California earthquakes

M2.1 earthquake 10 km ENE of Lucerne, California

A magnitude 2.1 earthquake struck 10 km ENE of Lucerne, California on Wed, Aug 19, 1987, 3:19 AM PDT (10:19 UTC), 24 km (15 mi) below the surface.

A larger quake followed: M3.4 4 km W of Cobb, California. This one was a foreshock.

Lucerne 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
2.1 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1987-08-19 10:19:47 UTC
Depth
24.4 km (15.1 mi), shallow
Epicenter
39.138° N, 122.692° 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 7.7 km horizontally, 4.4 km in depth
Magnitude uncertainty
±0.18
Depth from
From location
Station coverage gap
288°, poorly surrounded by stations
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 160 in the 60 days after this one and 111 in the 30 days before it.

After

  1. 2.67 km W of Cobb, California · 14289 days ago · 3 km deep · 38 km away
  2. 2.16 km W of Cobb, California · 14289 days ago · 3 km deep · 36 km away
  3. 1.63 km NNW of Cloverdale, California · 14288 days ago · 2 km deep · 45 km away
  4. 1.96 km W of Cobb, California · 14288 days ago · -1 km deep · 36 km away
  5. 1.86 km W of Cobb, California · 14288 days ago · 0 km deep · 36 km away
  6. 1.96 km W of Cobb, California · 14288 days ago · 0 km deep · 36 km away
  7. 1.66 km W of Cobb, California · 14287 days ago · 1 km deep · 36 km away
  8. 1.75 km W of Cobb, California · 14287 days ago · 0 km deep · 35 km away
  9. 1.86 km W of Cobb, California · 14286 days ago · 3 km deep · 36 km away
  10. 2.16 km W of Cobb, California · 14286 days ago · 3 km deep · 36 km away
  11. 1.65 km WNW of Cobb, California · 14286 days ago · 1 km deep · 35 km away
  12. 2.9Northern California · 14286 days ago · 2 km deep · 43 km away
  13. 2.27 km WSW of Cobb, California · 14286 days ago · 0 km deep · 38 km away
  14. 1.87 km W of Cobb, California · 14285 days ago · 3 km deep · 37 km away
  15. 2.06 km WSW of Cobb, California · 14285 days ago · 1 km deep · 38 km away
  16. 2.14 km W of Cobb, California · 14285 days ago · 1 km deep · 36 km away
  17. 2.06 km WSW of Cobb, California · 14285 days ago · 1 km deep · 38 km away
  18. 1.711 km WNW of Redwood Valley, California · 14285 days ago · 6 km deep · 58 km away
  19. 2.17 km WSW of Cobb, California · 14285 days ago · 1 km deep · 38 km away
  20. 2.67 km W of Cobb, California · 14284 days ago · 0 km deep · 35 km away
  21. 1.88 km NW of Redwood Valley, California · 14284 days ago · 2 km deep · 54 km away
  22. 1.611 km N of Brooktrails, California · 14284 days ago · 6 km deep · 75 km away
  23. 1.64 km S of Cobb, California · 14284 days ago · -1 km deep · 40 km away
  24. 2.45 km SW of Cobb, California · 14283 days ago · 0 km deep · 40 km away
  25. 1.82 km WNW of Brooktrails, California · 14283 days ago · 2 km deep · 71 km away
  26. 1.86 km NE of Brooktrails, California · 14283 days ago · 5 km deep · 67 km away
  27. 1.79 km W of Cobb, California · 14282 days ago · -1 km deep · 38 km away
  28. 2.16 km E of Hidden Valley Lake, California · 14281 days ago · 14 km deep · 41 km away
  29. 2.18 km W of Cobb, California · 14281 days ago · 0 km deep · 36 km away
  30. 1.88 km W of Cobb, California · 14281 days ago · 0 km deep · 37 km away
  31. 2.38 km WSW of Cobb, California · 14281 days ago · 2 km deep · 39 km away
  32. 2.56 km W of Cobb, California · 14280 days ago · 1 km deep · 37 km away
  33. 2.26 km W of Cobb, California · 14280 days ago · 3 km deep · 37 km away
  34. 1.7Northern California · 14279 days ago · 0 km deep · 37 km away
  35. 2.37 km WSW of Cobb, California · 14279 days ago · 1 km deep · 38 km away
  36. 2.028 km NNE of Potter Valley, California · 14278 days ago · 13 km deep · 53 km away
  37. 2.05 km WNW of Cobb, California · 14278 days ago · 2 km deep · 35 km away
  38. 1.65 km SSW of Cobb, California · 14278 days ago · 0 km deep · 40 km away
  39. 2.14 km W of Cobb, California · 14278 days ago · 0 km deep · 37 km away
  40. 1.97 km W of Cobb, California · 14278 days ago · 3 km deep · 37 km away
  41. 2.05 km SSE of Kelseyville, California · 14276 days ago · 0 km deep · 26 km away
  42. 3.08 km W of Cobb, California · 14276 days ago · 1 km deep · 38 km away
  43. 2.06 km NNE of Penngrove, California · 14276 days ago · 4 km deep · 88 km away
  44. 1.76 km W of Cobb, California · 14276 days ago · 1 km deep · 35 km away
  45. 1.76 km W of Cobb, California · 14275 days ago · 3 km deep · 37 km away
  46. 1.87 km WSW of Cobb, California · 14275 days ago · 4 km deep · 39 km away
  47. 1.65 km SW of Cobb, California · 14275 days ago · -1 km deep · 39 km away
  48. 1.83 km NNW of Cloverdale, California · 14275 days ago · -1 km deep · 44 km away
  49. 1.67 km W of Cobb, California · 14275 days ago · 0 km deep · 37 km away
  50. 1.57 km WSW of Cobb, California · 14275 days ago · 1 km deep · 39 km away
  51. 1.97 km WSW of Cobb, California · 14274 days ago · 4 km deep · 39 km away
  52. 1.56 km W of Cobb, California · 14274 days ago · 3 km deep · 37 km away
  53. 2.026 km NNE of Potter Valley, California · 14274 days ago · 4 km deep · 53 km away
  54. 2.04 km W of Cobb, California · 14274 days ago · 0 km deep · 36 km away
  55. 2.05 km W of Cobb, California · 14273 days ago · 0 km deep · 36 km away
  56. 1.85 km W of Cobb, California · 14272 days ago · 0 km deep · 36 km away
  57. 1.79 km WNW of Cobb, California · 14272 days ago · 0 km deep · 34 km away
  58. 2.71 km E of Willits, California · 14272 days ago · 5 km deep · 63 km away
  59. 1.824 km NNE of Potter Valley, California · 14271 days ago · 6 km deep · 50 km away
  60. 2.06 km W of Cobb, California · 14271 days ago · -1 km deep · 36 km away

The first 60 of 160.

Before

  1. 2.58 km W of Cobb, California · 14289 days ago · 0 km deep · 38 km away
  2. 1.64 km SW of Cobb, California · 14290 days ago · 0 km deep · 39 km away
  3. 1.811 km SSW of Cloverdale, California · 14290 days ago · 4 km deep · 58 km away
  4. 1.75 km WSW of Cobb, California · 14291 days ago · 0 km deep · 38 km away
  5. 1.63 km NNW of Cloverdale, California · 14291 days ago · -1 km deep · 44 km away
  6. 1.65 km W of Cobb, California · 14291 days ago · 1 km deep · 35 km away
  7. 2.06 km W of Cobb, California · 14291 days ago · 4 km deep · 36 km away
  8. 2.15 km SW of Cobb, California · 14291 days ago · 2 km deep · 40 km away
  9. 1.59 km ESE of Hidden Valley Lake, California · 14292 days ago · 5 km deep · 45 km away
  10. 1.8Northern California · 14292 days ago · 1 km deep · 39 km away
  11. 1.72 km SSW of Clearlake, California · 14292 days ago · 3 km deep · 23 km away
  12. 1.97 km WSW of Cobb, California · 14293 days ago · 1 km deep · 39 km away
  13. 1.87 km WSW of Cobb, California · 14293 days ago · 2 km deep · 39 km away
  14. 1.87 km W of Cobb, California · 14294 days ago · 1 km deep · 36 km away
  15. 1.84 km SW of Cobb, California · 14294 days ago · 0 km deep · 39 km away
  16. 2.27 km W of Cobb, California · 14294 days ago · 4 km deep · 37 km away
  17. 1.74 km W of Cobb, California · 14294 days ago · 1 km deep · 37 km away
  18. 1.55 km WNW of Cobb, California · 14295 days ago · 1 km deep · 35 km away
  19. 1.56 km W of Cobb, California · 14295 days ago · 2 km deep · 38 km away
  20. 1.79 km SE of Boonville, California · 14295 days ago · 7 km deep · 55 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1152087. Read Fri, Oct 2, 2026, 6:38 PM UTC.