California earthquakes

M2.8 earthquake 9 km ENE of Patterson, California

A magnitude 2.8 earthquake struck 9 km ENE of Patterson, California on Thu, Dec 7, 1978, 5:48 PM PST (01:48 UTC), 14 km (8 mi) below the surface.

A larger quake followed: M3.3 4 km ENE of East Foothills, California. This one was a foreshock.

Patterson 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
2.8 (md), micro
Local time
UTC
1978-12-08 01:48:06 UTC
Depth
13.7 km (8.5 mi), shallow
Epicenter
37.489° N, 121.026° 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 0.4 km horizontally, 0.7 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
83°
Stations used
44

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 107 in the 60 days after this one and 32 in the 30 days before it.

After

  1. 2.419 km WSW of Diablo Grande, California · 17456 days ago · 7 km deep · 44 km away
  2. 1.77 km ENE of Interlaken, California · 17455 days ago · 2 km deep · 80 km away
  3. 1.87 km NNW of Hollister, California · 17455 days ago · 2 km deep · 73 km away
  4. 1.69 km NNW of Hollister, California · 17454 days ago · 7 km deep · 74 km away
  5. 2.39 km NNW of Hollister, California · 17454 days ago · 6 km deep · 73 km away
  6. 2.4Central California · 17453 days ago · 7 km deep · 96 km away
  7. 1.53 km NNW of Hollister, California · 17453 days ago · 6 km deep · 76 km away
  8. 1.721 km SSE of Tres Pinos, California · 17452 days ago · 2 km deep · 99 km away
  9. 1.616 km SSE of Tres Pinos, California · 17448 days ago · 8 km deep · 96 km away
  10. 1.711 km ESE of East Foothills, California · 17447 days ago · 7 km deep · 61 km away
  11. 2.010 km S of Tres Pinos, California · 17446 days ago · 5 km deep · 92 km away
  12. 3.34 km ENE of East Foothills, California · 17446 days ago · 2 km deep · 67 km away
  13. 2.14 km N of East Foothills, California · 17444 days ago · 2 km deep · 70 km away
  14. 1.66 km NW of Morgan Hill, California · 17442 days ago · 6 km deep · 68 km away
  15. 1.816 km E of Tres Pinos, California · 17441 days ago · 5 km deep · 76 km away
  16. 2.422 km NNE of Soledad, California · 17439 days ago · 9 km deep · 100 km away
  17. 1.66 km NE of Interlaken, California · 17439 days ago · 11 km deep · 80 km away
  18. 1.71 km NE of Tres Pinos, California · 17439 days ago · 8 km deep · 80 km away
  19. 1.611 km SE of Sunol, California · 17439 days ago · 3 km deep · 67 km away
  20. 1.816 km SSE of Tres Pinos, California · 17439 days ago · 5 km deep · 96 km away
  21. 1.68 km N of Interlaken, California · 17438 days ago · 11 km deep · 80 km away
  22. 2.08 km N of Interlaken, California · 17438 days ago · 11 km deep · 80 km away
  23. 2.714 km S of Tracy, California · 17438 days ago · 2 km deep · 36 km away
  24. 1.626 km ENE of East Foothills, California · 17437 days ago · 5 km deep · 47 km away
  25. 2.36 km E of East Foothills, California · 17437 days ago · 6 km deep · 64 km away
  26. 2.82 km SSW of Hollister, California · 17436 days ago · 9 km deep · 80 km away
  27. 2.114 km E of Seven Trees, California · 17435 days ago · 3 km deep · 61 km away
  28. 1.85 km NNE of Morgan Hill, California · 17433 days ago · 7 km deep · 64 km away
  29. 2.48 km N of East Foothills, California · 17432 days ago · 6 km deep · 69 km away
  30. 1.56 km E of East Foothills, California · 17431 days ago · 7 km deep · 64 km away
  31. 3.310 km SSE of Tres Pinos, California · 17430 days ago · 5 km deep · 91 km away
  32. 2.59 km SSE of Tres Pinos, California · 17430 days ago · 5 km deep · 91 km away
  33. 1.919 km WSW of Diablo Grande, California · 17430 days ago · 8 km deep · 44 km away
  34. 1.72 km W of Cambrian Park, California · 17429 days ago · 8 km deep · 86 km away
  35. 1.534 km ENE of Soledad, California · 17429 days ago · 6 km deep · 99 km away
  36. 2.116 km NE of East Foothills, California · 17427 days ago · 6 km deep · 56 km away
  37. 2.48 km NE of Gilroy, California · 17427 days ago · 7 km deep · 63 km away
  38. 2.48 km NE of Interlaken, California · 17425 days ago · 4 km deep · 78 km away
  39. 2.11 km N of Tres Pinos, California · 17424 days ago · 9 km deep · 80 km away
  40. 1.713 km S of Tres Pinos, California · 17424 days ago · 4 km deep · 94 km away
  41. 1.614 km E of Seven Trees, California · 17423 days ago · 6 km deep · 61 km away
  42. 2.210 km ESE of Gilroy, California · 17423 days ago · 5 km deep · 69 km away
  43. 2.29 km ESE of Gilroy, California · 17423 days ago · 5 km deep · 69 km away
  44. 1.62 km SW of Ridgemark, California · 17422 days ago · 7 km deep · 84 km away
  45. 2.38 km NE of Interlaken, California · 17422 days ago · 5 km deep · 78 km away
  46. 1.88 km NE of Interlaken, California · 17422 days ago · 4 km deep · 79 km away
  47. 1.813 km S of Tres Pinos, California · 17422 days ago · 4 km deep · 94 km away
  48. 1.913 km S of Tres Pinos, California · 17421 days ago · 4 km deep · 94 km away
  49. 2.58 km NNE of Interlaken, California · 17421 days ago · 10 km deep · 80 km away
  50. 2.18 km N of Interlaken, California · 17421 days ago · 10 km deep · 80 km away
  51. 3.18 km N of Interlaken, California · 17421 days ago · 10 km deep · 80 km away
  52. 2.38 km N of Interlaken, California · 17421 days ago · 9 km deep · 80 km away
  53. 3.65 km E of East Foothills, California · 17421 days ago · 0 km deep · 65 km away
  54. 2.95 km E of East Foothills, California · 17421 days ago · 0 km deep · 65 km away
  55. 1.95 km E of East Foothills, California · 17421 days ago · 0 km deep · 65 km away
  56. 1.78 km NW of Hollister, California · 17421 days ago · 6 km deep · 76 km away
  57. 2.38 km ENE of San Martin, California · 17419 days ago · 8 km deep · 60 km away
  58. 2.120 km SSE of Tres Pinos, California · 17419 days ago · 6 km deep · 98 km away
  59. 1.521 km SSE of Tres Pinos, California · 17419 days ago · 5 km deep · 99 km away
  60. 2.11 km WNW of Diablo, California · 17419 days ago · 9 km deep · 92 km away

The first 60 of 107.

Before

  1. 1.75 km S of Tres Pinos, California · 17456 days ago · 8 km deep · 88 km away
  2. 1.67 km ENE of Gilroy, California · 17457 days ago · 5 km deep · 66 km away
  3. 2.48 km SE of Sunol, California · 17459 days ago · 10 km deep · 70 km away
  4. 2.59 km S of Tres Pinos, California · 17460 days ago · 4 km deep · 92 km away
  5. 1.713 km SSE of Tres Pinos, California · 17463 days ago · 4 km deep · 94 km away
  6. 1.711 km SE of Sunol, California · 17463 days ago · 3 km deep · 67 km away
  7. 2.113 km SSE of Tres Pinos, California · 17463 days ago · 3 km deep · 94 km away
  8. 2.42 km SW of San Juan Bautista, California · 17464 days ago · 6 km deep · 87 km away
  9. 2.114 km SE of Livermore, California · 17467 days ago · 1 km deep · 58 km away
  10. 2.42 km SSW of Vallecito, California · 17467 days ago · 14 km deep · 80 km away
  11. 1.69 km SSW of Tres Pinos, California · 17467 days ago · 1 km deep · 92 km away
  12. 1.6Central California · 17469 days ago · 3 km deep · 91 km away
  13. 1.99 km ESE of Gilroy, California · 17469 days ago · 5 km deep · 68 km away
  14. 1.98 km ESE of Gilroy, California · 17469 days ago · 5 km deep · 68 km away
  15. 1.74 km E of Livermore, California · 17470 days ago · 9 km deep · 64 km away
  16. 2.18 km SSW of Tres Pinos, California · 17472 days ago · 2 km deep · 90 km away
  17. 2.119 km SSE of Tres Pinos, California · 17472 days ago · 5 km deep · 97 km away
  18. 1.510 km ESE of East Foothills, California · 17473 days ago · 8 km deep · 63 km away
  19. 1.810 km ESE of East Foothills, California · 17473 days ago · 8 km deep · 62 km away
  20. 1.916 km ENE of East Foothills, California · 17478 days ago · 6 km deep · 54 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1043659. Read Tue, Sep 22, 2026, 10:26 PM UTC.