California earthquakes

M2.4 earthquake 7 km W of Cobb, California

A magnitude 2.4 earthquake struck 7 km W of Cobb, California on Thu, Jan 15, 1987, 6:32 AM PST (14:32 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M3.0 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.

Open the live map with earthquakes

The earthquake

Magnitude
2.4 (md), micro
Local time
UTC
1987-01-15 14:32:14 UTC
Depth
3.6 km (2.3 mi), shallow
Epicenter
38.816° N, 122.810° 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
±0.12
Depth from
From location
Station coverage gap
48°
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: 171 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 1.916 km SE of Sea Ranch, California · 14489 days ago · 4 km deep · 53 km away
  2. 1.64 km WSW of Cobb, California · 14489 days ago · 1 km deep · 4 km away
  3. 1.67 km W of Cobb, California · 14488 days ago · 0 km deep · 1 km away
  4. 2.13 km WSW of Green Valley, California · 14488 days ago · 8 km deep · 84 km away
  5. 1.96 km W of Cobb, California · 14488 days ago · -1 km deep · 2 km away
  6. 2.15 km WSW of Cobb, California · 14487 days ago · -1 km deep · 4 km away
  7. 1.98 km W of Cobb, California · 14487 days ago · 1 km deep · 1 km away
  8. 1.86 km W of Cobb, California · 14487 days ago · -1 km deep · 2 km away
  9. 2.27 km WSW of Cobb, California · 14487 days ago · 3 km deep · 3 km away
  10. 2.37 km WSW of Cobb, California · 14486 days ago · 3 km deep · 3 km away
  11. 1.79 km ESE of Hidden Valley Lake, California · 14486 days ago · 7 km deep · 31 km away
  12. 2.35 km W of Cobb, California · 14486 days ago · 1 km deep · 2 km away
  13. 2.17 km ENE of Rohnert Park, California · 14486 days ago · 4 km deep · 52 km away
  14. 2.26 km WNW of Cobb, California · 14485 days ago · -1 km deep · 2 km away
  15. 2.16 km W of Cobb, California · 14485 days ago · 1 km deep · 2 km away
  16. 1.711 km ENE of Cloverdale, California · 14485 days ago · 6 km deep · 9 km away
  17. 1.716 km ENE of Potter Valley, California · 14485 days ago · 7 km deep · 63 km away
  18. 3.06 km WSW of Cobb, California · 14485 days ago · 0 km deep · 1 km away
  19. 1.76 km WSW of Cobb, California · 14485 days ago · 1 km deep · 2 km away
  20. 2.46 km WSW of Cobb, California · 14485 days ago · 3 km deep · 2 km away
  21. 1.67 km WSW of Cobb, California · 14485 days ago · 1 km deep · 1 km away
  22. 1.73 km W of Cobb, California · 14484 days ago · 0 km deep · 4 km away
  23. 2.29 km W of Cobb, California · 14484 days ago · -1 km deep · 2 km away
  24. 1.66 km W of Cobb, California · 14483 days ago · 3 km deep · 2 km away
  25. 2.77 km WSW of Cobb, California · 14483 days ago · 0 km deep · 2 km away
  26. 1.66 km WSW of Cobb, California · 14483 days ago · 0 km deep · 2 km away
  27. 1.53 km SW of Cobb, California · 14483 days ago · 0 km deep · 6 km away
  28. 1.66 km WNW of Cobb, California · 14483 days ago · 0 km deep · 3 km away
  29. 1.86 km W of Cobb, California · 14482 days ago · 3 km deep · 1 km away
  30. 1.86 km W of Cobb, California · 14482 days ago · 1 km deep · 2 km away
  31. 2.15 km SW of Cobb, California · 14482 days ago · 2 km deep · 5 km away
  32. 1.96 km W of Cobb, California · 14482 days ago · 3 km deep · 1 km away
  33. 2.05 km WNW of Cobb, California · 14481 days ago · 1 km deep · 4 km away
  34. 2.4Northern California · 14480 days ago · -1 km deep · 37 km away
  35. 2.05 km SW of Cobb, California · 14479 days ago · 0 km deep · 5 km away
  36. 1.96 km W of Cobb, California · 14478 days ago · 3 km deep · 1 km away
  37. 2.06 km W of Cobb, California · 14477 days ago · 0 km deep · 1 km away
  38. 1.75 km W of Cobb, California · 14477 days ago · 1 km deep · 2 km away
  39. 1.56 km WSW of Cobb, California · 14476 days ago · 4 km deep · 1 km away
  40. 1.85 km WNW of Cobb, California · 14476 days ago · 2 km deep · 4 km away
  41. 1.87 km W of Cobb, California · 14476 days ago · 0 km deep · 2 km away
  42. 1.54 km W of Cobb, California · 14475 days ago · -1 km deep · 3 km away
  43. 1.99 km W of Cobb, California · 14475 days ago · 4 km deep · 2 km away
  44. 2.09 km W of Cobb, California · 14474 days ago · 0 km deep · 2 km away
  45. 2.09 km W of Cobb, California · 14474 days ago · -1 km deep · 2 km away
  46. 1.66 km W of Cobb, California · 14474 days ago · 3 km deep · 2 km away
  47. 2.011 km NE of Talmage, California · 14473 days ago · 7 km deep · 48 km away
  48. 1.65 km W of Cobb, California · 14473 days ago · 0 km deep · 2 km away
  49. 1.65 km SW of Cobb, California · 14472 days ago · 1 km deep · 5 km away
  50. 1.7Northern California · 14471 days ago · 0 km deep · 3 km away
  51. 2.06 km W of Cobb, California · 14470 days ago · 3 km deep · 1 km away
  52. 1.918 km E of Sea Ranch, California · 14470 days ago · 0 km deep · 39 km away
  53. 1.67 km W of Cobb, California · 14469 days ago · 3 km deep · 1 km away
  54. 1.88 km W of Cobb, California · 14469 days ago · 0 km deep · 1 km away
  55. 1.98 km W of Cobb, California · 14469 days ago · 1 km deep · 1 km away
  56. 2.46 km E of Hopland, California · 14469 days ago · 7 km deep · 27 km away
  57. 1.67 km WSW of Cobb, California · 14468 days ago · 1 km deep · 2 km away
  58. 1.97 km WSW of Cobb, California · 14468 days ago · 1 km deep · 2 km away
  59. 1.66 km WNW of Cobb, California · 14468 days ago · -1 km deep · 3 km away
  60. 1.88 km WNW of Cobb, California · 14467 days ago · -1 km deep · 4 km away

The first 60 of 171.

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc92600. Read Tue, Sep 22, 2026, 9:15 AM UTC.