California earthquakes

M2.0 earthquake 6 km SW of Cobb, California

A magnitude 2.0 earthquake struck 6 km SW of Cobb, California on Thu, May 28, 1987, 1:39 AM PDT (08:39 UTC), -1 km (0 mi) below the surface.

A larger quake followed: M3.3 4 km WNW 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
2.0 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1987-05-28 08:39:13 UTC
Depth
-0.8 km (-0.5 mi), shallow
Epicenter
38.788° N, 122.788° 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 0.5 km horizontally, 1.4 km in depth
Magnitude uncertainty
±0.29
Depth from
From location
Station coverage gap
39°
Stations used
19

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 174 in the 60 days after this one and 109 in the 30 days before it.

After

  1. 2.95 km WSW of Cobb, California · 14371 days ago · -1 km deep · 1 km away
  2. 1.65 km SW of Cobb, California · 14371 days ago · 0 km deep · 1 km away
  3. 1.66 km SW of Cobb, California · 14371 days ago · 1 km deep · 2 km away
  4. 1.716 km NNE of Upper Lake, California · 14371 days ago · 4 km deep · 56 km away
  5. 1.77 km WSW of Cobb, California · 14371 days ago · 4 km deep · 1 km away
  6. 2.44 km WNW of Cobb, California · 14370 days ago · 0 km deep · 5 km away
  7. 2.36 km WSW of Cobb, California · 14370 days ago · 4 km deep · 2 km away
  8. 1.94 km WNW of Cobb, California · 14370 days ago · 0 km deep · 5 km away
  9. 1.75 km SW of Cobb, California · 14370 days ago · 2 km deep · 1 km away
  10. 1.64 km SW of Cobb, California · 14370 days ago · -1 km deep · 2 km away
  11. 2.25 km W of Cobb, California · 14370 days ago · 1 km deep · 5 km away
  12. 3.34 km WNW of Cobb, California · 14369 days ago · 2 km deep · 6 km away
  13. 1.84 km SW of Hopland, California · 14369 days ago · 5 km deep · 37 km away
  14. 1.68 km W of Cobb, California · 14368 days ago · 1 km deep · 5 km away
  15. 1.614 km ENE of Angwin, California · 14368 days ago · -1 km deep · 47 km away
  16. 2.45 km W of Cobb, California · 14368 days ago · 1 km deep · 5 km away
  17. 2.55 km W of Cobb, California · 14368 days ago · 2 km deep · 4 km away
  18. 1.84 km W of Cobb, California · 14368 days ago · 0 km deep · 3 km away
  19. 2.46 km SW of Cobb, California · 14368 days ago · 1 km deep · 1 km away
  20. 2.36 km SW of Cobb, California · 14368 days ago · 2 km deep · 1 km away
  21. 1.86 km SSW of Sutter, California · 14368 days ago · 5 km deep · 95 km away
  22. 1.65 km SW of Cobb, California · 14367 days ago · 2 km deep · 1 km away
  23. 1.56 km SW of Cobb, California · 14367 days ago · 1 km deep · 2 km away
  24. 1.812 km ESE of Comptche, California · 14366 days ago · 6 km deep · 76 km away
  25. 1.66 km W of Cobb, California · 14366 days ago · 3 km deep · 4 km away
  26. 1.66 km WNW of Cobb, California · 14366 days ago · 1 km deep · 6 km away
  27. 1.68 km SE of Willits, California · 14366 days ago · 3 km deep · 77 km away
  28. 2.15 km SW of Cobb, California · 14365 days ago · 1 km deep · 2 km away
  29. 1.94 km W of Cobb, California · 14364 days ago · 0 km deep · 4 km away
  30. 2.08 km W of Cobb, California · 14364 days ago · 1 km deep · 5 km away
  31. 1.86 km W of Glen Ellen, California · 14363 days ago · 2 km deep · 50 km away
  32. 1.817 km ENE of Potter Valley, California · 14363 days ago · 7 km deep · 70 km away
  33. 2.54 km WSW of Cobb, California · 14363 days ago · 1 km deep · 2 km away
  34. 1.86 km W of Cobb, California · 14363 days ago · 1 km deep · 4 km away
  35. 2.27 km WSW of Cobb, California · 14362 days ago · 1 km deep · 2 km away
  36. 1.77 km WSW of Cobb, California · 14362 days ago · 1 km deep · 1 km away
  37. 2.13 km SSE of Calpella, California · 14361 days ago · 1 km deep · 57 km away
  38. 2.06 km WNW of Cobb, California · 14361 days ago · 1 km deep · 5 km away
  39. 2.8Northern California · 14361 days ago · 1 km deep · 4 km away
  40. 2.87 km W of Cobb, California · 14361 days ago · -1 km deep · 4 km away
  41. 1.84 km WSW of Cobb, California · 14360 days ago · 2 km deep · 2 km away
  42. 3.09 km W of Cobb, California · 14360 days ago · 1 km deep · 5 km away
  43. 1.59 km W of Cobb, California · 14360 days ago · 0 km deep · 5 km away
  44. 2.49 km W of Cobb, California · 14360 days ago · 0 km deep · 6 km away
  45. 1.89 km W of Cobb, California · 14360 days ago · 0 km deep · 5 km away
  46. 1.79 km SSE of Sea Ranch, California · 14360 days ago · 1 km deep · 56 km away
  47. 1.95 km WNW of Cobb, California · 14360 days ago · 2 km deep · 6 km away
  48. 1.68 km SSE of Sea Ranch, California · 14360 days ago · 5 km deep · 57 km away
  49. 1.68 km W of Cobb, California · 14360 days ago · 0 km deep · 5 km away
  50. 1.69 km W of Cobb, California · 14359 days ago · 0 km deep · 5 km away
  51. 1.64 km W of Cobb, California · 14359 days ago · 1 km deep · 4 km away
  52. 1.9Northern California · 14358 days ago · 3 km deep · 2 km away
  53. 1.69 km E of Hidden Valley Lake, California · 14358 days ago · 6 km deep · 30 km away
  54. 2.06 km W of Cobb, California · 14357 days ago · 3 km deep · 4 km away
  55. 1.74 km SSW of Cobb, California · 14357 days ago · 4 km deep · 3 km away
  56. 1.59 km W of Cobb, California · 14357 days ago · -1 km deep · 6 km away
  57. 1.77 km WSW of Cobb, California · 14356 days ago · 2 km deep · 2 km away
  58. 1.57 km S of Cobb, California · 14356 days ago · 0 km deep · 8 km away
  59. 3.15 km SW of Cobb, California · 14356 days ago · 1 km deep · 1 km away
  60. 1.95 km SW of Cobb, California · 14356 days ago · 1 km deep · 1 km away

The first 60 of 174.

Before

  1. 3.35 km WSW of Cobb, California · 14371 days ago · 1 km deep · 1 km away
  2. 1.65 km SW of Cobb, California · 14371 days ago · -1 km deep · 1 km away
  3. 1.75 km WSW of Cobb, California · 14371 days ago · 0 km deep · 1 km away
  4. 2.17 km WSW of Cobb, California · 14371 days ago · 1 km deep · 3 km away
  5. 1.75 km WNW of Cobb, California · 14371 days ago · 1 km deep · 5 km away
  6. 1.610 km SE of Sea Ranch, California · 14371 days ago · 4 km deep · 52 km away
  7. 2.67 km W of Cobb, California · 14371 days ago · 1 km deep · 3 km away
  8. 1.63 km W of Cobb, California · 14372 days ago · 0 km deep · 5 km away
  9. 1.65 km W of Cobb, California · 14372 days ago · 2 km deep · 4 km away
  10. 2.07 km W of Cobb, California · 14372 days ago · 1 km deep · 5 km away
  11. 1.511 km N of Brooktrails, California · 14372 days ago · 7 km deep · 99 km away
  12. 1.77 km WSW of Cobb, California · 14372 days ago · 3 km deep · 2 km away
  13. 2.28 km WSW of Cobb, California · 14372 days ago · 2 km deep · 3 km away
  14. 2.07 km W of Cobb, California · 14373 days ago · 1 km deep · 4 km away
  15. 1.56 km WSW of Cobb, California · 14373 days ago · 3 km deep · 2 km away
  16. 1.85 km SW of Cobb, California · 14373 days ago · 4 km deep · 3 km away
  17. 1.75 km SW of Cobb, California · 14373 days ago · 5 km deep · 2 km away
  18. 1.8Northern California · 14373 days ago · 9 km deep · 5 km away
  19. 2.19 km SE of Sea Ranch, California · 14374 days ago · -1 km deep · 54 km away
  20. 1.85 km WSW of Cobb, California · 14374 days ago · 1 km deep · 2 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc101051. Read Thu, Oct 1, 2026, 3:17 AM UTC.