California earthquakes

M1.9 earthquake 4 km ESE of Interlaken, California

A magnitude 1.9 earthquake struck 4 km ESE of Interlaken, California on Mon, Mar 30, 1987, 10:19 PM PST (06:19 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M2.1 20 km NE of East Foothills, California. This one was a foreshock.

Interlaken 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), micro
Local time
UTC
1987-03-31 06:19:20 UTC
Depth
10.2 km (6.3 mi), shallow
Epicenter
36.938° N, 121.681° 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, 0.3 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
73°
Stations used
62

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 150 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 1.820 km NE of East Foothills, California · 14420 days ago · 0 km deep · 64 km away
  2. 1.712 km NE of East Foothills, California · 14419 days ago · 8 km deep · 59 km away
  3. 2.120 km NE of East Foothills, California · 14419 days ago · 1 km deep · 64 km away
  4. 1.920 km NE of East Foothills, California · 14419 days ago · 0 km deep · 64 km away
  5. 1.618 km NE of East Foothills, California · 14419 days ago · 6 km deep · 64 km away
  6. 1.85 km NNE of Tres Pinos, California · 14418 days ago · 7 km deep · 37 km away
  7. 1.718 km NE of East Foothills, California · 14418 days ago · 5 km deep · 64 km away
  8. 2.0Central California · 14418 days ago · 17 km deep · 97 km away
  9. 1.86 km S of Tres Pinos, California · 14417 days ago · 8 km deep · 39 km away
  10. 1.912 km ESE of East Foothills, California · 14417 days ago · 1 km deep · 46 km away
  11. 1.66 km ENE of Hollister, California · 14417 days ago · 9 km deep · 32 km away
  12. 2.07 km SW of Mountain House, California · 14417 days ago · 15 km deep · 89 km away
  13. 2.81 km NNW of Castro Valley, California · 14417 days ago · 5 km deep · 93 km away
  14. 2.324 km NE of Greenfield, California · 14416 days ago · 2 km deep · 77 km away
  15. 2.014 km N of Morgan Hill, California · 14415 days ago · 5 km deep · 36 km away
  16. 2.910 km S of Tres Pinos, California · 14415 days ago · 4 km deep · 41 km away
  17. 2.610 km S of Tres Pinos, California · 14415 days ago · 4 km deep · 41 km away
  18. 1.612 km ENE of East Foothills, California · 14414 days ago · 8 km deep · 54 km away
  19. 1.524 km NE of Greenfield, California · 14413 days ago · 6 km deep · 77 km away
  20. 1.512 km NE of East Foothills, California · 14413 days ago · 6 km deep · 59 km away
  21. 2.09 km SSW of Tres Pinos, California · 14413 days ago · 3 km deep · 38 km away
  22. 2.07 km E of East Foothills, California · 14413 days ago · 6 km deep · 49 km away
  23. 2.723 km ENE of Soledad, California · 14412 days ago · 5 km deep · 71 km away
  24. 1.523 km NE of Greenfield, California · 14412 days ago · 10 km deep · 77 km away
  25. 1.73 km NW of Sunol, California · 14412 days ago · 3 km deep · 78 km away
  26. 1.519 km NE of East Foothills, California · 14411 days ago · 7 km deep · 64 km away
  27. 2.310 km ESE of East Foothills, California · 14411 days ago · 8 km deep · 45 km away
  28. 3.415 km SSE of Livermore, California · 14411 days ago · 4 km deep · 70 km away
  29. 2.610 km ESE of East Foothills, California · 14411 days ago · 7 km deep · 46 km away
  30. 2.113 km ENE of East Foothills, California · 14410 days ago · 7 km deep · 56 km away
  31. 1.713 km ENE of East Foothills, California · 14410 days ago · 7 km deep · 55 km away
  32. 1.724 km NE of Greenfield, California · 14409 days ago · 5 km deep · 77 km away
  33. 1.66 km NNE of Tres Pinos, California · 14408 days ago · 4 km deep · 35 km away
  34. 1.737 km NE of Greenfield, California · 14408 days ago · 13 km deep · 83 km away
  35. 2.417 km SSE of Livermore, California · 14408 days ago · 2 km deep · 67 km away
  36. 2.03 km ESE of Seven Trees, California · 14408 days ago · 7 km deep · 39 km away
  37. 1.925 km NE of King City, California · 14407 days ago · 1 km deep · 87 km away
  38. 3.02 km W of Hollister, California · 14407 days ago · 5 km deep · 24 km away
  39. 3.314 km N of Morgan Hill, California · 14407 days ago · 4 km deep · 36 km away
  40. 1.6Central California · 14406 days ago · 9 km deep · 68 km away
  41. 1.52 km WSW of Cambrian Park, California · 14405 days ago · 6 km deep · 43 km away
  42. 2.122 km ENE of Soledad, California · 14404 days ago · 8 km deep · 68 km away
  43. 1.610 km ESE of Seven Trees, California · 14404 days ago · 2 km deep · 34 km away
  44. 1.85 km ENE of Hollister, California · 14403 days ago · 7 km deep · 31 km away
  45. 2.36 km NNE of East Foothills, California · 14402 days ago · 5 km deep · 55 km away
  46. 3.128 km SE of Tres Pinos, California · 14402 days ago · 8 km deep · 64 km away
  47. 1.617 km NNE of Soledad, California · 14401 days ago · 11 km deep · 56 km away
  48. 2.01 km W of Tres Pinos, California · 14401 days ago · 4 km deep · 35 km away
  49. 2.78 km NE of San Martin, California · 14401 days ago · 7 km deep · 25 km away
  50. 1.524 km NE of Greenfield, California · 14400 days ago · 0 km deep · 77 km away
  51. 1.75 km ENE of Hollister, California · 14400 days ago · 7 km deep · 30 km away
  52. 2.71 km ENE of San Ramon, California · 14400 days ago · 8 km deep · 98 km away
  53. 2.11 km NE of San Ramon, California · 14400 days ago · 7 km deep · 98 km away
  54. 1.71 km ENE of San Ramon, California · 14400 days ago · 8 km deep · 97 km away
  55. 2.017 km S of Big Sur, California · 14399 days ago · 12 km deep · 92 km away
  56. 3.27 km NNE of East Foothills, California · 14399 days ago · 7 km deep · 57 km away
  57. 1.87 km NNE of East Foothills, California · 14399 days ago · 7 km deep · 57 km away
  58. 2.27 km NNE of East Foothills, California · 14399 days ago · 7 km deep · 57 km away
  59. 1.921 km NNE of Soledad, California · 14398 days ago · 6 km deep · 58 km away
  60. 1.621 km NE of Soledad, California · 14398 days ago · 2 km deep · 62 km away

The first 60 of 150.

Before

  1. 1.61 km ESE of Tres Pinos, California · 14421 days ago · 8 km deep · 38 km away
  2. 1.514 km E of Seven Trees, California · 14422 days ago · 1 km deep · 39 km away
  3. 1.76 km NNE of Tres Pinos, California · 14422 days ago · 4 km deep · 35 km away
  4. 1.622 km SE of Tres Pinos, California · 14422 days ago · 8 km deep · 57 km away
  5. 2.020 km NE of East Foothills, California · 14422 days ago · 1 km deep · 64 km away
  6. 1.5Northern California · 14422 days ago · 13 km deep · 64 km away
  7. 2.918 km SSE of Livermore, California · 14423 days ago · 2 km deep · 67 km away
  8. 1.815 km SSE of Livermore, California · 14424 days ago · 4 km deep · 70 km away
  9. 1.72 km E of Big Sur, California · 14424 days ago · 15 km deep · 74 km away
  10. 2.48 km ENE of San Martin, California · 14424 days ago · 8 km deep · 25 km away
  11. 1.622 km NE of Soledad, California · 14425 days ago · 4 km deep · 66 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc97713. Read Tue, Sep 22, 2026, 5:23 PM UTC.