Alaska earthquakes

M3.4 earthquake 15 km WSW of Willow, Alaska

A magnitude 3.4 earthquake struck 15 km WSW of Willow, Alaska on Mon, Nov 8, 2021, 5:00 PM AKST (02:00 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M3.6 24 km SSW of Petersville, Alaska. This one was a foreshock.

Willow forecastMore in Alaska

Map

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

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The earthquake

Magnitude
3.4 (ml), minor
Local time
UTC
2021-11-09 02:00:43 UTC
Depth
18.4 km (11.4 mi), shallow
Epicenter
61.677° N, 150.288° W
Region
Alaska
Felt reports
19
Strongest shaking
III, weak shaking
Tsunami flag
No
Status
Reviewed by a seismologist

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated
III, weak shaking
Peak ground acceleration
0.5% of gravity
Peak ground velocity
-1.8 cm/s
Map
Automatic
USGS ShakeMap: estimated shaking intensity around the epicenter
Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

19 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting
Oblique reverse
Moment magnitude
3.5 Mwr
Nodal plane 1
Strike 142°, dip 48°, rake 38°
Nodal plane 2
Strike 25°, dip 62°, rake 132°

How well it is located

Reviewed by a seismologist.

Stations used
152

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 2.111 km WSW of Point MacKenzie, Alaska · 1762 days ago · 48 km deep · 38 km away
  2. 2.128 km NNE of Skwentna, Alaska · 1761 days ago · 83 km deep · 73 km away
  3. 1.650 km NW of Beluga, Alaska · 1761 days ago · 92 km deep · 73 km away
  4. 1.820 km ESE of Skwentna, Alaska · 1761 days ago · 68 km deep · 47 km away
  5. 1.531 km ESE of Skwentna, Alaska · 1761 days ago · 66 km deep · 36 km away
  6. 1.6Southern Alaska · 1761 days ago · 38 km deep · 31 km away
  7. 1.627 km WSW of Hope, Alaska · 1761 days ago · 41 km deep · 95 km away
  8. 2.912 km NNE of Skwentna, Alaska · 1760 days ago · 74 km deep · 69 km away
  9. 1.511 km NNE of Skwentna, Alaska · 1760 days ago · 76 km deep · 71 km away
  10. 1.59 km NE of Susitna, Alaska · 1760 days ago · 44 km deep · 10 km away
  11. 1.88 km SSW of Willow, Alaska · 1760 days ago · 4 km deep · 9 km away
  12. 1.78 km S of Willow, Alaska · 1760 days ago · 43 km deep · 12 km away
  13. 1.65 km ENE of Point MacKenzie, Alaska · 1760 days ago · 18 km deep · 38 km away
  14. 1.727 km NE of Skwentna, Alaska · 1760 days ago · 69 km deep · 70 km away
  15. 2.027 km NW of Willow, Alaska · 1760 days ago · 46 km deep · 29 km away
  16. 1.620 km SW of Petersville, Alaska · 1759 days ago · 71 km deep · 84 km away
  17. 1.627 km SE of Skwentna, Alaska · 1759 days ago · 73 km deep · 44 km away
  18. 1.522 km SW of Petersville, Alaska · 1759 days ago · 67 km deep · 82 km away
  19. 1.59 km W of Petersville, Alaska · 1759 days ago · 76 km deep · 99 km away
  20. 1.79 km NNW of Point Possession, Alaska · 1758 days ago · 14 km deep · 78 km away
  21. 1.840 km SSW of Skwentna, Alaska · 1758 days ago · 97 km deep · 80 km away
  22. 1.741 km NNW of Beluga, Alaska · 1758 days ago · 12 km deep · 60 km away
  23. 1.5Southern Alaska · 1758 days ago · 91 km deep · 96 km away
  24. 1.713 km NNE of Willow, Alaska · 1758 days ago · 19 km deep · 28 km away
  25. 1.913 km SE of Susitna North, Alaska · 1758 days ago · 55 km deep · 57 km away
  26. 1.55 km W of Point MacKenzie, Alaska · 1757 days ago · 43 km deep · 38 km away
  27. 1.65 km E of Susitna, Alaska · 1757 days ago · 69 km deep · 15 km away
  28. 1.641 km NW of Beluga, Alaska · 1757 days ago · 85 km deep · 78 km away
  29. 1.627 km WSW of Petersville, Alaska · 1757 days ago · 87 km deep · 94 km away
  30. 2.04 km NE of Knik, Alaska · 1757 days ago · 33 km deep · 40 km away
  31. 1.549 km NW of Beluga, Alaska · 1757 days ago · 84 km deep · 79 km away
  32. 1.923 km SSW of Skwentna, Alaska · 1757 days ago · 94 km deep · 69 km away
  33. 1.517 km SSE of Tyonek, Alaska · 1757 days ago · 20 km deep · 92 km away
  34. 1.817 km SW of Hope, Alaska · 1756 days ago · 7 km deep · 98 km away
  35. 1.724 km ENE of Skwentna, Alaska · 1756 days ago · 66 km deep · 60 km away
  36. 1.537 km W of Susitna, Alaska · 1756 days ago · 73 km deep · 52 km away
  37. 2.925 km WNW of Willow, Alaska · 1756 days ago · 62 km deep · 20 km away
  38. 1.533 km ENE of Susitna North, Alaska · 1756 days ago · 43 km deep · 85 km away
  39. 1.5Southern Alaska · 1756 days ago · 38 km deep · 32 km away
  40. 1.521 km NW of Susitna, Alaska · 1756 days ago · 53 km deep · 27 km away
  41. 1.536 km ESE of Skwentna, Alaska · 1756 days ago · 64 km deep · 32 km away
  42. 1.51 km WNW of Big Lake, Alaska · 1756 days ago · 28 km deep · 23 km away
  43. 1.532 km N of Sutton-Alpine, Alaska · 1756 days ago · 38 km deep · 86 km away
  44. 1.822 km NNW of Susitna, Alaska · 1755 days ago · 47 km deep · 20 km away
  45. 1.58 km NNW of Susitna, Alaska · 1755 days ago · 61 km deep · 18 km away
  46. 1.515 km ENE of Beluga, Alaska · 1754 days ago · 61 km deep · 61 km away
  47. 1.512 km NNE of Susitna, Alaska · 1753 days ago · 46 km deep · 8 km away
  48. 2.127 km NW of Susitna, Alaska · 1753 days ago · 59 km deep · 29 km away
  49. 1.812 km SSE of Point Possession, Alaska · 1753 days ago · 46 km deep · 97 km away
  50. 2.032 km ENE of Skwentna, Alaska · 1753 days ago · 67 km deep · 59 km away
  51. 1.524 km ENE of Skwentna, Alaska · 1753 days ago · 64 km deep · 58 km away
  52. 2.712 km NNW of Beluga, Alaska · 1753 days ago · 64 km deep · 68 km away
  53. 2.73 km SSE of Houston, Alaska · 1753 days ago · 37 km deep · 27 km away · felt by 2
  54. 1.812 km ENE of Willow, Alaska · 1753 days ago · 23 km deep · 28 km away
  55. 1.67 km NNW of Trapper Creek, Alaska · 1752 days ago · 63 km deep · 78 km away
  56. 1.847 km SW of Skwentna, Alaska · 1752 days ago · 113 km deep · 96 km away
  57. 1.8Southern Alaska · 1752 days ago · 30 km deep · 47 km away
  58. 1.913 km WNW of Susitna North, Alaska · 1752 days ago · 4 km deep · 59 km away
  59. 1.821 km SSW of Petersville, Alaska · 1752 days ago · 69 km deep · 78 km away
  60. 1.835 km N of Fishhook, Alaska · 1751 days ago · 35 km deep · 73 km away

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021edoel2m (also filed as us7000fsiy). Read Thu, Sep 24, 2026, 8:29 AM UTC.