California earthquakes

M2.8 earthquake 18 km NNE of Nice, California

A magnitude 2.8 earthquake struck 18 km NNE of Nice, California on Wed, Mar 31, 1976, 4:30 PM PST (00:30 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M3.1 7 km WSW of Cobb, California. 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
2.8 (md), micro
Local time
UTC
1976-04-01 00:30:27 UTC
Depth
6.7 km (4.2 mi), shallow
Epicenter
39.263° N, 122.735° 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 1.5 km horizontally, 1.2 km in depth
Depth from
From location
Station coverage gap
273°, poorly surrounded by stations
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 70 in the 60 days after this one and 35 in the 30 days before it.

After

  1. 1.98 km WSW of Cobb, California · 18443 days ago · 0 km deep · 52 km away
  2. 1.96 km W of Cobb, California · 18439 days ago · 3 km deep · 50 km away
  3. 2.34 km W of Cobb, California · 18439 days ago · 4 km deep · 50 km away
  4. 2.49 km NNW of Redwood Valley, California · 18437 days ago · 2 km deep · 44 km away
  5. 1.55 km WSW of Cobb, California · 18435 days ago · 4 km deep · 50 km away
  6. 2.49 km NE of Santa Rosa, California · 18434 days ago · 4 km deep · 86 km away
  7. 1.87 km E of Talmage, California · 18431 days ago · 5 km deep · 32 km away
  8. 1.93 km E of Talmage, California · 18431 days ago · 5 km deep · 37 km away
  9. 1.87 km W of Cobb, California · 18429 days ago · 4 km deep · 50 km away
  10. 3.17 km NE of Hopland, California · 18429 days ago · 2 km deep · 39 km away
  11. 3.17 km WSW of Cobb, California · 18429 days ago · 1 km deep · 52 km away
  12. 1.76 km W of Cobb, California · 18427 days ago · 4 km deep · 50 km away
  13. 2.36 km W of Cobb, California · 18427 days ago · 4 km deep · 50 km away
  14. 1.88 km W of Cobb, California · 18427 days ago · 1 km deep · 51 km away
  15. 2.15 km ESE of Healdsburg, California · 18426 days ago · 6 km deep · 74 km away
  16. 2.522 km WSW of Williams, California · 18425 days ago · 3 km deep · 35 km away
  17. 1.96 km W of Cobb, California · 18424 days ago · 3 km deep · 50 km away
  18. 2.27 km NNE of Hopland, California · 18423 days ago · 3 km deep · 39 km away
  19. 2.1Northern California · 18422 days ago · 4 km deep · 50 km away
  20. 2.87 km NE of Hopland, California · 18421 days ago · 3 km deep · 39 km away
  21. 1.95 km SW of Cobb, California · 18421 days ago · 5 km deep · 54 km away
  22. 1.7Northern California · 18420 days ago · 2 km deep · 52 km away
  23. 1.96 km W of Cobb, California · 18419 days ago · 4 km deep · 50 km away
  24. 2.411 km ESE of Hidden Valley Lake, California · 18419 days ago · 7 km deep · 61 km away
  25. 2.17 km NNE of Hopland, California · 18418 days ago · 1 km deep · 39 km away
  26. 1.77 km W of Cobb, California · 18417 days ago · 3 km deep · 50 km away
  27. 2.0near the coast of Northern California · 18416 days ago · -1 km deep · 40 km away
  28. 1.96 km SW of Lower Lake, California · 18413 days ago · 2 km deep · 44 km away
  29. 2.66 km W of Cobb, California · 18413 days ago · 4 km deep · 50 km away
  30. 2.28 km WSW of Cobb, California · 18413 days ago · 4 km deep · 52 km away
  31. 2.16 km E of Santa Rosa, California · 18411 days ago · 9 km deep · 93 km away
  32. 1.96 km WSW of Cobb, California · 18411 days ago · 4 km deep · 51 km away
  33. 2.17 km WNW of Upper Lake, California · 18409 days ago · 15 km deep · 24 km away
  34. 1.96 km W of Cobb, California · 18409 days ago · 3 km deep · 50 km away
  35. 3.04 km ENE of Brooktrails, California · 18408 days ago · -1 km deep · 56 km away
  36. 1.78 km N of Cloverdale, California · 18406 days ago · 3 km deep · 48 km away
  37. 1.96 km W of Cobb, California · 18405 days ago · 3 km deep · 50 km away
  38. 1.95 km NNE of Clearlake, California · 18404 days ago · 3 km deep · 31 km away
  39. 3.17 km W of Cobb, California · 18402 days ago · 4 km deep · 50 km away
  40. 1.96 km W of Cobb, California · 18402 days ago · 3 km deep · 50 km away
  41. 1.97 km W of Cobb, California · 18402 days ago · 4 km deep · 50 km away
  42. 1.87 km W of Cobb, California · 18401 days ago · 3 km deep · 50 km away
  43. 1.58 km WSW of Cobb, California · 18401 days ago · 0 km deep · 52 km away
  44. 1.917 km NNE of Angwin, California · 18397 days ago · 8 km deep · 67 km away
  45. 1.916 km NNE of Angwin, California · 18397 days ago · 7 km deep · 68 km away
  46. 1.917 km ESE of Hidden Valley Lake, California · 18397 days ago · 11 km deep · 67 km away
  47. 1.817 km NNE of Angwin, California · 18397 days ago · 9 km deep · 67 km away
  48. 2.38 km WSW of Cobb, California · 18397 days ago · 4 km deep · 52 km away
  49. 1.86 km WSW of Cobb, California · 18397 days ago · -1 km deep · 51 km away
  50. 2.26 km WSW of Cobb, California · 18397 days ago · 0 km deep · 51 km away
  51. 1.56 km WSW of Cobb, California · 18397 days ago · 0 km deep · 51 km away
  52. 1.88 km W of Cobb, California · 18396 days ago · 0 km deep · 51 km away
  53. 2.710 km W of Cobb, California · 18396 days ago · 2 km deep · 48 km away
  54. 2.16 km W of Cobb, California · 18396 days ago · 3 km deep · 50 km away
  55. 2.76 km W of Cobb, California · 18396 days ago · 3 km deep · 50 km away
  56. 1.77 km WSW of Cobb, California · 18395 days ago · 2 km deep · 51 km away
  57. 2.510 km W of Philo, California · 18395 days ago · 2 km deep · 74 km away
  58. 1.64 km WSW of Cobb, California · 18393 days ago · 4 km deep · 50 km away
  59. 1.83 km NNE of Larkfield-Wikiup, California · 18393 days ago · 7 km deep · 80 km away
  60. 1.67 km WSW of Cobb, California · 18392 days ago · 2 km deep · 52 km away

The first 60 of 70.

Before

  1. 2.03 km NNW of Larkfield-Wikiup, California · 18444 days ago · 7 km deep · 80 km away
  2. 2.16 km WSW of Cobb, California · 18445 days ago · 0 km deep · 51 km away
  3. 2.18 km N of Upper Lake, California · 18445 days ago · 1 km deep · 14 km away
  4. 1.912 km N of Cloverdale, CA · 18446 days ago · 3 km deep · 46 km away
  5. 1.6Northern California · 18447 days ago · 0 km deep · 49 km away
  6. 1.77 km W of Cobb, California · 18447 days ago · 0 km deep · 50 km away
  7. 2.117 km W of Stonyford, California · 18452 days ago · 4 km deep · 13 km away
  8. 2.2Northern California · 18456 days ago · 4 km deep · 51 km away
  9. 2.118 km SW of Stonyford, California · 18456 days ago · 8 km deep · 2 km away
  10. 2.27 km SW of Hopland, California · 18457 days ago · 3 km deep · 54 km away
  11. 1.67 km E of Hopland, California · 18457 days ago · 7 km deep · 40 km away
  12. 2.78 km WSW of Cobb, California · 18457 days ago · 1 km deep · 51 km away
  13. 1.78 km WSW of Cobb, California · 18457 days ago · 1 km deep · 51 km away
  14. 1.98 km W of Cobb, California · 18457 days ago · 0 km deep · 51 km away
  15. 1.67 km W of Cobb, California · 18457 days ago · 4 km deep · 50 km away
  16. 1.88 km WSW of Cobb, California · 18458 days ago · 4 km deep · 52 km away
  17. 1.69 km W of Cobb, California · 18458 days ago · 0 km deep · 51 km away
  18. 1.92 km SE of Clear Lake Riviera, California · 18460 days ago · 1 km deep · 37 km away
  19. 1.66 km S of Clear Lake Riviera, California · 18460 days ago · 2 km deep · 41 km away
  20. 1.86 km S of Clear Lake Riviera, California · 18460 days ago · 4 km deep · 41 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1029299. Read Tue, Sep 29, 2026, 3:39 PM UTC.