California earthquakes

M2.5 earthquake 22 km WSW of Williams, California

A magnitude 2.5 earthquake struck 22 km WSW of Williams, California on Mon, Apr 19, 1976, 2:40 PM PST (22:40 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.8 3 km SSE of South Oroville, California. This one was a foreshock.

Williams forecastMore in California

Map

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

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The earthquake

Magnitude
2.5 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1976-04-19 22:40:47 UTC
Depth
3.4 km (2.1 mi), shallow
Epicenter
39.086° N, 122.400° 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 0.6 km horizontally, 2.2 km in depth
Magnitude uncertainty
±0.20
Depth from
From location
Station coverage gap
240°, poorly surrounded by stations
Stations used
16

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 105 in the 60 days after this one and 40 in the 30 days before it.

After

  1. 1.96 km W of Cobb, California · 18429 days ago · 3 km deep · 45 km away
  2. 2.27 km NNE of Hopland, California · 18428 days ago · 3 km deep · 58 km away
  3. 2.46 km WSW of Glen Ellen, California · 18428 days ago · 8 km deep · 84 km away
  4. 2.1Northern California · 18427 days ago · 4 km deep · 46 km away
  5. 2.87 km NE of Hopland, California · 18427 days ago · 3 km deep · 58 km away
  6. 1.95 km SW of Cobb, California · 18426 days ago · 5 km deep · 46 km away
  7. 1.7Northern California · 18425 days ago · 2 km deep · 47 km away
  8. 1.96 km W of Cobb, California · 18425 days ago · 4 km deep · 46 km away
  9. 2.411 km ESE of Hidden Valley Lake, California · 18424 days ago · 7 km deep · 36 km away
  10. 2.17 km NNE of Hopland, California · 18423 days ago · 1 km deep · 59 km away
  11. 1.77 km W of Cobb, California · 18422 days ago · 3 km deep · 47 km away
  12. 2.0near the coast of Northern California · 18421 days ago · -1 km deep · 59 km away
  13. 2.44 km ESE of Palermo, California · 18419 days ago · 3 km deep · 87 km away
  14. 1.96 km SW of Lower Lake, California · 18419 days ago · 2 km deep · 33 km away
  15. 2.66 km W of Cobb, California · 18418 days ago · 4 km deep · 45 km away
  16. 2.28 km WSW of Cobb, California · 18418 days ago · 4 km deep · 48 km away
  17. 2.16 km E of Santa Rosa, California · 18416 days ago · 9 km deep · 76 km away
  18. 1.96 km WSW of Cobb, California · 18416 days ago · 4 km deep · 46 km away
  19. 2.17 km WNW of Upper Lake, California · 18415 days ago · 15 km deep · 52 km away
  20. 1.96 km W of Cobb, California · 18414 days ago · 3 km deep · 46 km away
  21. 1.54 km ESE of Palermo, California · 18413 days ago · 6 km deep · 86 km away
  22. 3.04 km ENE of Brooktrails, California · 18413 days ago · -1 km deep · 91 km away
  23. 3.04 km S of Oroville East, California · 18413 days ago · 3 km deep · 90 km away
  24. 2.33 km SE of Palermo, California · 18412 days ago · 4 km deep · 85 km away
  25. 1.78 km N of Cloverdale, California · 18411 days ago · 3 km deep · 57 km away
  26. 1.96 km W of Cobb, California · 18410 days ago · 3 km deep · 46 km away
  27. 1.95 km NNE of Clearlake, California · 18409 days ago · 3 km deep · 20 km away
  28. 1.95 km SE of Palermo, California · 18408 days ago · 4 km deep · 86 km away
  29. 2.33 km SE of Palermo, California · 18408 days ago · 4 km deep · 85 km away
  30. 2.33 km ESE of Palermo, California · 18407 days ago · 4 km deep · 86 km away
  31. 3.17 km W of Cobb, California · 18407 days ago · 4 km deep · 46 km away
  32. 1.96 km SE of Palermo, California · 18407 days ago · 2 km deep · 86 km away
  33. 1.96 km W of Cobb, California · 18407 days ago · 3 km deep · 46 km away
  34. 1.97 km W of Cobb, California · 18407 days ago · 4 km deep · 46 km away
  35. 1.87 km W of Cobb, California · 18406 days ago · 3 km deep · 46 km away
  36. 1.58 km WSW of Cobb, California · 18406 days ago · 0 km deep · 48 km away
  37. 2.74 km ESE of Palermo, California · 18404 days ago · 5 km deep · 86 km away
  38. 1.917 km NNE of Angwin, California · 18402 days ago · 8 km deep · 40 km away
  39. 1.916 km NNE of Angwin, California · 18402 days ago · 7 km deep · 41 km away
  40. 1.917 km ESE of Hidden Valley Lake, California · 18402 days ago · 11 km deep · 40 km away
  41. 1.817 km NNE of Angwin, California · 18402 days ago · 9 km deep · 40 km away
  42. 2.38 km WSW of Cobb, California · 18402 days ago · 4 km deep · 48 km away
  43. 1.86 km WSW of Cobb, California · 18402 days ago · -1 km deep · 47 km away
  44. 2.26 km WSW of Cobb, California · 18402 days ago · 0 km deep · 46 km away
  45. 1.56 km WSW of Cobb, California · 18402 days ago · 0 km deep · 46 km away
  46. 1.88 km W of Cobb, California · 18402 days ago · 0 km deep · 47 km away
  47. 3.34 km S of Oroville East, California · 18401 days ago · 0 km deep · 90 km away
  48. 2.710 km W of Cobb, California · 18401 days ago · 2 km deep · 47 km away
  49. 2.16 km W of Cobb, California · 18401 days ago · 3 km deep · 46 km away
  50. 1.91 km NNW of Oroville East, California · 18401 days ago · 3 km deep · 93 km away
  51. 2.76 km W of Cobb, California · 18401 days ago · 3 km deep · 46 km away
  52. 1.77 km WSW of Cobb, California · 18400 days ago · 2 km deep · 47 km away
  53. 2.63 km SW of Oroville East, California · 18400 days ago · 5 km deep · 90 km away
  54. 1.64 km WSW of Cobb, California · 18399 days ago · 4 km deep · 45 km away
  55. 1.83 km NNE of Larkfield-Wikiup, California · 18399 days ago · 7 km deep · 68 km away
  56. 1.53 km SE of Palermo, California · 18398 days ago · 4 km deep · 85 km away
  57. 1.67 km WSW of Cobb, California · 18398 days ago · 2 km deep · 47 km away
  58. 2.1Northern California · 18397 days ago · 7 km deep · 86 km away
  59. 3.15 km WNW of Bangor, California · 18395 days ago · 3 km deep · 88 km away
  60. 1.95 km SSE of Palermo, California · 18395 days ago · 3 km deep · 83 km away

The first 60 of 105.

Before

  1. 2.15 km ESE of Healdsburg, California · 18431 days ago · 6 km deep · 65 km away
  2. 1.88 km W of Cobb, California · 18432 days ago · 1 km deep · 47 km away
  3. 2.36 km W of Cobb, California · 18432 days ago · 4 km deep · 45 km away
  4. 1.76 km W of Cobb, California · 18432 days ago · 4 km deep · 45 km away
  5. 2.21 km WSW of Oroville East, California · 18433 days ago · 5 km deep · 91 km away
  6. 2.41 km WSW of Oroville East, California · 18433 days ago · 4 km deep · 91 km away
  7. 3.4Northern California · 18433 days ago · 5 km deep · 91 km away
  8. 3.17 km WSW of Cobb, California · 18434 days ago · 1 km deep · 47 km away
  9. 3.17 km NE of Hopland, California · 18435 days ago · 2 km deep · 58 km away
  10. 1.87 km W of Cobb, California · 18435 days ago · 4 km deep · 46 km away
  11. 1.93 km E of Talmage, California · 18436 days ago · 5 km deep · 63 km away
  12. 1.87 km E of Talmage, California · 18436 days ago · 5 km deep · 59 km away
  13. 1.93 km SE of Palermo, California · 18437 days ago · 8 km deep · 84 km away
  14. 2.56 km ESE of Palermo, California · 18438 days ago · 4 km deep · 88 km away
  15. 1.61 km WSW of Oroville East, California · 18438 days ago · 5 km deep · 91 km away
  16. 2.49 km NE of Santa Rosa, California · 18439 days ago · 4 km deep · 69 km away
  17. 1.55 km WSW of Cobb, California · 18440 days ago · 4 km deep · 45 km away
  18. 1.95 km WNW of El Verano, California · 18441 days ago · 0 km deep · 88 km away
  19. 2.49 km NNW of Redwood Valley, California · 18442 days ago · 2 km deep · 77 km away
  20. 1.93 km ENE of Palermo, California · 18443 days ago · 5 km deep · 87 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1029470. Read Sun, Oct 4, 2026, 8:37 PM UTC.