California earthquakes

M1.7 earthquake 4 km WSW of Cobb, California

A magnitude 1.7 earthquake struck 4 km WSW of Cobb, California on Fri, Feb 9, 1979, 5:18 PM PST (01:18 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M2.9 23 km NE of Willits, 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
1979-02-10 01:18:44 UTC
Depth
1.3 km (0.8 mi), shallow
Epicenter
38.803° N, 122.768° 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, 0.3 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
67°
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: 73 in the 60 days after this one and 32 in the 30 days before it.

After

  1. 1.610 km E of Willits, California · 17390 days ago · 2 km deep · 78 km away
  2. 2.923 km NE of Willits, California · 17389 days ago · 5 km deep · 87 km away
  3. 1.77 km ENE of Healdsburg, California · 17388 days ago · 6 km deep · 18 km away
  4. 2.46 km W of Cobb, California · 17387 days ago · 0 km deep · 3 km away
  5. 1.910 km NE of Willits, California · 17386 days ago · 3 km deep · 86 km away
  6. 2.58 km WSW of Cobb, California · 17385 days ago · 2 km deep · 4 km away
  7. 2.17 km W of Cobb, California · 17384 days ago · 1 km deep · 3 km away
  8. 1.77 km WSW of Cobb, California · 17383 days ago · 2 km deep · 3 km away
  9. 1.99 km NE of Hopland, California · 17378 days ago · 5 km deep · 36 km away
  10. 2.28 km W of Cobb, California · 17376 days ago · 1 km deep · 4 km away
  11. 2.313 km NNE of Brooktrails, California · 17376 days ago · 7 km deep · 98 km away
  12. 2.86 km W of Cobb, California · 17376 days ago · 3 km deep · 3 km away
  13. 1.78 km WSW of Cobb, California · 17375 days ago · 3 km deep · 4 km away
  14. 2.3Northern California · 17375 days ago · 4 km deep · 3 km away
  15. 2.07 km ENE of Brooktrails, California · 17373 days ago · 5 km deep · 87 km away
  16. 2.46 km W of Cobb, California · 17372 days ago · 4 km deep · 4 km away
  17. 1.86 km E of Woodland, California · 17372 days ago · 12 km deep · 94 km away
  18. 2.37 km W of Cobb, California · 17370 days ago · 3 km deep · 4 km away
  19. 2.06 km ESE of Willits, California · 17369 days ago · 10 km deep · 79 km away
  20. 2.32 km SSW of Monument Hills, California · 17369 days ago · 9 km deep · 78 km away
  21. 1.87 km W of Cobb, California · 17368 days ago · 0 km deep · 4 km away
  22. 2.42 km ESE of Calpella, California · 17366 days ago · 6 km deep · 58 km away
  23. 2.07 km NNW of Redwood Valley, California · 17365 days ago · 7 km deep · 71 km away
  24. 2.323 km NE of Potter Valley, California · 17365 days ago · 10 km deep · 78 km away
  25. 1.86 km WSW of Cobb, California · 17365 days ago · 1 km deep · 2 km away
  26. 2.68 km WSW of Cobb, California · 17364 days ago · 3 km deep · 4 km away
  27. 2.816 km NNE of Nice, California · 17363 days ago · 7 km deep · 50 km away
  28. 2.617 km NNE of Nice, California · 17362 days ago · 4 km deep · 50 km away
  29. 1.711 km E of Lower Lake, California · 17360 days ago · 15 km deep · 29 km away
  30. 2.14 km WSW of Cobb, California · 17360 days ago · 1 km deep · 0 km away
  31. 2.38 km ENE of Lower Lake, California · 17360 days ago · 9 km deep · 26 km away
  32. 1.55 km SSE of Moskowite Corner, California · 17359 days ago · 5 km deep · 69 km away
  33. 2.315 km E of Angwin, California · 17358 days ago · 2 km deep · 49 km away
  34. 1.916 km E of Potter Valley, California · 17357 days ago · 2 km deep · 61 km away
  35. 2.04 km WSW of Cobb, California · 17357 days ago · 4 km deep · 1 km away
  36. 2.110 km NNE of Brooktrails, California · 17356 days ago · 8 km deep · 94 km away
  37. 2.17 km W of Cobb, California · 17356 days ago · 3 km deep · 4 km away
  38. 2.13 km ESE of Calpella, California · 17356 days ago · 6 km deep · 58 km away
  39. 1.813 km E of Hidden Valley Lake, California · 17355 days ago · 8 km deep · 31 km away
  40. 2.16 km WSW of Cobb, California · 17355 days ago · 1 km deep · 2 km away
  41. 2.86 km W of Cobb, California · 17354 days ago · 3 km deep · 3 km away
  42. 2.015 km NNE of Angwin, California · 17352 days ago · 11 km deep · 36 km away
  43. 1.614 km NNE of Angwin, California · 17352 days ago · 4 km deep · 35 km away
  44. 1.99 km SSE of Hopland, California · 17352 days ago · 5 km deep · 28 km away
  45. 1.74 km WSW of Cobb, California · 17352 days ago · 1 km deep · 0 km away
  46. 1.96 km N of Cloverdale, California · 17351 days ago · 6 km deep · 23 km away
  47. 2.06 km N of Cloverdale, California · 17351 days ago · 5 km deep · 22 km away
  48. 2.2Northern California · 17351 days ago · -1 km deep · 55 km away
  49. 1.916 km WSW of Guinda, California · 17351 days ago · 5 km deep · 35 km away
  50. 1.65 km ESE of Clearlake Oaks, California · 17349 days ago · 2 km deep · 27 km away
  51. 2.16 km W of Cobb, California · 17349 days ago · 4 km deep · 3 km away
  52. 1.85 km SE of Santa Rosa, California · 17349 days ago · 10 km deep · 44 km away
  53. 1.98 km NNE of Hopland, California · 17348 days ago · 2 km deep · 38 km away
  54. 1.88 km NNE of Hopland, California · 17348 days ago · 0 km deep · 39 km away
  55. 2.319 km NE of Upper Lake, California · 17348 days ago · 8 km deep · 56 km away
  56. 1.86 km ENE of Brooktrails, California · 17347 days ago · 4 km deep · 87 km away
  57. 1.70 km NNE of Larkfield-Wikiup, California · 17345 days ago · 4 km deep · 32 km away
  58. 1.58 km WSW of Cobb, California · 17345 days ago · 4 km deep · 4 km away
  59. 1.69 km E of Willits, California · 17344 days ago · 4 km deep · 78 km away
  60. 1.65 km ENE of Lucerne, California · 17343 days ago · 8 km deep · 34 km away

The first 60 of 73.

Before

  1. 1.74 km WSW of Cobb, California · 17392 days ago · 2 km deep · 0 km away
  2. 1.61 km WSW of Guinda, California · 17393 days ago · 5 km deep · 49 km away
  3. 1.97 km ENE of Hopland, California · 17393 days ago · 5 km deep · 31 km away
  4. 2.012 km NE of Brooktrails, California · 17393 days ago · 7 km deep · 93 km away
  5. 2.78 km WNW of Princeton, California · 17396 days ago · 16 km deep · 90 km away
  6. 2.410 km SE of Dunnigan, California · 17397 days ago · 9 km deep · 76 km away
  7. 2.57 km W of Cobb, California · 17398 days ago · 4 km deep · 4 km away
  8. 2.09 km S of Moskowite Corner, California · 17399 days ago · 7 km deep · 70 km away
  9. 2.07 km NE of Inverness, California · 17399 days ago · 0 km deep · 74 km away
  10. 1.52 km ENE of Clear Lake Riviera, California · 17402 days ago · 3 km deep · 19 km away
  11. 2.54 km WSW of Cobb, California · 17402 days ago · 2 km deep · 0 km away
  12. 1.67 km W of Cobb, California · 17402 days ago · -1 km deep · 4 km away
  13. 1.95 km ESE of Healdsburg, California · 17403 days ago · 6 km deep · 23 km away
  14. 2.06 km W of Cobb, California · 17403 days ago · 4 km deep · 3 km away
  15. 2.68 km E of Willits, California · 17403 days ago · 9 km deep · 79 km away
  16. 3.08 km E of Willits, California · 17403 days ago · 8 km deep · 79 km away
  17. 2.07 km W of Cobb, California · 17403 days ago · 3 km deep · 4 km away
  18. 1.68 km W of Cobb, California · 17404 days ago · 1 km deep · 5 km away
  19. 2.08 km E of Willits, California · 17405 days ago · 7 km deep · 79 km away
  20. 2.54 km SSE of Dunnigan, California · 17406 days ago · 8 km deep · 70 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1044604. Read Tue, Sep 22, 2026, 10:27 PM UTC.