California earthquakes

M2.5 earthquake 4 km WSW of Cobb, California

A magnitude 2.5 earthquake struck 4 km WSW of Cobb, California on Tue, Oct 30, 1979, 3:19 AM PST (11:19 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M3.0 26 km SE of Covelo, 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
2.5 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1979-10-30 11:19:48 UTC
Depth
1.0 km (0.6 mi), shallow
Epicenter
38.802° N, 122.769° 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 0.1 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.22
Depth from
From location
Station coverage gap
67°
Stations used
24

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 106 in the 60 days after this one and 38 in the 30 days before it.

After

  1. 1.57 km W of Cobb, California · 17138 days ago · 3 km deep · 3 km away
  2. 1.96 km WSW of Cobb, California · 17137 days ago · 0 km deep · 3 km away
  3. 1.78 km SE of Moskowite Corner, California · 17135 days ago · 8 km deep · 72 km away
  4. 1.66 km W of Cobb, California · 17134 days ago · 4 km deep · 3 km away
  5. 2.010 km ESE of Willits, California · 17132 days ago · 2 km deep · 76 km away
  6. 1.918 km ENE of Potter Valley, California · 17132 days ago · 4 km deep · 65 km away
  7. 2.24 km WSW of Cobb, California · 17132 days ago · 4 km deep · 0 km away
  8. 1.94 km WSW of Cobb, California · 17132 days ago · 2 km deep · 0 km away
  9. 2.29 km E of Angwin, California · 17131 days ago · 7 km deep · 46 km away
  10. 2.06 km W of Cobb, California · 17130 days ago · 3 km deep · 3 km away
  11. 2.64 km NW of Anchor Bay, California · 17130 days ago · 4 km deep · 73 km away
  12. 1.76 km ENE of Windsor, California · 17130 days ago · 4 km deep · 25 km away
  13. 1.617 km NE of Nice, California · 17130 days ago · 8 km deep · 49 km away
  14. 1.67 km WSW of Cobb, California · 17129 days ago · 2 km deep · 4 km away
  15. 2.59 km NW of Potter Valley, California · 17125 days ago · 16 km deep · 74 km away
  16. 1.67 km WSW of Cobb, California · 17124 days ago · 0 km deep · 3 km away
  17. 1.97 km W of Cobb, California · 17124 days ago · 1 km deep · 4 km away
  18. 2.06 km W of Cobb, California · 17123 days ago · 3 km deep · 3 km away
  19. 2.49 km SE of Willits, California · 17122 days ago · 8 km deep · 76 km away
  20. 2.1Northern California · 17122 days ago · 2 km deep · 0 km away
  21. 2.07 km N of Cobb, California · 17121 days ago · 1 km deep · 11 km away
  22. 2.85 km WSW of Glen Ellen, California · 17121 days ago · 7 km deep · 54 km away
  23. 1.84 km WSW of Cobb, California · 17120 days ago · 1 km deep · 1 km away
  24. 1.59 km WSW of Cobb, California · 17118 days ago · -1 km deep · 6 km away
  25. 1.73 km ESE of Calpella, California · 17117 days ago · 6 km deep · 58 km away
  26. 1.94 km WSW of Cobb, California · 17116 days ago · 1 km deep · 0 km away
  27. 3.026 km SE of Covelo, California · 17116 days ago · 12 km deep · 93 km away
  28. 3.07 km WSW of Cobb, California · 17115 days ago · 1 km deep · 3 km away
  29. 1.87 km W of Cobb, California · 17113 days ago · 3 km deep · 4 km away
  30. 2.810 km NE of Healdsburg, California · 17112 days ago · 5 km deep · 15 km away
  31. 1.611 km NE of Healdsburg, California · 17112 days ago · 4 km deep · 15 km away
  32. 2.010 km NE of Healdsburg, California · 17112 days ago · 4 km deep · 15 km away
  33. 2.010 km ENE of Clearlake Oaks, California · 17111 days ago · 6 km deep · 35 km away
  34. 2.110 km NE of Healdsburg, California · 17111 days ago · 5 km deep · 15 km away
  35. 1.811 km NE of Healdsburg, California · 17111 days ago · 5 km deep · 15 km away
  36. 1.511 km ENE of Healdsburg, California · 17111 days ago · 0 km deep · 15 km away
  37. 2.011 km NE of Healdsburg, California · 17111 days ago · 5 km deep · 15 km away
  38. 2.26 km W of Cobb, California · 17111 days ago · 3 km deep · 4 km away
  39. 1.95 km NNE of Kenwood, California · 17109 days ago · 9 km deep · 44 km away
  40. 1.88 km WSW of Cobb, California · 17105 days ago · 1 km deep · 4 km away
  41. 1.66 km WSW of Cobb, California · 17105 days ago · 1 km deep · 3 km away
  42. 1.58 km W of Cobb, California · 17104 days ago · 1 km deep · 5 km away
  43. 2.08 km W of Cobb, California · 17104 days ago · 1 km deep · 5 km away
  44. 1.57 km W of Cobb, California · 17104 days ago · 1 km deep · 4 km away
  45. 1.67 km W of Cobb, California · 17104 days ago · 1 km deep · 5 km away
  46. 1.97 km WSW of Cobb, California · 17103 days ago · 0 km deep · 3 km away
  47. 1.58 km WSW of Cobb, California · 17103 days ago · 1 km deep · 4 km away
  48. 1.98 km W of Cobb, California · 17103 days ago · 1 km deep · 5 km away
  49. 1.95 km NW of Redwood Valley, California · 17102 days ago · 7 km deep · 69 km away
  50. 1.87 km W of Cobb, California · 17102 days ago · 0 km deep · 4 km away
  51. 2.06 km W of Cobb, California · 17101 days ago · 1 km deep · 3 km away
  52. 1.96 km W of Cobb, California · 17100 days ago · 1 km deep · 2 km away
  53. 1.69 km WSW of Cobb, California · 17100 days ago · 1 km deep · 6 km away
  54. 1.66 km E of Cloverdale, California · 17100 days ago · 2 km deep · 15 km away
  55. 1.98 km WSW of Cobb, California · 17099 days ago · 1 km deep · 4 km away
  56. 1.86 km WSW of Cobb, California · 17099 days ago · 0 km deep · 2 km away
  57. 1.66 km WSW of Cobb, California · 17098 days ago · 1 km deep · 2 km away
  58. 2.36 km WSW of Cobb, California · 17098 days ago · 1 km deep · 2 km away
  59. 2.36 km WSW of Cobb, California · 17098 days ago · 0 km deep · 2 km away
  60. 1.69 km WSW of Cobb, California · 17098 days ago · 1 km deep · 6 km away

The first 60 of 106.

Before

  1. 1.76 km SW of Napa, California · 17142 days ago · 6 km deep · 72 km away
  2. 1.66 km W of Cobb, California · 17144 days ago · 0 km deep · 2 km away
  3. 1.78 km WSW of Cobb, California · 17144 days ago · 1 km deep · 4 km away
  4. 1.63 km S of Geyserville, California · 17144 days ago · 4 km deep · 18 km away
  5. 1.92 km ESE of Calpella, California · 17144 days ago · 4 km deep · 59 km away
  6. 2.12 km ESE of Calpella, California · 17144 days ago · 5 km deep · 59 km away
  7. 2.32 km ESE of Calpella, California · 17145 days ago · 4 km deep · 59 km away
  8. 1.54 km WSW of Cobb, California · 17145 days ago · 1 km deep · 0 km away
  9. 2.311 km N of Moskowite Corner, California · 17145 days ago · 3 km deep · 58 km away
  10. 1.56 km W of Cobb, California · 17146 days ago · 3 km deep · 3 km away
  11. 1.84 km WSW of Cobb, California · 17148 days ago · 1 km deep · 0 km away
  12. 2.110 km ESE of Hidden Valley Lake, California · 17151 days ago · 6 km deep · 28 km away
  13. 2.34 km WSW of Cobb, California · 17154 days ago · 1 km deep · 0 km away
  14. 1.72 km E of Calpella, California · 17154 days ago · 8 km deep · 60 km away
  15. 1.76 km ENE of Hopland, California · 17155 days ago · 5 km deep · 31 km away
  16. 2.44 km WSW of Cobb, California · 17155 days ago · 4 km deep · 1 km away
  17. 3.09 km N of Green Valley, California · 17156 days ago · 11 km deep · 73 km away
  18. 2.89 km NE of Benicia, California · 17156 days ago · 5 km deep · 96 km away
  19. 1.67 km NNE of Geyserville, California · 17156 days ago · 9 km deep · 10 km away
  20. 1.63 km SW of Clearlake Oaks, California · 17157 days ago · -1 km deep · 23 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1048556. Read Fri, Oct 2, 2026, 1:58 AM UTC.