California earthquakes

M1.9 earthquake 5 km W of Cobb, California

A magnitude 1.9 earthquake struck 5 km W of Cobb, California on Mon, Jun 15, 1987, 9:28 AM PDT (16:28 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M3.2 23 km NE of Potter Valley, 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
1.9 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1987-06-15 16:28:17 UTC
Depth
-0.1 km (-0.1 mi), shallow
Epicenter
38.829° N, 122.791° 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, 0.7 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
43°
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 172 in the 60 days after this one and 130 in the 30 days before it.

After

  1. 2.26 km W of Cobb, California · 14356 days ago · 0 km deep · 0 km away
  2. 1.64 km SW of Cobb, California · 14356 days ago · 4 km deep · 5 km away
  3. 2.45 km N of Port Costa, California · 14355 days ago · 10 km deep · 98 km away
  4. 2.06 km W of Cobb, California · 14355 days ago · 2 km deep · 1 km away
  5. 1.94 km NW of Potter Valley, California · 14353 days ago · 4 km deep · 65 km away
  6. 2.38 km W of Cobb, California · 14353 days ago · -1 km deep · 3 km away
  7. 1.84 km WSW of Cobb, California · 14353 days ago · 1 km deep · 3 km away
  8. 2.57 km W of Cobb, California · 14352 days ago · 4 km deep · 2 km away
  9. 2.27 km WSW of Cobb, California · 14352 days ago · 3 km deep · 3 km away
  10. 2.04 km W of Cobb, California · 14352 days ago · -1 km deep · 2 km away
  11. 1.6Northern California · 14352 days ago · 1 km deep · 1 km away
  12. 2.017 km NNE of Angwin, California · 14351 days ago · 9 km deep · 38 km away
  13. 1.77 km W of Cobb, California · 14351 days ago · 3 km deep · 2 km away
  14. 1.87 km W of Cobb, California · 14351 days ago · 2 km deep · 3 km away
  15. 1.65 km WNW of Cobb, California · 14351 days ago · 1 km deep · 1 km away
  16. 1.95 km W of Cobb, California · 14351 days ago · 0 km deep · 1 km away
  17. 1.65 km WNW of Cobb, California · 14351 days ago · 1 km deep · 1 km away
  18. 2.15 km SSW of Cobb, California · 14351 days ago · 0 km deep · 6 km away
  19. 1.66 km W of Cobb, California · 14351 days ago · 3 km deep · 1 km away
  20. 1.66 km W of Cobb, California · 14351 days ago · 2 km deep · 1 km away
  21. 1.64 km W of Cobb, California · 14351 days ago · 1 km deep · 1 km away
  22. 2.03 km SW of Moskowite Corner, California · 14351 days ago · 8 km deep · 66 km away
  23. 1.521 km ENE of Potter Valley, California · 14349 days ago · 9 km deep · 60 km away
  24. 2.19 km WSW of Cobb, California · 14349 days ago · 1 km deep · 5 km away
  25. 1.85 km WSW of Cobb, California · 14349 days ago · 0 km deep · 4 km away
  26. 1.82 km N of Cloverdale, California · 14349 days ago · 0 km deep · 20 km away
  27. 1.94 km WSW of Cobb, California · 14348 days ago · 5 km deep · 4 km away
  28. 1.88 km WSW of Cobb, California · 14348 days ago · -1 km deep · 4 km away
  29. 1.85 km SSW of Cobb, California · 14348 days ago · 1 km deep · 7 km away
  30. 1.86 km SW of Cobb, California · 14348 days ago · 1 km deep · 4 km away
  31. 1.610 km SE of Boonville, California · 14348 days ago · 2 km deep · 45 km away
  32. 1.810 km SE of Boonville, California · 14348 days ago · 1 km deep · 44 km away
  33. 2.15 km W of Cobb, California · 14347 days ago · 1 km deep · 1 km away
  34. 1.73 km ENE of Calpella, California · 14347 days ago · 2 km deep · 56 km away
  35. 1.54 km ENE of Calpella, California · 14347 days ago · 5 km deep · 56 km away
  36. 2.2near the coast of Northern California · 14347 days ago · 2 km deep · 56 km away
  37. 1.54 km ENE of Calpella, California · 14347 days ago · 5 km deep · 56 km away
  38. 1.54 km WSW of Cobb, California · 14347 days ago · 2 km deep · 4 km away
  39. 1.53 km N of Cloverdale, California · 14347 days ago · 0 km deep · 20 km away
  40. 1.67 km E of Willits, California · 14346 days ago · 8 km deep · 77 km away
  41. 1.55 km SW of Cobb, California · 14346 days ago · 0 km deep · 6 km away
  42. 1.65 km WSW of Cobb, California · 14346 days ago · 1 km deep · 4 km away
  43. 1.84 km WSW of Cobb, California · 14346 days ago · 1 km deep · 3 km away
  44. 1.68 km W of Cobb, California · 14345 days ago · 1 km deep · 3 km away
  45. 1.68 km NW of Redwood Valley, California · 14345 days ago · 3 km deep · 69 km away
  46. 1.66 km WSW of Cobb, California · 14345 days ago · 3 km deep · 3 km away
  47. 2.46 km WNW of Cobb, California · 14345 days ago · 0 km deep · 1 km away
  48. 2.87 km WNW of Cobb, California · 14345 days ago · -1 km deep · 1 km away
  49. 1.66 km W of Cobb, California · 14345 days ago · 3 km deep · 1 km away
  50. 1.55 km W of Cobb, California · 14344 days ago · 1 km deep · 1 km away
  51. 1.86 km W of Cobb, California · 14344 days ago · 3 km deep · 2 km away
  52. 2.24 km WSW of Cobb, California · 14343 days ago · 0 km deep · 4 km away
  53. 1.94 km W of Cobb, California · 14343 days ago · 0 km deep · 1 km away
  54. 2.05 km W of Cobb, California · 14343 days ago · -1 km deep · 1 km away
  55. 1.66 km WSW of Cobb, California · 14343 days ago · 0 km deep · 3 km away
  56. 1.66 km W of Cobb, California · 14343 days ago · 3 km deep · 1 km away
  57. 2.55 km SW of Cobb, California · 14342 days ago · 2 km deep · 4 km away
  58. 2.35 km WSW of Cobb, California · 14342 days ago · 3 km deep · 2 km away
  59. 3.223 km NE of Potter Valley, California · 14341 days ago · 9 km deep · 75 km away
  60. 1.59 km SSE of Boonville, California · 14341 days ago · 3 km deep · 47 km away

The first 60 of 172.

Before

  1. 1.714 km SE of Hidden Valley Lake, California · 14356 days ago · -1 km deep · 34 km away
  2. 2.07 km WSW of Cobb, California · 14356 days ago · 1 km deep · 3 km away
  3. 1.87 km W of Cobb, California · 14357 days ago · 1 km deep · 1 km away
  4. 3.26 km W of Cobb, California · 14357 days ago · 3 km deep · 1 km away
  5. 1.75 km SSW of Cobb, California · 14357 days ago · -1 km deep · 7 km away
  6. 2.57 km WSW of Cobb, California · 14358 days ago · 2 km deep · 3 km away
  7. 1.93 km NNE of Windsor, California · 14358 days ago · 2 km deep · 28 km away
  8. 1.64 km W of Cobb, California · 14358 days ago · 1 km deep · 2 km away
  9. 2.35 km SW of Cobb, California · 14358 days ago · -1 km deep · 5 km away
  10. 1.73 km NNW of Cobb, California · 14359 days ago · 2 km deep · 6 km away
  11. 2.0Northern California · 14359 days ago · 1 km deep · 2 km away
  12. 1.98 km W of Cobb, California · 14359 days ago · 1 km deep · 3 km away
  13. 2.38 km W of Cobb, California · 14359 days ago · 2 km deep · 2 km away
  14. 2.38 km W of Cobb, California · 14359 days ago · 1 km deep · 2 km away
  15. 1.65 km SW of Cobb, California · 14360 days ago · 0 km deep · 6 km away
  16. 1.95 km SW of Cobb, California · 14360 days ago · 1 km deep · 5 km away
  17. 3.15 km SW of Cobb, California · 14360 days ago · 1 km deep · 5 km away
  18. 1.57 km S of Cobb, California · 14360 days ago · 0 km deep · 11 km away
  19. 1.77 km WSW of Cobb, California · 14360 days ago · 2 km deep · 3 km away
  20. 1.59 km W of Cobb, California · 14361 days ago · -1 km deep · 4 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1150433. Read Sun, Oct 4, 2026, 5:07 PM UTC.