California earthquakes

M1.9 earthquake 7 km S of Willows, California

A magnitude 1.9 earthquake struck 7 km S of Willows, California on Wed, Jan 11, 1984, 10:36 PM PST (06:36 UTC), 24 km (15 mi) below the surface.

A larger quake followed: M3.1 8 km W of Cobb, California. This one was a foreshock.

Willows forecastMore in California

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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
1.9 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1984-01-12 06:36:31 UTC
Depth
23.7 km (14.7 mi), shallow
Epicenter
39.459° N, 122.200° W
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.

Location uncertainty
About 1.6 km horizontally, 1.5 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
112°
Stations used
14

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 183 in the 60 days after this one and 76 in the 30 days before it.

After

  1. 1.76 km W of Cobb, California · 15603 days ago · 3 km deep · 88 km away
  2. 2.36 km WSW of Cobb, California · 15603 days ago · 0 km deep · 89 km away
  3. 1.86 km WSW of Cobb, California · 15603 days ago · 3 km deep · 89 km away
  4. 1.96 km W of Cobb, California · 15603 days ago · 4 km deep · 88 km away
  5. 1.97 km WSW of Cobb, California · 15602 days ago · 1 km deep · 90 km away
  6. 2.57 km WSW of Cobb, California · 15602 days ago · 1 km deep · 90 km away
  7. 2.15 km SW of Cobb, California · 15602 days ago · 0 km deep · 89 km away
  8. 1.59 km WSW of Cobb, California · 15602 days ago · 1 km deep · 91 km away
  9. 1.97 km WSW of Cobb, California · 15601 days ago · 2 km deep · 89 km away
  10. 2.26 km W of Cobb, California · 15601 days ago · 0 km deep · 88 km away
  11. 1.6Northern California · 15601 days ago · 1 km deep · 88 km away
  12. 1.55 km WSW of Cobb, California · 15601 days ago · 0 km deep · 89 km away
  13. 1.77 km WSW of Cobb, California · 15600 days ago · 1 km deep · 90 km away
  14. 2.69 km WSW of Cobb, California · 15600 days ago · 2 km deep · 91 km away
  15. 1.75 km WSW of Cobb, California · 15600 days ago · 3 km deep · 89 km away
  16. 2.69 km WSW of Cobb, California · 15600 days ago · 2 km deep · 91 km away
  17. 2.41 km ESE of Flournoy, California · 15600 days ago · 26 km deep · 54 km away
  18. 1.621 km NE of Potter Valley, California · 15600 days ago · 5 km deep · 62 km away
  19. 1.57 km WSW of Cobb, California · 15598 days ago · 3 km deep · 90 km away
  20. 1.57 km WSW of Cobb, California · 15598 days ago · 3 km deep · 90 km away
  21. 1.68 km ENE of Hidden Valley Lake, California · 15597 days ago · 7 km deep · 74 km away
  22. 1.76 km W of Cobb, California · 15597 days ago · 3 km deep · 88 km away
  23. 2.46 km W of Cobb, California · 15597 days ago · 3 km deep · 88 km away
  24. 2.66 km W of Cobb, California · 15596 days ago · 2 km deep · 89 km away
  25. 1.77 km W of Cobb, California · 15596 days ago · 3 km deep · 89 km away
  26. 1.77 km S of Clipper Mills, California · 15596 days ago · 19 km deep · 91 km away
  27. 1.714 km S of Lodoga, California · 15596 days ago · 15 km deep · 41 km away
  28. 1.64 km SSW of Cobb, California · 15596 days ago · -1 km deep · 88 km away
  29. 2.36 km W of Cobb, California · 15596 days ago · 1 km deep · 87 km away
  30. 1.914 km NE of Upper Lake, California · 15595 days ago · 7 km deep · 57 km away
  31. 1.97 km WSW of Cobb, California · 15595 days ago · 2 km deep · 90 km away
  32. 2.07 km W of Cobb, California · 15595 days ago · 3 km deep · 89 km away
  33. 1.622 km NE of Potter Valley, California · 15595 days ago · 7 km deep · 64 km away
  34. 1.68 km WSW of Cobb, California · 15594 days ago · 3 km deep · 91 km away
  35. 2.14 km NW of Kelseyville, California · 15594 days ago · 4 km deep · 77 km away
  36. 1.65 km WSW of Cobb, California · 15594 days ago · 1 km deep · 88 km away
  37. 2.26 km W of Cobb, California · 15593 days ago · 3 km deep · 88 km away
  38. 1.68 km WSW of Cobb, California · 15593 days ago · 3 km deep · 90 km away
  39. 2.46 km W of Cobb, California · 15593 days ago · 3 km deep · 88 km away
  40. 1.76 km W of Cobb, California · 15593 days ago · 3 km deep · 88 km away
  41. 1.9near the coast of Northern California · 15591 days ago · 8 km deep · 91 km away
  42. 2.415 km W of Guinda, California · 15591 days ago · 8 km deep · 71 km away
  43. 2.0Northern California · 15591 days ago · 3 km deep · 87 km away
  44. 1.78 km WNW of Cobb, California · 15591 days ago · 0 km deep · 85 km away
  45. 1.77 km WSW of Cobb, California · 15590 days ago · 2 km deep · 90 km away
  46. 1.76 km WSW of Cobb, California · 15590 days ago · 3 km deep · 89 km away
  47. 1.66 km WSW of Cobb, California · 15590 days ago · 1 km deep · 89 km away
  48. 1.87 km W of Cobb, California · 15590 days ago · 3 km deep · 89 km away
  49. 1.58 km WSW of Cobb, California · 15590 days ago · 3 km deep · 90 km away
  50. 1.76 km W of Cobb, California · 15590 days ago · 3 km deep · 88 km away
  51. 1.86 km SW of Hamilton City, California · 15589 days ago · 18 km deep · 29 km away
  52. 1.97 km W of Cobb, California · 15588 days ago · 3 km deep · 88 km away
  53. 1.97 km WSW of Cobb, California · 15588 days ago · 3 km deep · 91 km away
  54. 2.612 km WNW of Guinda, California · 15588 days ago · 15 km deep · 69 km away
  55. 2.06 km WSW of Cobb, California · 15588 days ago · 0 km deep · 89 km away
  56. 2.25 km WSW of Cobb, California · 15588 days ago · 1 km deep · 88 km away
  57. 1.75 km WSW of Cobb, California · 15588 days ago · 1 km deep · 88 km away
  58. 2.66 km WSW of Cobb, California · 15588 days ago · 0 km deep · 89 km away
  59. 1.83 km N of Tobin, California · 15587 days ago · 3 km deep · 95 km away
  60. 1.6Northern California · 15586 days ago · 1 km deep · 89 km away

The first 60 of 183.

Before

  1. 1.818 km NNE of Upper Lake, California · 15604 days ago · 7 km deep · 56 km away
  2. 1.67 km WSW of Cobb, California · 15604 days ago · 1 km deep · 90 km away
  3. 2.16 km W of Cobb, California · 15604 days ago · 1 km deep · 88 km away
  4. 1.715 km NE of Angwin, California · 15605 days ago · 20 km deep · 87 km away
  5. 2.6Northern California · 15606 days ago · -1 km deep · 90 km away
  6. 1.77 km W of Cobb, California · 15606 days ago · 3 km deep · 88 km away
  7. 1.78 km W of Cobb, California · 15606 days ago · 8 km deep · 89 km away
  8. 2.26 km W of Cobb, California · 15607 days ago · 3 km deep · 88 km away
  9. 1.77 km WSW of Cobb, California · 15607 days ago · 1 km deep · 90 km away
  10. 2.017 km ENE of Potter Valley, California · 15607 days ago · 7 km deep · 63 km away
  11. 2.014 km NNW of Moskowite Corner, California · 15608 days ago · 2 km deep · 100 km away
  12. 1.86 km W of Cobb, California · 15609 days ago · 3 km deep · 88 km away
  13. 1.77 km WSW of Cobb, California · 15610 days ago · 0 km deep · 90 km away
  14. 2.17 km W of Cobb, California · 15610 days ago · 3 km deep · 89 km away
  15. 1.77 km W of Cobb, California · 15610 days ago · 3 km deep · 89 km away
  16. 3.07 km W of Cobb, California · 15610 days ago · 3 km deep · 88 km away
  17. 2.66 km SW of Cobb, CA · 15610 days ago · 1 km deep · 90 km away
  18. 1.67 km W of Cobb, California · 15611 days ago · 3 km deep · 88 km away
  19. 1.67 km WSW of Cobb, California · 15611 days ago · 2 km deep · 90 km away
  20. 1.56 km W of Cobb, California · 15612 days ago · 3 km deep · 89 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1109825. Read Thu, Oct 1, 2026, 11:45 PM UTC.