California earthquakes

M1.8 earthquake 7 km WSW of Cobb, California

A magnitude 1.8 earthquake struck 7 km WSW of Cobb, California on Tue, Jan 20, 1976, 9:11 PM PST (05:11 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M2.5 17 km ENE of Potter Valley, 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
1.8 (md), micro
Local time
UTC
1976-01-21 05:11:03 UTC
Depth
0.9 km (0.6 mi), shallow
Epicenter
38.802° N, 122.805° 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, 0.5 km in depth
Magnitude uncertainty
±0.23
Depth from
From location
Station coverage gap
67°
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: 63 in the 60 days after this one and 27 in the 30 days before it.

After

  1. 1.77 km WSW of Cobb, California · 18508 days ago · 1 km deep · 0 km away
  2. 1.814 km NE of Nice, California · 18506 days ago · 7 km deep · 47 km away
  3. 2.517 km ENE of Potter Valley, California · 18506 days ago · -1 km deep · 64 km away
  4. 3.022 km ENE of Potter Valley, California · 18505 days ago · 11 km deep · 66 km away
  5. 2.54 km WSW of Cobb, California · 18502 days ago · 4 km deep · 3 km away
  6. 2.17 km WSW of Cobb, California · 18502 days ago · 0 km deep · 1 km away
  7. 1.614 km SSE of Boonville, California · 18497 days ago · 4 km deep · 43 km away
  8. 2.319 km ENE of Potter Valley, California · 18496 days ago · 10 km deep · 66 km away
  9. 2.422 km NE of Potter Valley, California · 18496 days ago · 9 km deep · 72 km away
  10. 2.07 km W of Cobb, California · 18496 days ago · 1 km deep · 2 km away
  11. 1.82 km S of Clearlake, California · 18495 days ago · 3 km deep · 21 km away
  12. 1.77 km W of Cobb, California · 18495 days ago · 3 km deep · 2 km away
  13. 1.72 km N of Larkfield-Wikiup, California · 18493 days ago · 8 km deep · 30 km away
  14. 1.88 km SE of Hopland, California · 18491 days ago · 1 km deep · 25 km away
  15. 2.16 km W of Cobb, California · 18491 days ago · 1 km deep · 2 km away
  16. 1.76 km W of Cobb, California · 18490 days ago · 4 km deep · 2 km away
  17. 1.55 km E of Cloverdale, California · 18489 days ago · 0 km deep · 13 km away
  18. 2.316 km NE of Nice, California · 18489 days ago · 8 km deep · 48 km away
  19. 1.77 km W of Cobb, California · 18489 days ago · 3 km deep · 2 km away
  20. 1.67 km WSW of Cobb, California · 18487 days ago · 3 km deep · 1 km away
  21. 2.63 km NE of Santa Rosa, California · 18485 days ago · 8 km deep · 39 km away
  22. 3.614 km SSW of Willits, California · 18482 days ago · 11 km deep · 74 km away
  23. 2.57 km W of Cobb, California · 18482 days ago · 4 km deep · 1 km away
  24. 2.17 km W of Cobb, California · 18482 days ago · 3 km deep · 1 km away
  25. 1.87 km W of Cobb, California · 18482 days ago · 3 km deep · 1 km away
  26. 1.74 km WSW of Cobb, California · 18480 days ago · 2 km deep · 3 km away
  27. 1.96 km WSW of Cobb, California · 18480 days ago · 1 km deep · 1 km away
  28. 2.16 km W of Cobb, California · 18478 days ago · 3 km deep · 2 km away
  29. 1.97 km W of Cobb, California · 18476 days ago · 0 km deep · 3 km away
  30. 2.57 km W of Cobb, California · 18473 days ago · 0 km deep · 1 km away
  31. 2.54 km E of Geyserville, California · 18473 days ago · 4 km deep · 12 km away
  32. 2.44 km ENE of Kenwood, California · 18473 days ago · 8 km deep · 49 km away
  33. 2.28 km WSW of Cobb, California · 18473 days ago · 4 km deep · 1 km away
  34. 1.58 km W of Cobb, California · 18471 days ago · -1 km deep · 1 km away
  35. 2.47 km WSW of Cobb, California · 18471 days ago · -1 km deep · 1 km away
  36. 1.57 km W of Cobb, California · 18467 days ago · 2 km deep · 2 km away
  37. 2.76 km W of Cobb, California · 18465 days ago · 4 km deep · 2 km away
  38. 1.96 km W of Cobb, California · 18465 days ago · 3 km deep · 2 km away
  39. 2.34 km WSW of Cobb, California · 18464 days ago · 3 km deep · 3 km away
  40. 3.14 km WSW of Cobb, California · 18464 days ago · 1 km deep · 3 km away
  41. 3.37 km WSW of Cobb, California · 18462 days ago · 0 km deep · 0 km away
  42. 1.78 km WSW of Cobb, California · 18462 days ago · 1 km deep · 1 km away
  43. 1.88 km W of Cobb, California · 18461 days ago · -1 km deep · 2 km away
  44. 1.97 km W of Cobb, California · 18460 days ago · 3 km deep · 1 km away
  45. 2.37 km W of Cobb, California · 18460 days ago · 3 km deep · 2 km away
  46. 1.67 km W of Cobb, California · 18460 days ago · 3 km deep · 2 km away
  47. 2.04 km W of Hopland, California · 18459 days ago · 7 km deep · 37 km away
  48. 2.16 km W of Cobb, California · 18459 days ago · 0 km deep · 1 km away
  49. 2.87 km W of Cobb, California · 18458 days ago · 4 km deep · 2 km away
  50. 1.68 km WSW of Cobb, California · 18454 days ago · -1 km deep · 1 km away
  51. 1.86 km S of Clear Lake Riviera, California · 18453 days ago · 4 km deep · 13 km away
  52. 1.66 km S of Clear Lake Riviera, California · 18453 days ago · 2 km deep · 13 km away
  53. 1.92 km SE of Clear Lake Riviera, California · 18453 days ago · 1 km deep · 17 km away
  54. 1.69 km W of Cobb, California · 18452 days ago · 0 km deep · 2 km away
  55. 1.88 km WSW of Cobb, California · 18451 days ago · 4 km deep · 1 km away
  56. 1.67 km W of Cobb, California · 18451 days ago · 4 km deep · 2 km away
  57. 1.98 km W of Cobb, California · 18450 days ago · 0 km deep · 1 km away
  58. 1.78 km WSW of Cobb, California · 18450 days ago · 1 km deep · 1 km away
  59. 2.78 km WSW of Cobb, California · 18450 days ago · 1 km deep · 1 km away
  60. 1.67 km E of Hopland, California · 18450 days ago · 7 km deep · 28 km away

The first 60 of 63.

Before

  1. 1.78 km WSW of Cobb, California · 18508 days ago · 4 km deep · 1 km away
  2. 2.010 km W of Cobb, California · 18508 days ago · 1 km deep · 4 km away
  3. 3.36 km WSW of Cobb, California · 18510 days ago · -1 km deep · 1 km away
  4. 3.46 km W of North Lakeport, California · 18511 days ago · 6 km deep · 36 km away
  5. 2.08 km WSW of Cobb, California · 18513 days ago · 4 km deep · 1 km away
  6. 1.98 km WSW of Cobb, California · 18513 days ago · 3 km deep · 1 km away
  7. 1.91 km WNW of Lakeport, California · 18513 days ago · 19 km deep · 29 km away
  8. 1.63 km SE of Clear Lake Riviera, California · 18514 days ago · 0 km deep · 17 km away
  9. 1.64 km WSW of Cobb, California · 18515 days ago · 1 km deep · 3 km away
  10. 2.27 km W of Cobb, California · 18518 days ago · 3 km deep · 1 km away
  11. 2.18 km WSW of Cobb, California · 18519 days ago · 3 km deep · 1 km away
  12. 1.76 km W of Cobb, California · 18521 days ago · 3 km deep · 2 km away
  13. 2.36 km E of Willits, California · 18523 days ago · 2 km deep · 78 km away
  14. 1.56 km W of Cobb, California · 18523 days ago · 0 km deep · 2 km away
  15. 1.67 km W of Cobb, California · 18523 days ago · 3 km deep · 2 km away
  16. 1.64 km WSW of Cobb, California · 18524 days ago · 1 km deep · 3 km away
  17. 1.66 km W of Cobb, California · 18524 days ago · 3 km deep · 2 km away
  18. 2.420 km WSW of Stonyford, California · 18524 days ago · 6 km deep · 56 km away
  19. 1.5Northern California · 18528 days ago · 3 km deep · 9 km away
  20. 1.611 km NNE of Hopland, California · 18530 days ago · 6 km deep · 36 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1028492. Read Tue, Sep 22, 2026, 8:59 PM UTC.