Alaska earthquakes

M3.6 earthquake 274 km WSW of Adak, Alaska

A magnitude 3.6 earthquake struck 274 km WSW of Adak, Alaska on Mon, Feb 10, 2020, 4:57 AM GMT+12 (16:57 UTC), 68 km (42 mi) below the surface.

A larger quake followed: M5.7 239 km WSW of Adak, Alaska. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
3.6 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2020-02-09 16:57:11 UTC
Depth
67.8 km (42.1 mi), shallow
Epicenter
51.455° N, 179.456° E
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
3.6ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.115 · 10 stations
2.9ML, 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 7.4 km horizontally, 8.3 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
147°
Stations used
20

Nearby

Within 100 km, magnitude 1.5 and up: 105 in the 60 days after this one and 161 in the 30 days before it.

After

  1. 2.9Rat Islands, Aleutian Islands, Alaska · 2426 days ago · 35 km deep · 77 km away
  2. 3.2271 km W of Adak, Alaska · 2426 days ago · 201 km deep · 70 km away
  3. 4.0244 km WSW of Adak, Alaska · 2426 days ago · 35 km deep · 60 km away
  4. 2.2Rat Islands, Aleutian Islands, Alaska · 2424 days ago · 101 km deep · 80 km away
  5. 2.6260 km WSW of Adak, Alaska · 2422 days ago · 64 km deep · 14 km away
  6. 2.2Rat Islands, Aleutian Islands, Alaska · 2420 days ago · 69 km deep · 70 km away
  7. 2.4243 km WSW of Adak, Alaska · 2419 days ago · 15 km deep · 68 km away
  8. 2.6226 km W of Adak, Alaska · 2418 days ago · 123 km deep · 64 km away
  9. 1.6264 km W of Adak, Alaska · 2418 days ago · 15 km deep · 48 km away
  10. 1.6258 km W of Adak, Alaska · 2418 days ago · 12 km deep · 55 km away
  11. 1.6258 km W of Adak, Alaska · 2418 days ago · 13 km deep · 52 km away
  12. 1.5258 km W of Adak, Alaska · 2418 days ago · 13 km deep · 56 km away
  13. 1.5257 km W of Adak, Alaska · 2417 days ago · 14 km deep · 51 km away
  14. 1.9239 km WSW of Adak, Alaska · 2417 days ago · 13 km deep · 63 km away
  15. 2.1207 km W of Adak, Alaska · 2416 days ago · 74 km deep · 66 km away
  16. 3.6Rat Islands, Aleutian Islands, Alaska · 2414 days ago · 157 km deep · 79 km away
  17. 2.1Rat Islands, Aleutian Islands, Alaska · 2414 days ago · -1 km deep · 90 km away
  18. 2.1244 km WSW of Adak, Alaska · 2413 days ago · 14 km deep · 54 km away
  19. 1.6261 km W of Adak, Alaska · 2413 days ago · 10 km deep · 50 km away
  20. 2.1192 km WSW of Adak, Alaska · 2412 days ago · 26 km deep · 95 km away
  21. 2.7244 km WSW of Adak, Alaska · 2412 days ago · 16 km deep · 56 km away
  22. 2.2211 km WSW of Adak, Alaska · 2411 days ago · 74 km deep · 63 km away
  23. 1.8Rat Islands, Aleutian Islands, Alaska · 2411 days ago · 8 km deep · 99 km away
  24. 1.8268 km W of Adak, Alaska · 2411 days ago · 16 km deep · 45 km away
  25. 2.5Rat Islands, Aleutian Islands, Alaska · 2410 days ago · 80 km deep · 62 km away
  26. 2.3Rat Islands, Aleutian Islands, Alaska · 2410 days ago · 4 km deep · 91 km away
  27. 3.7Rat Islands, Aleutian Islands, Alaska · 2409 days ago · 54 km deep · 40 km away
  28. 5.7239 km WSW of Adak, Alaska · 2407 days ago · 20 km deep · 62 km away · felt by 1 · tsunami flag
  29. 3.4242 km WSW of Adak, Alaska · 2407 days ago · 13 km deep · 70 km away
  30. 2.3239 km WSW of Adak, Alaska · 2407 days ago · 28 km deep · 48 km away
  31. 2.8244 km WSW of Adak, Alaska · 2407 days ago · 15 km deep · 63 km away
  32. 2.3263 km W of Adak, Alaska · 2407 days ago · 11 km deep · 11 km away
  33. 2.5244 km WSW of Adak, Alaska · 2407 days ago · 10 km deep · 66 km away
  34. 2.2237 km WSW of Adak, Alaska · 2407 days ago · 13 km deep · 54 km away
  35. 2.8240 km WSW of Adak, Alaska · 2407 days ago · 10 km deep · 74 km away
  36. 2.0237 km WSW of Adak, Alaska · 2407 days ago · 14 km deep · 56 km away
  37. 2.4237 km WSW of Adak, Alaska · 2407 days ago · 16 km deep · 54 km away
  38. 3.5239 km WSW of Adak, Alaska · 2406 days ago · 10 km deep · 74 km away
  39. 1.7Rat Islands, Aleutian Islands, Alaska · 2406 days ago · 2 km deep · 100 km away
  40. 2.6269 km W of Adak, Alaska · 2406 days ago · 165 km deep · 53 km away
  41. 5.0238 km WSW of Adak, Alaska · 2406 days ago · 10 km deep · 70 km away · felt by 2
  42. 2.0235 km WSW of Adak, Alaska · 2406 days ago · 26 km deep · 71 km away
  43. 1.5244 km WSW of Adak, Alaska · 2405 days ago · 16 km deep · 34 km away
  44. 2.6Rat Islands, Aleutian Islands, Alaska · 2405 days ago · 98 km deep · 70 km away
  45. 1.6Rat Islands, Aleutian Islands, Alaska · 2405 days ago · 25 km deep · 38 km away
  46. 3.0234 km WSW of Adak, Alaska · 2405 days ago · 18 km deep · 70 km away
  47. 4.1240 km WSW of Adak, Alaska · 2405 days ago · 10 km deep · 77 km away
  48. 3.5235 km WSW of Adak, Alaska · 2402 days ago · 57 km deep · 43 km away
  49. 1.9216 km WSW of Adak, Alaska · 2401 days ago · 25 km deep · 77 km away
  50. 2.9202 km WSW of Adak, Alaska · 2401 days ago · 10 km deep · 72 km away
  51. 2.7242 km WSW of Adak, Alaska · 2400 days ago · 35 km deep · 47 km away
  52. 1.9239 km WSW of Adak, Alaska · 2398 days ago · 5 km deep · 77 km away
  53. 3.2201 km W of Adak, Alaska · 2397 days ago · 248 km deep · 91 km away
  54. 2.0187 km WSW of Adak, Alaska · 2397 days ago · 24 km deep · 96 km away
  55. 1.9205 km WSW of Adak, Alaska · 2397 days ago · 17 km deep · 72 km away
  56. 2.1188 km WSW of Adak, Alaska · 2397 days ago · 24 km deep · 94 km away
  57. 4.3Rat Islands, Aleutian Islands, Alaska · 2397 days ago · 36 km deep · 56 km away
  58. 2.4235 km WSW of Adak, Alaska · 2396 days ago · 23 km deep · 48 km away
  59. 2.3255 km W of Adak, Alaska · 2395 days ago · 93 km deep · 31 km away
  60. 2.9223 km WSW of Adak, Alaska · 2394 days ago · 10 km deep · 84 km away

The first 60 of 105.

Before

  1. 3.0236 km W of Adak, Alaska · 2429 days ago · 179 km deep · 62 km away
  2. 2.2253 km W of Adak, Alaska · 2431 days ago · 67 km deep · 23 km away
  3. 2.9240 km WSW of Adak, Alaska · 2431 days ago · 17 km deep · 52 km away
  4. 3.2Andreanof Islands, Aleutian Islands, Alaska · 2432 days ago · 14 km deep · 58 km away
  5. 2.2214 km WSW of Adak, Alaska · 2433 days ago · 13 km deep · 97 km away
  6. 4.9Rat Islands, Aleutian Islands, Alaska · 2433 days ago · 118 km deep · 97 km away
  7. 2.9239 km WSW of Adak, Alaska · 2434 days ago · 17 km deep · 54 km away
  8. 4.2229 km W of Adak, Alaska · 2434 days ago · 97 km deep · 53 km away
  9. 3.1268 km WSW of Adak, Alaska · 2435 days ago · 10 km deep · 51 km away
  10. 4.1272 km WSW of Adak, Alaska · 2435 days ago · 30 km deep · 42 km away
  11. 3.0242 km WSW of Adak, Alaska · 2436 days ago · 17 km deep · 66 km away
  12. 2.6204 km WSW of Adak, Alaska · 2437 days ago · 76 km deep · 70 km away
  13. 2.5238 km WSW of Adak, Alaska · 2438 days ago · 10 km deep · 66 km away
  14. 2.4239 km WSW of Adak, Alaska · 2438 days ago · 11 km deep · 69 km away
  15. 2.0249 km WSW of Adak, Alaska · 2439 days ago · 26 km deep · 69 km away
  16. 4.4240 km WSW of Adak, Alaska · 2439 days ago · 22 km deep · 67 km away
  17. 2.4226 km W of Adak, Alaska · 2439 days ago · 13 km deep · 55 km away
  18. 1.8241 km WSW of Adak, Alaska · 2439 days ago · 13 km deep · 62 km away
  19. 1.8Andreanof Islands, Aleutian Islands, Alaska · 2439 days ago · 13 km deep · 51 km away
  20. 3.2Rat Islands, Aleutian Islands, Alaska · 2439 days ago · 17 km deep · 76 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70007uky (also filed as ak0201ufd24v). Read Sun, Oct 4, 2026, 8:43 AM UTC.