California earthquakes

M2.8 earthquake 4 km WSW of Cobb, California

A magnitude 2.8 earthquake struck 4 km WSW of Cobb, California on Mon, Nov 29, 1976, 8:16 AM PST (16:16 UTC), 4 km (3 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.

Open the live map with earthquakes

The earthquake

Magnitude
2.8 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1976-11-29 16:16:22 UTC
Depth
4.1 km (2.6 mi), shallow
Epicenter
38.814° N, 122.774° 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
±0.56
Depth from
From location
Station coverage gap
46°
Stations used
26

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 112 in the 60 days after this one and 48 in the 30 days before it.

After

  1. 1.67 km W of Cobb, California · 18204 days ago · 3 km deep · 3 km away
  2. 1.54 km E of Soda Bay, California · 18204 days ago · -1 km deep · 21 km away
  3. 1.56 km WSW of Cobb, California · 18204 days ago · -1 km deep · 2 km away
  4. 1.74 km E of Soda Bay, California · 18204 days ago · -1 km deep · 21 km away
  5. 2.36 km W of Cobb, California · 18202 days ago · 3 km deep · 2 km away
  6. 2.00 km ENE of Larkfield-Wikiup, California · 18202 days ago · 3 km deep · 33 km away
  7. 2.911 km N of Potter Valley, California · 18202 days ago · 1 km deep · 74 km away
  8. 2.03 km NNE of Potter Valley, California · 18202 days ago · -1 km deep · 66 km away
  9. 1.65 km NNE of Clearlake, California · 18201 days ago · 2 km deep · 26 km away
  10. 1.95 km SW of Philo, California · 18201 days ago · 0 km deep · 67 km away
  11. 2.06 km N of Cobb, California · 18201 days ago · 1 km deep · 9 km away
  12. 1.88 km W of Cobb, California · 18200 days ago · 0 km deep · 3 km away
  13. 2.47 km WSW of Cobb, California · 18200 days ago · 2 km deep · 3 km away
  14. 1.64 km E of Lucerne, California · 18200 days ago · 5 km deep · 31 km away
  15. 1.86 km W of Cobb, California · 18198 days ago · 0 km deep · 2 km away
  16. 1.56 km SSE of Clear Lake Riviera, California · 18197 days ago · 4 km deep · 13 km away
  17. 2.06 km W of Lower Lake, California · 18197 days ago · 4 km deep · 13 km away
  18. 1.64 km W of Cobb, California · 18197 days ago · 3 km deep · 2 km away
  19. 2.24 km WSW of Lower Lake, California · 18197 days ago · 3 km deep · 14 km away
  20. 2.09 km NE of Healdsburg, California · 18197 days ago · 7 km deep · 16 km away
  21. 1.55 km WSW of Cobb, California · 18195 days ago · 0 km deep · 1 km away
  22. 2.50 km W of Larkfield-Wikiup, California · 18194 days ago · 6 km deep · 33 km away
  23. 2.06 km W of Cobb, California · 18193 days ago · 3 km deep · 2 km away
  24. 2.56 km W of Cobb, California · 18191 days ago · 3 km deep · 2 km away
  25. 1.86 km W of Cobb, California · 18191 days ago · 4 km deep · 2 km away
  26. 1.87 km W of Cobb, California · 18191 days ago · 2 km deep · 3 km away
  27. 2.06 km WSW of Cobb, California · 18191 days ago · 3 km deep · 2 km away
  28. 1.919 km W of Stonyford, California · 18190 days ago · 0 km deep · 64 km away
  29. 1.812 km NNE of Upper Lake, California · 18190 days ago · 7 km deep · 51 km away
  30. 2.218 km NE of Potter Valley, California · 18187 days ago · 7 km deep · 69 km away
  31. 2.15 km WSW of Cobb, California · 18187 days ago · 0 km deep · 1 km away
  32. 1.82 km SSE of Talmage, California · 18186 days ago · 5 km deep · 47 km away
  33. 3.25 km WSW of Cobb, California · 18186 days ago · 0 km deep · 1 km away
  34. 2.06 km W of Cobb, California · 18186 days ago · 3 km deep · 2 km away
  35. 2.85 km WSW of Cobb, California · 18186 days ago · 0 km deep · 1 km away
  36. 2.010 km ESE of Hidden Valley Lake, California · 18186 days ago · 5 km deep · 29 km away
  37. 2.46 km WSW of Cobb, California · 18186 days ago · 0 km deep · 2 km away
  38. 1.85 km WSW of Cobb, California · 18186 days ago · 0 km deep · 1 km away
  39. 1.77 km W of Cobb, California · 18185 days ago · 3 km deep · 3 km away
  40. 1.93 km S of Geyserville, California · 18184 days ago · 7 km deep · 18 km away
  41. 1.79 km ESE of Hidden Valley Lake, California · 18184 days ago · -1 km deep · 28 km away
  42. 1.65 km W of Cobb, California · 18184 days ago · 1 km deep · 2 km away
  43. 1.911 km ESE of Hidden Valley Lake, California · 18184 days ago · -1 km deep · 30 km away
  44. 2.28 km ESE of Hidden Valley Lake, California · 18183 days ago · -1 km deep · 27 km away
  45. 3.5Northern California · 18182 days ago · 1 km deep · 2 km away
  46. 1.96 km W of Cobb, California · 18182 days ago · 0 km deep · 3 km away
  47. 1.86 km W of Cobb, California · 18182 days ago · 0 km deep · 2 km away
  48. 2.1Northern California · 18182 days ago · 9 km deep · 31 km away
  49. 1.510 km W of Cobb, California · 18181 days ago · 1 km deep · 6 km away
  50. 2.76 km W of Cobb, California · 18181 days ago · 3 km deep · 2 km away
  51. 1.6Northern California · 18181 days ago · 3 km deep · 2 km away
  52. 3.48 km WSW of Cobb, California · 18181 days ago · 4 km deep · 4 km away
  53. 2.96 km W of Cobb, California · 18180 days ago · 4 km deep · 2 km away
  54. 2.218 km NE of Nice, California · 18178 days ago · 3 km deep · 49 km away
  55. 1.816 km SW of Stonyford, California · 18178 days ago · 1 km deep · 53 km away
  56. 1.90 km NNE of Larkfield-Wikiup, California · 18177 days ago · 4 km deep · 33 km away
  57. 2.59 km W of Cobb, California · 18177 days ago · 0 km deep · 5 km away
  58. 1.8Northern California · 18175 days ago · 0 km deep · 5 km away
  59. 1.67 km SW of Calistoga, California · 18175 days ago · 5 km deep · 34 km away
  60. 2.46 km NNE of Penngrove, California · 18174 days ago · 7 km deep · 53 km away

The first 60 of 112.

Before

  1. 2.011 km NE of Healdsburg, California · 18205 days ago · 6 km deep · 16 km away
  2. 2.27 km W of Cobb, California · 18206 days ago · 4 km deep · 3 km away
  3. 2.06 km WSW of Cobb, California · 18206 days ago · 4 km deep · 2 km away
  4. 2.112 km ENE of Clearlake, California · 18206 days ago · 17 km deep · 32 km away
  5. 2.411 km NE of Upper Lake, California · 18206 days ago · 8 km deep · 46 km away
  6. 1.58 km WSW of Cobb, California · 18207 days ago · 4 km deep · 4 km away
  7. 1.92 km ESE of Boonville, California · 18208 days ago · 5 km deep · 53 km away
  8. 2.117 km NE of Nice, California · 18209 days ago · 7 km deep · 48 km away
  9. 1.811 km NE of Nice, California · 18209 days ago · 8 km deep · 42 km away
  10. 2.218 km WSW of Lodoga, California · 18209 days ago · 8 km deep · 49 km away
  11. 2.214 km NE of Nice, California · 18209 days ago · 9 km deep · 44 km away
  12. 2.117 km NE of Nice, California · 18209 days ago · 9 km deep · 47 km away
  13. 1.616 km NE of Nice, California · 18209 days ago · 3 km deep · 47 km away
  14. 1.96 km NNE of Lucerne, California · 18209 days ago · 5 km deep · 37 km away
  15. 2.74 km W of Stonyford, California · 18209 days ago · 14 km deep · 65 km away
  16. 2.27 km SW of Stonyford, California · 18209 days ago · 7 km deep · 59 km away
  17. 2.215 km NE of Nice, California · 18209 days ago · 8 km deep · 46 km away
  18. 2.317 km NE of Nice, California · 18209 days ago · 9 km deep · 47 km away
  19. 2.516 km NE of Nice, California · 18209 days ago · 11 km deep · 47 km away
  20. 2.515 km NE of Nice, California · 18209 days ago · 8 km deep · 45 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1032541. Read Fri, Oct 2, 2026, 10:49 PM UTC.