California earthquakes

M1.7 earthquake 7 km W of Cobb, California

A magnitude 1.7 earthquake struck 7 km W of Cobb, California on Fri, Mar 10, 1978, 2:11 PM PST (22:11 UTC), 1 km (0 mi) below the surface.

A larger quake followed: M2.4 4 km SE of Calpella, California. This one was a foreshock.

Cobb 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
1.7 (md), micro
Local time
UTC
1978-03-10 22:11:29 UTC
Depth
0.8 km (0.5 mi), shallow
Epicenter
38.824° N, 122.807° 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 0.2 km horizontally, 0.4 km in depth
Magnitude uncertainty
±0.27
Depth from
From location
Station coverage gap
47°
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: 199 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 2.44 km SE of Calpella, California · 17712 days ago · 4 km deep · 53 km away
  2. 2.33 km SE of Calpella, California · 17712 days ago · 4 km deep · 54 km away
  3. 2.86 km NE of Ukiah, California · 17712 days ago · 6 km deep · 51 km away
  4. 2.15 km SE of Calpella, California · 17712 days ago · 2 km deep · 51 km away
  5. 2.11 km ENE of Calpella, California · 17712 days ago · 6 km deep · 56 km away
  6. 2.83 km SE of Calpella, California · 17712 days ago · 4 km deep · 54 km away
  7. 2.55 km NE of Ukiah, California · 17712 days ago · -1 km deep · 51 km away
  8. 1.77 km WSW of Cobb, California · 17712 days ago · 1 km deep · 2 km away
  9. 2.14 km SE of Calpella, California · 17712 days ago · 3 km deep · 53 km away
  10. 1.70 km W of Redwood Valley, California · 17712 days ago · -1 km deep · 60 km away
  11. 3.14 km SE of Calpella, California · 17712 days ago · 12 km deep · 52 km away
  12. 1.82 km ESE of Calpella, California · 17712 days ago · -1 km deep · 55 km away
  13. 2.43 km ESE of Calpella, California · 17712 days ago · 8 km deep · 54 km away
  14. 2.54 km SE of Calpella, California · 17712 days ago · 8 km deep · 53 km away
  15. 1.88 km NNE of Hopland, California · 17712 days ago · 0 km deep · 35 km away
  16. 2.22 km SE of Calpella, California · 17712 days ago · 4 km deep · 54 km away
  17. 2.03 km ESE of Calpella, California · 17712 days ago · 8 km deep · 54 km away
  18. 2.43 km ESE of Calpella, California · 17712 days ago · 5 km deep · 54 km away
  19. 2.84 km SSE of Calpella, California · 17711 days ago · 3 km deep · 52 km away
  20. 2.03 km SE of Calpella, California · 17711 days ago · 4 km deep · 54 km away
  21. 3.25 km SE of Calpella, California · 17711 days ago · 11 km deep · 51 km away
  22. 2.95 km SE of Calpella, California · 17711 days ago · 10 km deep · 52 km away
  23. 2.03 km SE of Calpella, California · 17711 days ago · 7 km deep · 53 km away
  24. 1.94 km SE of Calpella, California · 17711 days ago · 10 km deep · 53 km away
  25. 2.94 km SSE of Calpella, California · 17711 days ago · 11 km deep · 53 km away
  26. 2.24 km SE of Calpella, California · 17711 days ago · 9 km deep · 53 km away
  27. 1.83 km ESE of Calpella, California · 17711 days ago · 8 km deep · 54 km away
  28. 2.23 km SE of Calpella, California · 17711 days ago · 9 km deep · 53 km away
  29. 1.93 km ESE of Calpella, California · 17711 days ago · 7 km deep · 54 km away
  30. 2.00 km SE of Calpella, California · 17711 days ago · 6 km deep · 56 km away
  31. 2.01 km SE of Calpella, California · 17711 days ago · 2 km deep · 55 km away
  32. 3.14 km N of Talmage, California · 17711 days ago · 10 km deep · 50 km away
  33. 2.05 km SE of Calpella, California · 17711 days ago · 3 km deep · 52 km away
  34. 2.74 km SSE of Calpella, California · 17711 days ago · 5 km deep · 53 km away
  35. 1.62 km ESE of Calpella, California · 17711 days ago · 4 km deep · 55 km away
  36. 1.95 km SE of Calpella, California · 17711 days ago · 7 km deep · 52 km away
  37. 2.54 km ESE of Calpella, California · 17711 days ago · 9 km deep · 53 km away
  38. 2.63 km ESE of Calpella, California · 17710 days ago · 11 km deep · 54 km away
  39. 1.83 km ESE of Calpella, California · 17710 days ago · 12 km deep · 54 km away
  40. 1.84 km SE of Calpella, California · 17710 days ago · 8 km deep · 53 km away
  41. 1.93 km E of Calpella, California · 17710 days ago · 8 km deep · 55 km away
  42. 1.82 km NNW of Redwood Valley, California · 17710 days ago · 8 km deep · 62 km away
  43. 1.87 km W of Cobb, California · 17710 days ago · 1 km deep · 2 km away
  44. 2.12 km ESE of Calpella, California · 17710 days ago · 10 km deep · 55 km away
  45. 1.86 km W of Cobb, California · 17709 days ago · 0 km deep · 2 km away
  46. 1.76 km WNW of Cobb, California · 17709 days ago · 2 km deep · 2 km away
  47. 1.94 km SE of Calpella, California · 17709 days ago · 0 km deep · 52 km away
  48. 1.87 km WSW of Cobb, California · 17708 days ago · 1 km deep · 2 km away
  49. 1.84 km SSE of Calpella, California · 17708 days ago · -1 km deep · 53 km away
  50. 1.73 km SE of Calpella, California · 17707 days ago · 2 km deep · 54 km away
  51. 3.319 km W of Jenner, California · 17707 days ago · 3 km deep · 60 km away
  52. 2.117 km WNW of Jenner, California · 17707 days ago · 2 km deep · 54 km away
  53. 1.819 km WNW of Jenner, California · 17707 days ago · 6 km deep · 58 km away
  54. 1.85 km SE of Willows, California · 17707 days ago · 20 km deep · 94 km away
  55. 1.81 km SE of Calpella, California · 17707 days ago · 4 km deep · 56 km away
  56. 1.64 km ESE of Calpella, California · 17707 days ago · 5 km deep · 54 km away
  57. 1.93 km ESE of Calpella, California · 17707 days ago · 6 km deep · 54 km away
  58. 1.95 km NE of Ukiah, California · 17707 days ago · 0 km deep · 51 km away
  59. 1.93 km ESE of Calpella, California · 17707 days ago · 6 km deep · 54 km away
  60. 1.73 km ESE of Calpella, California · 17707 days ago · 4 km deep · 54 km away

The first 60 of 199.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1039236. Read Tue, Sep 22, 2026, 11:19 AM UTC.