California earthquakes

M2.5 earthquake 6 km W of Cobb, California

A magnitude 2.5 earthquake struck 6 km W of Cobb, California on Mon, Nov 15, 1976, 1:21 AM PST (09:21 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.5 Northern 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
1976-11-15 09:21:41 UTC
Depth
3.5 km (2.2 mi), shallow
Epicenter
38.822° N, 122.801° 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
±0.31
Depth from
From location
Station coverage gap
41°
Stations used
25

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 118 in the 60 days after this one and 34 in the 30 days before it.

After

  1. 1.97 km WSW of Cobb, California · 18218 days ago · 2 km deep · 2 km away
  2. 1.66 km WSW of Cobb, California · 18217 days ago · 3 km deep · 1 km away
  3. 2.26 km W of Cobb, California · 18216 days ago · 3 km deep · 1 km away
  4. 1.87 km W of Cobb, California · 18211 days ago · 3 km deep · 1 km away
  5. 1.98 km W of Cobb, California · 18211 days ago · 0 km deep · 2 km away
  6. 1.84 km WSW of Cobb, California · 18210 days ago · 2 km deep · 3 km away
  7. 2.515 km NE of Nice, California · 18210 days ago · 8 km deep · 45 km away
  8. 2.516 km NE of Nice, California · 18210 days ago · 11 km deep · 46 km away
  9. 2.317 km NE of Nice, California · 18210 days ago · 9 km deep · 46 km away
  10. 2.215 km NE of Nice, California · 18210 days ago · 8 km deep · 45 km away
  11. 2.27 km SW of Stonyford, California · 18210 days ago · 7 km deep · 59 km away
  12. 2.74 km W of Stonyford, California · 18210 days ago · 14 km deep · 65 km away
  13. 1.96 km NNE of Lucerne, California · 18210 days ago · 5 km deep · 36 km away
  14. 1.616 km NE of Nice, California · 18210 days ago · 3 km deep · 46 km away
  15. 2.117 km NE of Nice, California · 18210 days ago · 9 km deep · 46 km away
  16. 2.214 km NE of Nice, California · 18210 days ago · 9 km deep · 44 km away
  17. 2.218 km WSW of Lodoga, California · 18210 days ago · 8 km deep · 49 km away
  18. 1.811 km NE of Nice, California · 18210 days ago · 8 km deep · 41 km away
  19. 2.117 km NE of Nice, California · 18210 days ago · 7 km deep · 47 km away
  20. 1.92 km ESE of Boonville, California · 18209 days ago · 5 km deep · 51 km away
  21. 1.58 km WSW of Cobb, California · 18207 days ago · 4 km deep · 3 km away
  22. 2.411 km NE of Upper Lake, California · 18207 days ago · 8 km deep · 45 km away
  23. 2.112 km ENE of Clearlake, California · 18207 days ago · 17 km deep · 33 km away
  24. 2.06 km WSW of Cobb, California · 18206 days ago · 4 km deep · 2 km away
  25. 2.27 km W of Cobb, California · 18206 days ago · 4 km deep · 1 km away
  26. 2.011 km NE of Healdsburg, California · 18205 days ago · 6 km deep · 17 km away
  27. 2.84 km WSW of Cobb, California · 18205 days ago · 4 km deep · 3 km away
  28. 1.67 km W of Cobb, California · 18205 days ago · 3 km deep · 1 km away
  29. 1.54 km E of Soda Bay, California · 18204 days ago · -1 km deep · 21 km away
  30. 1.56 km WSW of Cobb, California · 18204 days ago · -1 km deep · 2 km away
  31. 1.74 km E of Soda Bay, California · 18204 days ago · -1 km deep · 20 km away
  32. 2.36 km W of Cobb, California · 18202 days ago · 3 km deep · 0 km away
  33. 2.00 km ENE of Larkfield-Wikiup, California · 18202 days ago · 3 km deep · 35 km away
  34. 2.911 km N of Potter Valley, California · 18202 days ago · 1 km deep · 72 km away
  35. 2.03 km NNE of Potter Valley, California · 18202 days ago · -1 km deep · 64 km away
  36. 1.65 km NNE of Clearlake, California · 18201 days ago · 2 km deep · 27 km away
  37. 1.95 km SW of Philo, California · 18201 days ago · 0 km deep · 64 km away
  38. 2.06 km N of Cobb, California · 18201 days ago · 1 km deep · 10 km away
  39. 1.88 km W of Cobb, California · 18201 days ago · 0 km deep · 2 km away
  40. 2.47 km WSW of Cobb, California · 18200 days ago · 2 km deep · 2 km away
  41. 1.64 km E of Lucerne, California · 18200 days ago · 5 km deep · 31 km away
  42. 1.86 km W of Cobb, California · 18198 days ago · 0 km deep · 1 km away
  43. 1.56 km SSE of Clear Lake Riviera, California · 18198 days ago · 4 km deep · 14 km away
  44. 2.06 km W of Lower Lake, California · 18198 days ago · 4 km deep · 14 km away
  45. 1.64 km W of Cobb, California · 18198 days ago · 3 km deep · 2 km away
  46. 2.24 km WSW of Lower Lake, California · 18198 days ago · 3 km deep · 15 km away
  47. 2.09 km NE of Healdsburg, California · 18197 days ago · 7 km deep · 17 km away
  48. 1.55 km WSW of Cobb, California · 18196 days ago · 0 km deep · 2 km away
  49. 2.50 km W of Larkfield-Wikiup, California · 18194 days ago · 6 km deep · 35 km away
  50. 2.06 km W of Cobb, California · 18193 days ago · 3 km deep · 0 km away
  51. 2.56 km W of Cobb, California · 18191 days ago · 3 km deep · 1 km away
  52. 1.86 km W of Cobb, California · 18191 days ago · 4 km deep · 1 km away
  53. 1.87 km W of Cobb, California · 18191 days ago · 2 km deep · 0 km away
  54. 2.06 km WSW of Cobb, California · 18191 days ago · 3 km deep · 2 km away
  55. 1.919 km W of Stonyford, California · 18191 days ago · 0 km deep · 63 km away
  56. 1.812 km NNE of Upper Lake, California · 18191 days ago · 7 km deep · 50 km away
  57. 2.218 km NE of Potter Valley, California · 18187 days ago · 7 km deep · 68 km away
  58. 2.15 km WSW of Cobb, California · 18187 days ago · 0 km deep · 2 km away
  59. 1.82 km SSE of Talmage, California · 18187 days ago · 5 km deep · 45 km away
  60. 3.25 km WSW of Cobb, California · 18186 days ago · 0 km deep · 2 km away

The first 60 of 118.

Before

  1. 2.123 km W of Stonyford, California · 18219 days ago · 1 km deep · 60 km away
  2. 2.521 km W of Stonyford, California · 18220 days ago · 14 km deep · 63 km away
  3. 1.94 km WSW of Cobb, California · 18220 days ago · 1 km deep · 3 km away
  4. 2.01 km ESE of Clear Lake Riviera, California · 18221 days ago · 1 km deep · 16 km away
  5. 1.62 km WSW of Clearlake, California · 18221 days ago · 5 km deep · 19 km away
  6. 2.01 km W of Clearlake, California · 18221 days ago · 0 km deep · 20 km away
  7. 1.76 km W of Cobb, California · 18221 days ago · 3 km deep · 1 km away
  8. 1.73 km N of Windsor, California · 18222 days ago · 6 km deep · 27 km away
  9. 2.214 km ESE of Hidden Valley Lake, California · 18222 days ago · 6 km deep · 35 km away
  10. 2.015 km ESE of Hidden Valley Lake, California · 18222 days ago · 6 km deep · 35 km away
  11. 2.515 km SE of Hidden Valley Lake, California · 18222 days ago · 4 km deep · 35 km away
  12. 3.07 km ESE of Willits, California · 18223 days ago · 11 km deep · 74 km away
  13. 2.45 km SW of Kenwood, California · 18225 days ago · 7 km deep · 52 km away
  14. 2.57 km W of Cobb, California · 18226 days ago · 3 km deep · 1 km away
  15. 1.58 km W of Cobb, California · 18228 days ago · -1 km deep · 2 km away
  16. 1.910 km E of Hidden Valley Lake, California · 18229 days ago · 10 km deep · 31 km away
  17. 1.84 km NW of Clearlake, California · 18229 days ago · 1 km deep · 22 km away
  18. 1.99 km WNW of Cobb, California · 18232 days ago · 3 km deep · 5 km away
  19. 2.16 km WSW of Cobb, California · 18232 days ago · 1 km deep · 1 km away
  20. 1.97 km WSW of Cobb, California · 18233 days ago · 4 km deep · 2 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1032294. Read Sat, Oct 3, 2026, 6:21 AM UTC.