California earthquakes

M1.7 earthquake 4 km WSW of Cobb, California

A magnitude 1.7 earthquake struck 4 km WSW of Cobb, California on Tue, Jul 3, 1979, 10:37 PM PDT (05:37 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M3.4 6 km WSW of Cobb, 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, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1979-07-04 05:37:49 UTC
Depth
1.1 km (0.7 mi), shallow
Epicenter
38.805° N, 122.770° 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
±0.13
Depth from
From location
Station coverage gap
69°
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: 77 in the 60 days after this one and 38 in the 30 days before it.

After

  1. 1.810 km NNW of Potter Valley, California · 17256 days ago · 4 km deep · 75 km away
  2. 1.65 km NNE of Clearlake, California · 17255 days ago · 1 km deep · 26 km away
  3. 1.816 km WSW of Stonyford, California · 17255 days ago · 4 km deep · 55 km away
  4. 1.817 km WSW of Stonyford, California · 17255 days ago · 4 km deep · 54 km away
  5. 1.88 km W of Upper Lake, California · 17255 days ago · 4 km deep · 44 km away
  6. 1.715 km WSW of Stonyford, California · 17255 days ago · 4 km deep · 56 km away
  7. 2.17 km ESE of Boonville, California · 17252 days ago · 2 km deep · 49 km away
  8. 1.73 km W of Clear Lake Riviera, California · 17251 days ago · 4 km deep · 17 km away
  9. 2.58 km ESE of Willits, California · 17251 days ago · 1 km deep · 77 km away
  10. 1.64 km WSW of Cobb, California · 17250 days ago · 3 km deep · 0 km away
  11. 1.66 km WSW of Cobb, California · 17250 days ago · 0 km deep · 2 km away
  12. 2.35 km E of Comptche, California · 17246 days ago · 8 km deep · 83 km away
  13. 1.82 km E of Comptche, California · 17246 days ago · 8 km deep · 86 km away
  14. 2.38 km WSW of Cobb, California · 17246 days ago · 0 km deep · 4 km away
  15. 2.37 km W of Cobb, California · 17246 days ago · 1 km deep · 4 km away
  16. 1.818 km NNE of Nice, California · 17245 days ago · 10 km deep · 51 km away
  17. 2.22 km NNW of Bloomfield, California · 17245 days ago · 0 km deep · 53 km away
  18. 1.911 km N of Upper Lake, California · 17245 days ago · 3 km deep · 52 km away
  19. 1.69 km W of Cobb, California · 17245 days ago · 1 km deep · 5 km away
  20. 2.53 km SSW of Black Point-Green Point, California · 17245 days ago · 5 km deep · 83 km away
  21. 2.43 km NNW of Larkfield-Wikiup, California · 17245 days ago · 4 km deep · 29 km away
  22. 1.82 km NNW of Larkfield-Wikiup, California · 17245 days ago · 3 km deep · 30 km away
  23. 2.05 km SE of Calpella, California · 17243 days ago · 3 km deep · 56 km away
  24. 1.95 km SE of Calpella, California · 17242 days ago · 0 km deep · 55 km away
  25. 1.72 km N of Rutherford, California · 17242 days ago · 14 km deep · 46 km away
  26. 1.65 km NE of Ukiah, California · 17241 days ago · 2 km deep · 55 km away
  27. 1.76 km WSW of Cobb, California · 17241 days ago · 1 km deep · 2 km away
  28. 1.73 km N of Rutherford, California · 17241 days ago · 13 km deep · 46 km away
  29. 1.914 km E of Potter Valley, California · 17240 days ago · 9 km deep · 61 km away
  30. 2.17 km WSW of Cobb, California · 17240 days ago · 2 km deep · 3 km away
  31. 1.81 km NNW of Larkfield-Wikiup, California · 17239 days ago · 3 km deep · 31 km away
  32. 1.66 km S of Green Valley, California · 17238 days ago · 8 km deep · 85 km away
  33. 1.76 km W of Cobb, California · 17238 days ago · 4 km deep · 3 km away
  34. 2.46 km WSW of Cobb, California · 17237 days ago · 1 km deep · 2 km away
  35. 1.56 km ENE of Hopland, California · 17236 days ago · 7 km deep · 32 km away
  36. 1.72 km N of Comptche, California · 17235 days ago · 4 km deep · 89 km away
  37. 1.97 km WSW of Cobb, California · 17235 days ago · -1 km deep · 3 km away
  38. 1.92 km WNW of Redwood Valley, California · 17235 days ago · 6 km deep · 66 km away
  39. 1.56 km W of Cobb, California · 17234 days ago · 3 km deep · 3 km away
  40. 2.64 km E of Philo, California · 17233 days ago · 5 km deep · 61 km away
  41. 1.64 km WSW of Cobb, California · 17232 days ago · 3 km deep · 0 km away
  42. 2.48 km WSW of Cobb, California · 17232 days ago · 4 km deep · 4 km away
  43. 1.62 km SE of Larkfield-Wikiup, California · 17231 days ago · 3 km deep · 34 km away
  44. 2.39 km WSW of Cobb, California · 17229 days ago · 1 km deep · 5 km away
  45. 1.86 km SW of Kenwood, California · 17228 days ago · 10 km deep · 49 km away
  46. 1.78 km NNE of Hopland, California · 17228 days ago · 1 km deep · 38 km away
  47. 2.17 km WSW of Cobb, California · 17227 days ago · -1 km deep · 4 km away
  48. 2.26 km N of Kenwood, California · 17226 days ago · 10 km deep · 41 km away
  49. 2.12 km NNE of Talmage, California · 17224 days ago · 6 km deep · 51 km away
  50. 1.92 km WNW of Redwood Valley, California · 17223 days ago · 6 km deep · 66 km away
  51. 1.65 km SSE of Moskowite Corner, California · 17222 days ago · 8 km deep · 69 km away
  52. 2.05 km SSW of Boonville, California · 17221 days ago · 4 km deep · 56 km away
  53. 1.83 km NNE of Hopland, California · 17221 days ago · 3 km deep · 36 km away
  54. 3.46 km WSW of Cobb, California · 17219 days ago · -1 km deep · 2 km away
  55. 1.57 km WSW of Cobb, California · 17219 days ago · 6 km deep · 3 km away
  56. 1.64 km WSW of Cobb, California · 17218 days ago · 3 km deep · 0 km away
  57. 2.31 km WSW of Fairfield, California · 17218 days ago · 15 km deep · 88 km away
  58. 1.77 km W of Cobb, California · 17217 days ago · 3 km deep · 4 km away
  59. 1.66 km WSW of Cobb, California · 17216 days ago · 0 km deep · 2 km away
  60. 2.44 km SE of Calpella, California · 17216 days ago · 6 km deep · 56 km away

The first 60 of 77.

Before

  1. 2.57 km WSW of Cobb, California · 17259 days ago · 3 km deep · 3 km away
  2. 2.06 km W of Cobb, California · 17259 days ago · 4 km deep · 3 km away
  3. 2.06 km W of Cobb, California · 17260 days ago · 4 km deep · 3 km away
  4. 3.06 km W of Cobb, California · 17260 days ago · 4 km deep · 3 km away
  5. 2.48 km W of Cobb, California · 17260 days ago · 0 km deep · 4 km away
  6. 1.56 km ESE of Boonville, California · 17260 days ago · 1 km deep · 50 km away
  7. 2.16 km ESE of Boonville, California · 17260 days ago · 2 km deep · 50 km away
  8. 1.86 km ESE of Boonville, California · 17260 days ago · 1 km deep · 49 km away
  9. 1.89 km ESE of Black Point-Green Point, California · 17260 days ago · 8 km deep · 86 km away
  10. 1.62 km ESE of Calpella, California · 17260 days ago · -1 km deep · 58 km away
  11. 2.24 km ESE of Clearlake Oaks, California · 17261 days ago · 0 km deep · 26 km away
  12. 1.56 km WNW of Cobb, California · 17261 days ago · 2 km deep · 4 km away
  13. 2.223 km ENE of Potter Valley, California · 17262 days ago · 12 km deep · 67 km away
  14. 2.03 km SE of Clear Lake Riviera, California · 17262 days ago · 5 km deep · 16 km away
  15. 2.17 km NNE of Cloverdale, California · 17264 days ago · 4 km deep · 21 km away
  16. 1.67 km NW of Cloverdale, California · 17265 days ago · 24 km deep · 27 km away
  17. 1.77 km WSW of Cobb, California · 17266 days ago · -1 km deep · 3 km away
  18. 3.17 km NE of Willits, California · 17270 days ago · 8 km deep · 85 km away
  19. 2.06 km WSW of Kenwood, California · 17271 days ago · 8 km deep · 48 km away
  20. 1.93 km SSE of Green Valley, California · 17271 days ago · 8 km deep · 84 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1046435. Read Sat, Oct 3, 2026, 2:46 PM UTC.