Alaska · 2266 days ago · 12 km deep · 60 km away
  6. 2.1135 km S of Adak, Alaska · 2266 days ago · 26 km deep · 27 km away
  7. 3.0190 km S of Adak, Alaska · 2266 days ago · 10 km deep · 48 km away
  8. 1.888 km SSE of Adak, Alaska · 2273 days ago · 0 km deep · 77 km away
  9. 1.778 km SSE of Adak, Alaska · 2274 days ago · 21 km deep · 84 km away
  10. 2.9179 km SSE of Adak, Alaska · 2275 days ago · 10 km deep · 84 km away
  11. 1.5Andreanof Islands, Aleutian Islands, Alaska · 2276 days ago · 31 km deep · 77 km away
  12. 1.9160 km S of Adak, Alaska · 2277 days ago · 26 km deep · 23 km away
  13. 1.6100 km SSE of Adak, Alaska · 2280 days ago · 13 km deep · 63 km away
  14. 2.667 km S of Adak, Alaska · 2281 days ago · 35 km deep · 98 km away
  15. 2.175 km SSE of Adak, Alaska · 2282 days ago · 20 km deep · 88 km away
  16. 3.4183 km SE of Adak, Alaska · 2287 days ago · 36 km deep · 94 km away
  17. 3.8189 km S of Adak, Alaska · 2292 days ago · 10 km deep · 47 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0209c3iggq. Read Fri, Oct 2, 2026, 8:24 AM UTC.