California earthquakes

M2.4 earthquake 6 km WSW of Cobb, California

A magnitude 2.4 earthquake struck 6 km WSW of Cobb, California on Sun, Nov 19, 1978, 5:56 AM PST (13:56 UTC), 3 km (2 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
2.4 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1978-11-19 13:56:26 UTC
Depth
3.3 km (2.0 mi), shallow
Epicenter
38.810° N, 122.798° 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
±0.16
Depth from
From location
Station coverage gap
40°
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: 71 in the 60 days after this one and 37 in the 30 days before it.

After

  1. 1.82 km SE of Calpella, California · 17482 days ago · 2 km deep · 56 km away
  2. 1.83 km SE of Calpella, California · 17482 days ago · 3 km deep · 56 km away
  3. 1.610 km W of Cobb, California · 17480 days ago · 0 km deep · 4 km away
  4. 2.19 km SE of Willits, California · 17480 days ago · 9 km deep · 73 km away
  5. 3.37 km NNW of Redwood Valley, California · 17480 days ago · 13 km deep · 69 km away
  6. 1.57 km WSW of Cobb, California · 17479 days ago · 4 km deep · 1 km away
  7. 1.56 km W of Cobb, California · 17479 days ago · 4 km deep · 0 km away
  8. 1.98 km W of Cobb, California · 17477 days ago · 1 km deep · 2 km away
  9. 2.28 km W of Cobb, California · 17477 days ago · 0 km deep · 2 km away
  10. 1.68 km W of Cobb, California · 17477 days ago · 0 km deep · 2 km away
  11. 1.810 km SE of Willits, California · 17476 days ago · 10 km deep · 72 km away
  12. 2.0near the coast of Northern California · 17475 days ago · 4 km deep · 55 km away
  13. 1.78 km W of Cobb, California · 17475 days ago · 1 km deep · 1 km away
  14. 2.17 km W of Cobb, California · 17474 days ago · 1 km deep · 2 km away
  15. 2.113 km ESE of Hidden Valley Lake, California · 17472 days ago · 8 km deep · 34 km away
  16. 2.610 km NNE of Brooktrails, California · 17472 days ago · 8 km deep · 92 km away
  17. 2.212 km ESE of Hidden Valley Lake, California · 17471 days ago · 10 km deep · 32 km away
  18. 1.96 km ESE of Hopland, California · 17471 days ago · 4 km deep · 26 km away
  19. 1.817 km ENE of Potter Valley, California · 17471 days ago · 5 km deep · 63 km away
  20. 2.26 km W of Cobb, California · 17469 days ago · 3 km deep · 1 km away
  21. 1.74 km WNW of Redwood Valley, California · 17469 days ago · 7 km deep · 65 km away
  22. 1.76 km NE of Rohnert Park, California · 17468 days ago · 8 km deep · 48 km away
  23. 1.76 km WSW of Cobb, California · 17468 days ago · 0 km deep · 0 km away
  24. 2.57 km W of Cobb, California · 17467 days ago · 3 km deep · 1 km away
  25. 2.57 km W of Cobb, California · 17467 days ago · 3 km deep · 1 km away
  26. 1.69 km W of Cobb, California · 17467 days ago · 0 km deep · 3 km away
  27. 2.39 km WSW of Cobb, California · 17467 days ago · 1 km deep · 3 km away
  28. 1.56 km W of Cobb, California · 17464 days ago · 3 km deep · 1 km away
  29. 2.112 km ESE of Hidden Valley Lake, California · 17464 days ago · 8 km deep · 32 km away
  30. 1.512 km ESE of Hidden Valley Lake, California · 17464 days ago · 8 km deep · 32 km away
  31. 1.811 km ESE of Willits, California · 17464 days ago · 4 km deep · 73 km away
  32. 1.64 km E of Saint Helena, California · 17464 days ago · 5 km deep · 47 km away
  33. 1.96 km W of Cobb, California · 17463 days ago · 0 km deep · 2 km away
  34. 3.46 km WSW of Cobb, California · 17463 days ago · 0 km deep · 1 km away
  35. 1.7Northern California · 17463 days ago · 18 km deep · 19 km away
  36. 2.0Northern California · 17462 days ago · 8 km deep · 32 km away
  37. 1.77 km W of Cobb, California · 17462 days ago · -1 km deep · 2 km away
  38. 2.110 km SE of Sonoma, California · 17461 days ago · 7 km deep · 75 km away
  39. 1.810 km SE of Hopland, California · 17459 days ago · 2 km deep · 23 km away
  40. 1.912 km ESE of Hidden Valley Lake, California · 17459 days ago · 8 km deep · 32 km away
  41. 3.26 km W of Cobb, California · 17457 days ago · 4 km deep · 1 km away
  42. 1.56 km W of Cobb, California · 17457 days ago · 3 km deep · 1 km away
  43. 1.611 km ESE of Willits, California · 17457 days ago · 4 km deep · 73 km away
  44. 2.33 km SE of Calpella, California · 17454 days ago · 6 km deep · 56 km away
  45. 1.75 km W of Cobb, California · 17453 days ago · 0 km deep · 2 km away
  46. 1.67 km WSW of Cobb, California · 17453 days ago · 1 km deep · 1 km away
  47. 2.411 km ESE of Hidden Valley Lake, California · 17452 days ago · 10 km deep · 32 km away
  48. 1.99 km ENE of Brooktrails, California · 17450 days ago · 9 km deep · 85 km away
  49. 2.519 km NNE of Upper Lake, California · 17450 days ago · 7 km deep · 56 km away
  50. 1.917 km SW of Hopland, California · 17449 days ago · 1 km deep · 41 km away
  51. 1.98 km WSW of Cobb, California · 17449 days ago · 1 km deep · 2 km away
  52. 1.610 km ESE of Hidden Valley Lake, California · 17448 days ago · 6 km deep · 30 km away
  53. 1.68 km WSW of Cobb, California · 17447 days ago · 1 km deep · 2 km away
  54. 2.16 km E of Willits, California · 17447 days ago · 1 km deep · 80 km away
  55. 1.67 km WSW of Cobb, California · 17446 days ago · 2 km deep · 1 km away
  56. 1.76 km W of Cobb, California · 17445 days ago · 1 km deep · 2 km away
  57. 2.010 km SSE of Willits, California · 17443 days ago · 4 km deep · 72 km away
  58. 1.95 km ESE of Black Point-Green Point, California · 17443 days ago · 5 km deep · 84 km away
  59. 1.98 km WSW of Cobb, California · 17443 days ago · 1 km deep · 2 km away
  60. 1.96 km W of Cobb, California · 17443 days ago · 3 km deep · 1 km away

The first 60 of 71.

Before

  1. 2.112 km SSW of Dillon Beach, California · 17484 days ago · 2 km deep · 76 km away
  2. 1.85 km SSW of Saint Helena, California · 17485 days ago · 5 km deep · 47 km away
  3. 1.66 km W of Cobb, California · 17487 days ago · 3 km deep · 1 km away
  4. 1.65 km W of Cobb, California · 17489 days ago · 1 km deep · 2 km away
  5. 1.725 km NE of Potter Valley, California · 17489 days ago · 13 km deep · 78 km away
  6. 2.425 km NE of Potter Valley, California · 17490 days ago · 13 km deep · 79 km away
  7. 1.827 km NE of Potter Valley, California · 17490 days ago · 15 km deep · 80 km away
  8. 2.024 km NE of Potter Valley, California · 17490 days ago · 11 km deep · 77 km away
  9. 2.119 km NE of Potter Valley, California · 17490 days ago · 4 km deep · 74 km away
  10. 3.824 km NE of Potter Valley, California · 17490 days ago · 18 km deep · 78 km away
  11. 1.66 km W of Cobb, California · 17491 days ago · 3 km deep · 1 km away
  12. 1.77 km W of Cobb, California · 17491 days ago · 4 km deep · 1 km away
  13. 2.38 km WSW of Cobb, California · 17492 days ago · 4 km deep · 2 km away
  14. 2.14 km SW of Clearlake, California · 17492 days ago · 0 km deep · 18 km away
  15. 2.34 km SW of Clearlake, California · 17493 days ago · 2 km deep · 18 km away
  16. 1.57 km WSW of Cobb, California · 17494 days ago · 1 km deep · 1 km away
  17. 2.326 km NE of Potter Valley, California · 17495 days ago · 14 km deep · 80 km away
  18. 1.89 km E of Willits, California · 17495 days ago · 8 km deep · 75 km away
  19. 2.610 km NNW of Potter Valley, California · 17496 days ago · 3 km deep · 74 km away
  20. 2.411 km NNW of Potter Valley, California · 17496 days ago · 4 km deep · 74 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1043429. Read Thu, Oct 1, 2026, 12:34 PM UTC.