California earthquakes

M1.6 earthquake 10 km E of Blackhawk, California

A magnitude 1.6 earthquake struck 10 km E of Blackhawk, California on Sat, Feb 10, 1990, 4:38 PM PST (00:38 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.4 3 km SSE of North Gate, California. This one was a foreshock.

Blackhawk 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
1.6 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1990-02-11 00:38:02 UTC
Depth
10.3 km (6.4 mi), shallow
Epicenter
37.837° N, 121.789° 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
149°
Stations used
22

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 173 in the 60 days after this one and 88 in the 30 days before it.

After

  1. 2.01 km NE of Interlaken, California · 13384 days ago · 13 km deep · 97 km away
  2. 1.82 km NE of Saratoga, California · 13383 days ago · 5 km deep · 65 km away
  3. 2.64 km NNW of Day Valley, California · 13382 days ago · 12 km deep · 86 km away
  4. 2.44 km NNW of Day Valley, California · 13381 days ago · 13 km deep · 85 km away
  5. 1.712 km ESE of East Foothills, California · 13381 days ago · 5 km deep · 58 km away
  6. 1.57 km NE of Rohnert Park, California · 13380 days ago · 6 km deep · 95 km away
  7. 1.711 km E of Blackhawk, California · 13380 days ago · 15 km deep · 3 km away
  8. 2.84 km ENE of Interlaken, California · 13380 days ago · 6 km deep · 98 km away
  9. 2.0Northern California · 13380 days ago · 10 km deep · 92 km away
  10. 1.59 km NNE of Morgan Hill, California · 13379 days ago · 3 km deep · 72 km away
  11. 1.94 km NE of Amesti, California · 13379 days ago · 12 km deep · 93 km away
  12. 1.72 km SW of Saratoga, California · 13379 days ago · 10 km deep · 69 km away
  13. 1.58 km ENE of Morgan Hill, California · 13378 days ago · 3 km deep · 77 km away
  14. 2.51 km SSW of Monte Sereno, California · 13378 days ago · 3 km deep · 71 km away
  15. 1.88 km N of Day Valley, California · 13378 days ago · 3 km deep · 81 km away
  16. 2.83 km NNW of Interlaken, California · 13378 days ago · 14 km deep · 95 km away
  17. 2.54 km N of Day Valley, California · 13378 days ago · 16 km deep · 84 km away
  18. 1.77 km SW of Kenwood, California · 13377 days ago · 4 km deep · 93 km away
  19. 2.85 km SSW of Gilroy, California · 13377 days ago · 3 km deep · 99 km away
  20. 1.618 km S of Tracy, California · 13377 days ago · 1 km deep · 42 km away
  21. 1.812 km N of Morgan Hill, California · 13376 days ago · 5 km deep · 67 km away
  22. 1.88 km ENE of San Martin, California · 13376 days ago · 5 km deep · 84 km away
  23. 1.66 km NW of Broadmoor, California · 13376 days ago · 12 km deep · 67 km away
  24. 1.93 km NNW of Corralitos, California · 13375 days ago · 15 km deep · 91 km away
  25. 1.61 km ENE of Interlaken, California · 13374 days ago · 12 km deep · 98 km away
  26. 1.88 km ENE of Morgan Hill, California · 13372 days ago · 2 km deep · 78 km away
  27. 1.62 km NE of Corralitos, California · 13372 days ago · 14 km deep · 92 km away
  28. 2.78 km ENE of San Martin, California · 13372 days ago · 7 km deep · 84 km away
  29. 1.93 km ESE of Berkeley, California · 13372 days ago · 10 km deep · 40 km away
  30. 2.314 km E of Seven Trees, California · 13370 days ago · 8 km deep · 59 km away
  31. 3.06 km N of Day Valley, California · 13369 days ago · 4 km deep · 83 km away
  32. 2.45 km S of Lexington Hills, California · 13369 days ago · 14 km deep · 81 km away
  33. 2.07 km ENE of Rohnert Park, California · 13368 days ago · 3 km deep · 93 km away
  34. 1.64 km E of Interlaken, California · 13368 days ago · 10 km deep · 100 km away
  35. 3.014 km N of Morgan Hill, California · 13368 days ago · 7 km deep · 66 km away
  36. 1.93 km E of Day Valley, California · 13368 days ago · 13 km deep · 90 km away
  37. 1.66 km N of Day Valley, California · 13368 days ago · 3 km deep · 82 km away
  38. 2.26 km ENE of Rohnert Park, California · 13367 days ago · 6 km deep · 93 km away
  39. 1.810 km NE of Milpitas, California · 13367 days ago · 7 km deep · 38 km away
  40. 2.01 km ENE of Pittsburg, California · 13366 days ago · 19 km deep · 23 km away
  41. 2.15 km SW of Monte Sereno, California · 13365 days ago · 13 km deep · 74 km away
  42. 1.815 km ESE of East Foothills, California · 13363 days ago · 2 km deep · 59 km away
  43. 1.86 km NNE of Corralitos, California · 13363 days ago · 7 km deep · 88 km away
  44. 1.57 km SW of Monte Sereno, California · 13363 days ago · 13 km deep · 75 km away
  45. 2.32 km SSW of Saratoga, California · 13362 days ago · 8 km deep · 69 km away
  46. 1.70 km ENE of Millbrae, California · 13361 days ago · 12 km deep · 58 km away
  47. 1.71 km ENE of Millbrae, California · 13361 days ago · 11 km deep · 58 km away
  48. 2.15 km SSW of Gilroy, California · 13361 days ago · 3 km deep · 99 km away
  49. 1.89 km NNE of Day Valley, California · 13360 days ago · 4 km deep · 80 km away
  50. 1.86 km NE of Amesti, California · 13360 days ago · 13 km deep · 92 km away
  51. 1.84 km WSW of Moskowite Corner, California · 13360 days ago · 3 km deep · 76 km away
  52. 1.93 km W of Lexington Hills, California · 13360 days ago · 11 km deep · 77 km away
  53. 1.85 km SW of Eldridge, California · 13359 days ago · 3 km deep · 86 km away
  54. 2.015 km N of Morgan Hill, California · 13359 days ago · 2 km deep · 64 km away
  55. 1.6Northern California · 13358 days ago · 13 km deep · 1 km away
  56. 2.17 km SW of Monte Sereno, California · 13357 days ago · 14 km deep · 76 km away
  57. 1.63 km S of Lexington Hills, California · 13356 days ago · 13 km deep · 80 km away
  58. 1.74 km NW of Day Valley, California · 13356 days ago · 14 km deep · 86 km away
  59. 1.65 km WSW of Glen Ellen, California · 13356 days ago · 8 km deep · 89 km away
  60. 2.010 km WSW of Morgan Hill, California · 13356 days ago · 2 km deep · 81 km away

The first 60 of 173.

Before

  1. 1.54 km E of Interlaken, California · 13384 days ago · 9 km deep · 99 km away
  2. 1.70 km SW of Campbell, California · 13384 days ago · 3 km deep · 63 km away
  3. 2.20 km WSW of Campbell, California · 13384 days ago · 4 km deep · 63 km away
  4. 1.52 km E of North Gate, California · 13384 days ago · 11 km deep · 18 km away
  5. 1.83 km NNE of Lexington Hills, California · 13385 days ago · 5 km deep · 73 km away
  6. 1.84 km W of Lexington Hills, California · 13386 days ago · 12 km deep · 77 km away
  7. 1.55 km NW of Day Valley, California · 13386 days ago · 14 km deep · 87 km away
  8. 1.94 km E of Interlaken, California · 13387 days ago · 6 km deep · 99 km away
  9. 1.68 km SE of Lexington Hills, California · 13387 days ago · 4 km deep · 80 km away
  10. 4.14 km E of Interlaken, California · 13387 days ago · 7 km deep · 98 km away
  11. 1.617 km WNW of Davenport, California · 13388 days ago · 12 km deep · 97 km away
  12. 2.42 km S of Lexington Hills, California · 13389 days ago · 13 km deep · 79 km away
  13. 1.72 km E of Pacifica, California · 13389 days ago · 7 km deep · 64 km away
  14. 1.54 km NW of Day Valley, California · 13389 days ago · 16 km deep · 87 km away
  15. 1.53 km NNE of Interlaken, California · 13389 days ago · 12 km deep · 96 km away
  16. 2.18 km ESE of East Foothills, California · 13389 days ago · 8 km deep · 54 km away
  17. 2.014 km N of Morgan Hill, California · 13390 days ago · 6 km deep · 65 km away
  18. 1.88 km SE of Livermore, California · 13390 days ago · 6 km deep · 24 km away
  19. 1.98 km SE of Livermore, California · 13390 days ago · 5 km deep · 24 km away
  20. 2.37 km NE of Interlaken, California · 13392 days ago · 3 km deep · 95 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc152237. Read Sat, Oct 3, 2026, 2:22 PM UTC.