California earthquakes

M2.5 earthquake 11 km E of Blackhawk, California

A magnitude 2.5 earthquake struck 11 km E of Blackhawk, California on Mon, Feb 4, 1980, 3:22 PM PST (23:22 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M2.6 9 km N of Livermore, 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
2.5 (md), micro
Local time
UTC
1980-02-04 23:22:25 UTC
Depth
9.4 km (5.8 mi), shallow
Epicenter
37.838° N, 121.780° 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 0.3 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
133°
Stations used
37

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 159 in the 60 days after this one and 13 in the 30 days before it.

After

  1. 1.79 km E of Blackhawk, California · 17032 days ago · 8 km deep · 2 km away
  2. 1.85 km SSW of Gilroy, California · 17032 days ago · 4 km deep · 99 km away
  3. 1.67 km WSW of Byron, California · 17032 days ago · 5 km deep · 6 km away
  4. 2.211 km E of Blackhawk, California · 17032 days ago · 5 km deep · 0 km away
  5. 1.69 km NNE of Livermore, California · 17031 days ago · 10 km deep · 10 km away
  6. 1.97 km NE of Gilroy, California · 17031 days ago · 7 km deep · 91 km away
  7. 2.69 km N of Livermore, California · 17031 days ago · 2 km deep · 8 km away
  8. 1.611 km E of Blackhawk, California · 17031 days ago · 11 km deep · 2 km away
  9. 2.511 km SW of Brentwood, California · 17030 days ago · 15 km deep · 2 km away
  10. 2.57 km NNE of East Foothills, California · 17030 days ago · 4 km deep · 45 km away
  11. 1.915 km E of Seven Trees, California · 17030 days ago · 5 km deep · 62 km away
  12. 1.612 km E of Lexington Hills, California · 17030 days ago · 6 km deep · 76 km away
  13. 1.612 km WSW of Byron, California · 17030 days ago · 6 km deep · 3 km away
  14. 2.712 km SW of Byron, California · 17030 days ago · 11 km deep · 6 km away
  15. 2.312 km SW of Byron, California · 17030 days ago · 11 km deep · 5 km away
  16. 1.93 km S of Diablo, California · 17030 days ago · 9 km deep · 16 km away
  17. 1.88 km E of Gilroy, California · 17029 days ago · 6 km deep · 96 km away
  18. 1.910 km ESE of Livermore, California · 17029 days ago · 3 km deep · 25 km away
  19. 1.68 km NE of Livermore, California · 17029 days ago · 13 km deep · 13 km away
  20. 2.511 km E of Livermore, California · 17029 days ago · 7 km deep · 23 km away
  21. 1.85 km SE of Livermore, California · 17029 days ago · 0 km deep · 22 km away
  22. 2.11 km WSW of Livermore, California · 17029 days ago · 57 km deep · 18 km away
  23. 2.17 km NW of Bayview, California · 17029 days ago · 9 km deep · 58 km away
  24. 2.08 km ESE of Livermore, California · 17028 days ago · 4 km deep · 22 km away
  25. 1.69 km NE of San Martin, California · 17028 days ago · 8 km deep · 80 km away
  26. 1.7Northern California · 17028 days ago · 4 km deep · 92 km away
  27. 2.411 km SW of Brentwood, California · 17028 days ago · 5 km deep · 3 km away
  28. 2.49 km NNE of Livermore, California · 17028 days ago · 11 km deep · 10 km away
  29. 2.16 km E of Santa Venetia, California · 17028 days ago · 3 km deep · 62 km away
  30. 2.19 km ENE of Blackhawk, California · 17028 days ago · 12 km deep · 2 km away
  31. 1.610 km ENE of Blackhawk, California · 17027 days ago · 9 km deep · 1 km away
  32. 2.411 km E of Blackhawk, California · 17027 days ago · 8 km deep · 1 km away
  33. 1.917 km SE of Livermore, California · 17027 days ago · 3 km deep · 32 km away
  34. 2.310 km E of Blackhawk, California · 17027 days ago · 0 km deep · 3 km away
  35. 2.19 km NNE of Livermore, California · 17027 days ago · 11 km deep · 9 km away
  36. 2.55 km NE of East Foothills, California · 17026 days ago · 7 km deep · 47 km away
  37. 2.09 km S of Antioch, California · 17026 days ago · 12 km deep · 10 km away
  38. 2.08 km S of Antioch, California · 17026 days ago · 11 km deep · 10 km away
  39. 1.68 km S of Antioch, California · 17026 days ago · 12 km deep · 10 km away
  40. 2.012 km SW of Byron, California · 17026 days ago · 10 km deep · 5 km away
  41. 1.99 km E of Blackhawk, California · 17025 days ago · 11 km deep · 2 km away
  42. 1.612 km E of Blackhawk, California · 17025 days ago · 9 km deep · 2 km away
  43. 1.719 km SSE of Livermore, California · 17025 days ago · 0 km deep · 36 km away
  44. 1.96 km SSW of Sunol, California · 17025 days ago · 7 km deep · 36 km away
  45. 1.68 km ENE of San Martin, California · 17024 days ago · 5 km deep · 84 km away
  46. 1.611 km SW of Byron, California · 17024 days ago · 1 km deep · 7 km away
  47. 1.911 km ENE of Blackhawk, California · 17024 days ago · 6 km deep · 4 km away
  48. 3.011 km ESE of Livermore, California · 17024 days ago · 4 km deep · 23 km away
  49. 2.510 km E of Blackhawk, California · 17024 days ago · 11 km deep · 1 km away
  50. 2.59 km NNE of Livermore, California · 17024 days ago · 14 km deep · 10 km away
  51. 1.77 km WSW of Brentwood, California · 17024 days ago · 15 km deep · 7 km away
  52. 2.59 km ENE of Blackhawk, California · 17024 days ago · 13 km deep · 2 km away
  53. 2.012 km ESE of East Foothills, California · 17023 days ago · 7 km deep · 58 km away
  54. 1.58 km ENE of Gilroy, California · 17023 days ago · 7 km deep · 94 km away
  55. 2.17 km ENE of Rohnert Park, California · 17023 days ago · 4 km deep · 95 km away
  56. 1.99 km ESE of Blackhawk, California · 17022 days ago · 1 km deep · 4 km away
  57. 2.07 km SSW of Loyola, California · 17021 days ago · 1 km deep · 68 km away
  58. 1.914 km NE of San Martin, California · 17020 days ago · 2 km deep · 79 km away
  59. 1.89 km ENE of Gilroy, California · 17020 days ago · 9 km deep · 93 km away
  60. 2.28 km N of Interlaken, California · 17020 days ago · 10 km deep · 90 km away

The first 60 of 159.

Before

  1. 2.211 km E of Blackhawk, California · 17032 days ago · 9 km deep · 0 km away
  2. 1.911 km E of Livermore, California · 17032 days ago · 0 km deep · 23 km away
  3. 1.915 km E of Seven Trees, California · 17032 days ago · 6 km deep · 62 km away
  4. 3.315 km E of Seven Trees, California · 17033 days ago · 6 km deep · 62 km away
  5. 2.010 km ENE of Blackhawk, California · 17033 days ago · 12 km deep · 2 km away
  6. 1.69 km ENE of Blackhawk, California · 17033 days ago · 11 km deep · 2 km away
  7. 1.98 km NE of Livermore, California · 17033 days ago · 4 km deep · 14 km away
  8. 1.511 km ENE of Blackhawk, California · 17033 days ago · 6 km deep · 2 km away
  9. 1.611 km SE of Livermore, California · 17033 days ago · 7 km deep · 26 km away
  10. 1.810 km SW of Brentwood, California · 17034 days ago · 5 km deep · 3 km away
  11. 1.610 km ENE of Blackhawk, California · 17034 days ago · 5 km deep · 4 km away
  12. 1.76 km WSW of Gilroy, California · 17034 days ago · 5 km deep · 96 km away
  13. 2.15 km ENE of San Martin, California · 17034 days ago · 4 km deep · 84 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1050813. Read Tue, Sep 22, 2026, 10:28 PM UTC.