California earthquakes

M1.7 earthquake 8 km WSW of Cobb, California

A magnitude 1.7 earthquake struck 8 km WSW of Cobb, California on Wed, Oct 24, 1979, 7:36 PM PDT (02:36 UTC), 1 km (0 mi) below the surface.

A larger quake followed: M2.5 4 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), micro
Local time
UTC
1979-10-25 02:36:15 UTC
Depth
0.6 km (0.4 mi), shallow
Epicenter
38.801° N, 122.813° 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
±0.11
Depth from
From location
Station coverage gap
72°
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: 95 in the 60 days after this one and 42 in the 30 days before it.

After

  1. 1.66 km W of Cobb, California · 17135 days ago · 0 km deep · 2 km away
  2. 1.76 km SW of Napa, California · 17132 days ago · 6 km deep · 74 km away
  3. 2.54 km WSW of Cobb, California · 17129 days ago · 1 km deep · 4 km away
  4. 1.57 km W of Cobb, California · 17128 days ago · 3 km deep · 2 km away
  5. 1.96 km WSW of Cobb, California · 17128 days ago · 0 km deep · 1 km away
  6. 1.78 km SE of Moskowite Corner, California · 17126 days ago · 8 km deep · 75 km away
  7. 1.66 km W of Cobb, California · 17125 days ago · 4 km deep · 2 km away
  8. 2.010 km ESE of Willits, California · 17123 days ago · 2 km deep · 74 km away
  9. 1.918 km ENE of Potter Valley, California · 17123 days ago · 4 km deep · 64 km away
  10. 2.24 km WSW of Cobb, California · 17123 days ago · 4 km deep · 4 km away
  11. 1.94 km WSW of Cobb, California · 17123 days ago · 2 km deep · 3 km away
  12. 2.29 km E of Angwin, California · 17122 days ago · 7 km deep · 49 km away
  13. 2.06 km W of Cobb, California · 17120 days ago · 3 km deep · 2 km away
  14. 2.64 km NW of Anchor Bay, California · 17120 days ago · 4 km deep · 70 km away
  15. 1.76 km ENE of Windsor, California · 17120 days ago · 4 km deep · 25 km away
  16. 1.617 km NE of Nice, California · 17120 days ago · 8 km deep · 49 km away
  17. 1.67 km WSW of Cobb, California · 17120 days ago · 2 km deep · 1 km away
  18. 2.59 km NW of Potter Valley, California · 17116 days ago · 16 km deep · 72 km away
  19. 1.67 km WSW of Cobb, California · 17115 days ago · 0 km deep · 1 km away
  20. 1.97 km W of Cobb, California · 17115 days ago · 1 km deep · 2 km away
  21. 2.06 km W of Cobb, California · 17114 days ago · 3 km deep · 2 km away
  22. 2.49 km SE of Willits, California · 17113 days ago · 8 km deep · 74 km away
  23. 2.1Northern California · 17112 days ago · 2 km deep · 4 km away
  24. 2.07 km N of Cobb, California · 17111 days ago · 1 km deep · 13 km away
  25. 2.85 km WSW of Glen Ellen, California · 17111 days ago · 7 km deep · 55 km away
  26. 1.84 km WSW of Cobb, California · 17110 days ago · 1 km deep · 4 km away
  27. 1.59 km WSW of Cobb, California · 17108 days ago · -1 km deep · 2 km away
  28. 1.73 km ESE of Calpella, California · 17108 days ago · 6 km deep · 56 km away
  29. 1.94 km WSW of Cobb, California · 17107 days ago · 1 km deep · 4 km away
  30. 3.026 km SE of Covelo, California · 17106 days ago · 12 km deep · 92 km away
  31. 3.07 km WSW of Cobb, California · 17106 days ago · 1 km deep · 1 km away
  32. 1.87 km W of Cobb, California · 17104 days ago · 3 km deep · 1 km away
  33. 2.810 km NE of Healdsburg, California · 17103 days ago · 5 km deep · 16 km away
  34. 1.611 km NE of Healdsburg, California · 17103 days ago · 4 km deep · 15 km away
  35. 2.010 km NE of Healdsburg, California · 17102 days ago · 4 km deep · 15 km away
  36. 2.010 km ENE of Clearlake Oaks, California · 17102 days ago · 6 km deep · 37 km away
  37. 2.110 km NE of Healdsburg, California · 17102 days ago · 5 km deep · 15 km away
  38. 1.811 km NE of Healdsburg, California · 17102 days ago · 5 km deep · 15 km away
  39. 1.511 km ENE of Healdsburg, California · 17102 days ago · 0 km deep · 16 km away
  40. 2.011 km NE of Healdsburg, California · 17102 days ago · 5 km deep · 15 km away
  41. 2.26 km W of Cobb, California · 17101 days ago · 3 km deep · 2 km away
  42. 1.95 km NNE of Kenwood, California · 17099 days ago · 9 km deep · 46 km away
  43. 1.88 km WSW of Cobb, California · 17096 days ago · 1 km deep · 1 km away
  44. 1.66 km WSW of Cobb, California · 17095 days ago · 1 km deep · 2 km away
  45. 1.58 km W of Cobb, California · 17095 days ago · 1 km deep · 2 km away
  46. 2.08 km W of Cobb, California · 17095 days ago · 1 km deep · 3 km away
  47. 1.57 km W of Cobb, California · 17095 days ago · 1 km deep · 3 km away
  48. 1.67 km W of Cobb, California · 17094 days ago · 1 km deep · 3 km away
  49. 1.97 km WSW of Cobb, California · 17094 days ago · 0 km deep · 1 km away
  50. 1.58 km WSW of Cobb, California · 17093 days ago · 1 km deep · 1 km away
  51. 1.98 km W of Cobb, California · 17093 days ago · 1 km deep · 1 km away
  52. 1.95 km NW of Redwood Valley, California · 17093 days ago · 7 km deep · 67 km away
  53. 1.87 km W of Cobb, California · 17092 days ago · 0 km deep · 2 km away
  54. 2.06 km W of Cobb, California · 17091 days ago · 1 km deep · 2 km away
  55. 1.96 km W of Cobb, California · 17091 days ago · 1 km deep · 2 km away
  56. 1.69 km WSW of Cobb, California · 17090 days ago · 1 km deep · 2 km away
  57. 1.66 km E of Cloverdale, California · 17090 days ago · 2 km deep · 11 km away
  58. 1.98 km WSW of Cobb, California · 17090 days ago · 1 km deep · 0 km away
  59. 1.86 km WSW of Cobb, California · 17089 days ago · 0 km deep · 2 km away
  60. 1.66 km WSW of Cobb, California · 17089 days ago · 1 km deep · 2 km away

The first 60 of 95.

Before

  1. 1.63 km S of Geyserville, California · 17135 days ago · 4 km deep · 16 km away
  2. 1.92 km ESE of Calpella, California · 17135 days ago · 4 km deep · 57 km away
  3. 2.12 km ESE of Calpella, California · 17135 days ago · 5 km deep · 57 km away
  4. 2.32 km ESE of Calpella, California · 17135 days ago · 4 km deep · 57 km away
  5. 1.54 km WSW of Cobb, California · 17135 days ago · 1 km deep · 4 km away
  6. 2.311 km N of Moskowite Corner, California · 17136 days ago · 3 km deep · 62 km away
  7. 1.56 km W of Cobb, California · 17137 days ago · 3 km deep · 2 km away
  8. 1.84 km WSW of Cobb, California · 17139 days ago · 1 km deep · 4 km away
  9. 2.110 km ESE of Hidden Valley Lake, California · 17141 days ago · 6 km deep · 32 km away
  10. 2.34 km WSW of Cobb, California · 17144 days ago · 1 km deep · 4 km away
  11. 1.72 km E of Calpella, California · 17145 days ago · 8 km deep · 58 km away
  12. 1.76 km ENE of Hopland, California · 17146 days ago · 5 km deep · 28 km away
  13. 2.44 km WSW of Cobb, California · 17146 days ago · 4 km deep · 4 km away
  14. 3.09 km N of Green Valley, California · 17146 days ago · 11 km deep · 75 km away
  15. 2.89 km NE of Benicia, California · 17146 days ago · 5 km deep · 98 km away
  16. 1.67 km NNE of Geyserville, California · 17147 days ago · 9 km deep · 7 km away
  17. 1.63 km SW of Clearlake Oaks, California · 17148 days ago · -1 km deep · 24 km away
  18. 1.510 km W of Hopland, California · 17149 days ago · 6 km deep · 41 km away
  19. 1.74 km SE of Calpella, California · 17150 days ago · 4 km deep · 54 km away
  20. 1.912 km ESE of Hidden Valley Lake, California · 17150 days ago · 6 km deep · 33 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1048479. Read Tue, Sep 22, 2026, 5:15 PM UTC.