California earthquakes

M1.6 earthquake 3 km NNE of Pacifica, California

A magnitude 1.6 earthquake struck 3 km NNE of Pacifica, California on Mon, Jan 10, 1983, 8:30 AM PST (16:30 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M1.9 1 km SE of Danville, California. This one was a foreshock.

Pacifica 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), micro
Local time
UTC
1983-01-10 16:30:05 UTC
Depth
9.7 km (6.0 mi), shallow
Epicenter
37.643° N, 122.472° 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 1.4 km horizontally, 1.4 km in depth
Magnitude uncertainty
±0.16
Depth from
From location
Station coverage gap
129°
Stations used
12

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 63 in the 60 days after this one and 20 in the 30 days before it.

After

  1. 1.91 km SE of Danville, California · 15961 days ago · 6 km deep · 47 km away
  2. 1.72 km WSW of Broadmoor, California · 15961 days ago · 12 km deep · 5 km away
  3. 1.615 km SE of Livermore, California · 15960 days ago · 1 km deep · 72 km away
  4. 2.06 km NNE of East Foothills, California · 15958 days ago · 5 km deep · 64 km away
  5. 1.7Northern California · 15956 days ago · 6 km deep · 76 km away
  6. 1.93 km NNE of San Leandro, California · 15951 days ago · 4 km deep · 31 km away
  7. 2.09 km ENE of Morgan Hill, California · 15949 days ago · 4 km deep · 97 km away
  8. 1.63 km SSE of Portola Valley, California · 15945 days ago · 10 km deep · 39 km away
  9. 1.611 km ESE of Seven Trees, California · 15944 days ago · 6 km deep · 80 km away
  10. 1.69 km NE of San Martin, California · 15943 days ago · 8 km deep · 98 km away
  11. 2.026 km WNW of Diablo Grande, California · 15943 days ago · 4 km deep · 83 km away
  12. 2.411 km NW of Moskowite Corner, California · 15943 days ago · 8 km deep · 99 km away
  13. 1.5Northern California · 15940 days ago · 7 km deep · 84 km away
  14. 2.88 km ESE of East Foothills, California · 15938 days ago · 6 km deep · 73 km away
  15. 3.04 km NNE of Fremont, California · 15936 days ago · 10 km deep · 45 km away
  16. 1.66 km SSW of Livermore, California · 15934 days ago · 1 km deep · 59 km away
  17. 2.611 km NW of Davenport, California · 15934 days ago · 14 km deep · 64 km away
  18. 2.09 km ENE of Morgan Hill, California · 15930 days ago · 6 km deep · 97 km away
  19. 1.99 km NNE of San Martin, California · 15930 days ago · 5 km deep · 98 km away
  20. 1.55 km E of Sonoma, California · 15930 days ago · 8 km deep · 72 km away
  21. 2.29 km S of Antioch, California · 15929 days ago · 5 km deep · 65 km away
  22. 1.913 km E of Seven Trees, California · 15929 days ago · 4 km deep · 79 km away
  23. 2.88 km ESE of East Foothills, California · 15928 days ago · 6 km deep · 73 km away
  24. 2.110 km NW of Davenport, California · 15926 days ago · 11 km deep · 65 km away
  25. 2.314 km SSE of Pescadero, California · 15923 days ago · 15 km deep · 58 km away
  26. 1.98 km ESE of East Foothills, California · 15923 days ago · 8 km deep · 73 km away
  27. 1.614 km E of Seven Trees, California · 15922 days ago · 3 km deep · 80 km away
  28. 2.07 km E of Larkfield-Wikiup, California · 15922 days ago · 5 km deep · 98 km away
  29. 1.614 km N of Morgan Hill, California · 15922 days ago · 7 km deep · 86 km away
  30. 2.09 km SSW of Loyola, California · 15922 days ago · 9 km deep · 50 km away
  31. 1.85 km N of East Foothills, California · 15922 days ago · 4 km deep · 62 km away
  32. 2.05 km N of East Foothills, California · 15921 days ago · 4 km deep · 62 km away
  33. 1.912 km SSE of Tracy, California · 15920 days ago · 8 km deep · 96 km away
  34. 1.810 km SSE of Tracy, California · 15920 days ago · 10 km deep · 97 km away
  35. 2.69 km ENE of Morgan Hill, California · 15919 days ago · 2 km deep · 97 km away
  36. 3.09 km ENE of Morgan Hill, California · 15919 days ago · 4 km deep · 97 km away
  37. 2.39 km ENE of Morgan Hill, California · 15919 days ago · 2 km deep · 97 km away
  38. 1.79 km SSW of Loyola, California · 15918 days ago · 9 km deep · 49 km away
  39. 1.89 km ENE of Morgan Hill, California · 15918 days ago · 1 km deep · 97 km away
  40. 2.212 km NNE of East Foothills, California · 15917 days ago · 6 km deep · 67 km away
  41. 1.72 km N of San Leandro, California · 15917 days ago · 5 km deep · 30 km away
  42. 1.56 km N of East Foothills, California · 15916 days ago · 4 km deep · 62 km away
  43. 2.32 km ENE of Berkeley, California · 15916 days ago · 9 km deep · 33 km away
  44. 2.810 km ESE of East Foothills, California · 15916 days ago · 8 km deep · 75 km away
  45. 1.59 km ESE of Clayton, California · 15915 days ago · 9 km deep · 63 km away
  46. 2.210 km S of Muir Beach, California · 15915 days ago · 0 km deep · 16 km away
  47. 2.05 km S of Calistoga, California · 15914 days ago · 6 km deep · 99 km away
  48. 1.813 km ESE of East Foothills, California · 15914 days ago · 8 km deep · 78 km away
  49. 2.49 km SSW of Loyola, California · 15913 days ago · 9 km deep · 50 km away
  50. 1.610 km SSW of Loyola, California · 15913 days ago · 9 km deep · 50 km away
  51. 1.68 km NE of San Martin, California · 15913 days ago · 2 km deep · 98 km away
  52. 1.610 km NW of Davenport, California · 15913 days ago · 8 km deep · 65 km away
  53. 1.73 km NNW of Santa Rosa, California · 15913 days ago · 7 km deep · 95 km away
  54. 1.66 km ESE of Santa Rosa, California · 15911 days ago · 6 km deep · 89 km away
  55. 1.63 km ESE of Roseland, California · 15909 days ago · 6 km deep · 87 km away
  56. 1.72 km E of Berkeley, California · 15908 days ago · 9 km deep · 32 km away
  57. 1.86 km NNE of Interlaken, California · 15907 days ago · 10 km deep · 98 km away
  58. 1.912 km N of Morgan Hill, California · 15907 days ago · 5 km deep · 87 km away
  59. 2.710 km NNE of East Foothills, California · 15907 days ago · 7 km deep · 65 km away
  60. 1.86 km NNE of Interlaken, California · 15906 days ago · 9 km deep · 98 km away

The first 60 of 63.

Before

  1. 2.56 km ENE of East Foothills, California · 15962 days ago · 7 km deep · 68 km away
  2. 2.27 km WSW of Moskowite Corner, California · 15963 days ago · 13 km deep · 89 km away
  3. 1.53 km NNE of Bay Point, California · 15964 days ago · 19 km deep · 65 km away
  4. 2.96 km NE of East Foothills, California · 15965 days ago · 9 km deep · 67 km away
  5. 1.77 km NW of Moskowite Corner, California · 15966 days ago · 2 km deep · 97 km away
  6. 1.610 km SW of Brentwood, California · 15967 days ago · 16 km deep · 66 km away
  7. 1.91 km ENE of Piedmont, California · 15970 days ago · 7 km deep · 31 km away
  8. 1.74 km SSE of Fairview, California · 15971 days ago · 7 km deep · 39 km away
  9. 1.81 km E of Deer Park, California · 15973 days ago · 11 km deep · 99 km away
  10. 1.81 km E of Union City, California · 15973 days ago · 7 km deep · 42 km away
  11. 2.24 km NNW of Benicia, California · 15973 days ago · 7 km deep · 56 km away
  12. 2.48 km ESE of East Foothills, California · 15974 days ago · 6 km deep · 74 km away
  13. 1.93 km SE of Piedmont, California · 15979 days ago · 9 km deep · 30 km away
  14. 1.613 km S of Mountain House, California · 15983 days ago · 0 km deep · 81 km away
  15. 1.71 km NE of Pleasant Hill, California · 15983 days ago · 9 km deep · 51 km away
  16. 1.921 km SE of Livermore, California · 15984 days ago · 8 km deep · 78 km away
  17. 2.016 km E of Seven Trees, California · 15989 days ago · 7 km deep · 82 km away
  18. 2.218 km NE of East Foothills, California · 15991 days ago · 6 km deep · 70 km away
  19. 1.74 km S of Fairview, California · 15991 days ago · 4 km deep · 38 km away
  20. 2.25 km NNW of Pittsburg, California · 15991 days ago · 17 km deep · 69 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1085079. Read Wed, Sep 23, 2026, 12:27 AM UTC.