California earthquakes

M2.1 earthquake 9 km S of Sunol, California

A magnitude 2.1 earthquake struck 9 km S of Sunol, California on Thu, Jun 4, 1981, 1:10 PM PDT (20:10 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M4.3 4 km SW of Tres Pinos, California. This one was a foreshock.

Sunol 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
2.1 (md), micro
Local time
UTC
1981-06-04 20:10:06 UTC
Depth
6.8 km (4.2 mi), shallow
Epicenter
37.512° N, 121.870° 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, 0.5 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
91°
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: 101 in the 60 days after this one and 52 in the 30 days before it.

After

  1. 1.77 km WSW of Gilroy, California · 16545 days ago · 5 km deep · 63 km away
  2. 1.69 km NNE of Hollister, California · 16544 days ago · 7 km deep · 78 km away
  3. 1.922 km NE of East Foothills, California · 16544 days ago · 5 km deep · 23 km away
  4. 4.34 km SW of Tres Pinos, California · 16543 days ago · 10 km deep · 96 km away
  5. 1.60 km NE of Woodside, California · 16543 days ago · 5 km deep · 35 km away
  6. 2.315 km E of Seven Trees, California · 16543 days ago · 7 km deep · 31 km away
  7. 1.56 km N of Foster City, California · 16540 days ago · 14 km deep · 36 km away
  8. 2.53 km ESE of Aromas, California · 16539 days ago · 6 km deep · 75 km away
  9. 1.58 km ENE of Dublin, California · 16538 days ago · 11 km deep · 25 km away
  10. 2.4Central California · 16537 days ago · 6 km deep · 83 km away
  11. 1.6Northern California · 16537 days ago · 4 km deep · 20 km away
  12. 3.22 km ESE of Aromas, California · 16537 days ago · 6 km deep · 74 km away
  13. 3.02 km ESE of Aromas, California · 16537 days ago · 6 km deep · 73 km away
  14. 1.62 km ESE of Aromas, California · 16537 days ago · 5 km deep · 74 km away
  15. 1.58 km ENE of Day Valley, California · 16536 days ago · 9 km deep · 51 km away
  16. 2.13 km S of San Juan Bautista, California · 16536 days ago · 6 km deep · 83 km away
  17. 1.56 km WNW of Daly City, California · 16535 days ago · 9 km deep · 63 km away
  18. 2.23 km NNW of Hollister, California · 16533 days ago · 7 km deep · 81 km away
  19. 1.910 km NE of Milpitas, California · 16532 days ago · 6 km deep · 6 km away
  20. 2.58 km ENE of Gilroy, California · 16532 days ago · 8 km deep · 63 km away
  21. 2.49 km NNW of Hollister, California · 16532 days ago · 4 km deep · 75 km away
  22. 2.39 km ESE of East Foothills, California · 16532 days ago · 2 km deep · 22 km away
  23. 2.210 km NNW of Hollister, California · 16532 days ago · 4 km deep · 74 km away
  24. 1.87 km NNE of Interlaken, California · 16531 days ago · 10 km deep · 57 km away
  25. 1.610 km ENE of Blackhawk, California · 16531 days ago · 9 km deep · 37 km away
  26. 2.210 km NNW of Hollister, California · 16531 days ago · 4 km deep · 74 km away
  27. 1.58 km ESE of East Foothills, California · 16531 days ago · 9 km deep · 22 km away
  28. 1.89 km ESE of East Foothills, California · 16531 days ago · 8 km deep · 22 km away
  29. 1.815 km N of Morgan Hill, California · 16530 days ago · 2 km deep · 33 km away
  30. 1.65 km SW of Gilroy, California · 16530 days ago · 2 km deep · 64 km away
  31. 2.94 km N of Hollister, California · 16529 days ago · 8 km deep · 80 km away
  32. 1.69 km ESE of East Foothills, California · 16528 days ago · 0 km deep · 22 km away
  33. 1.612 km NNE of Morgan Hill, California · 16528 days ago · 4 km deep · 37 km away
  34. 2.59 km ESE of East Foothills, California · 16528 days ago · 7 km deep · 23 km away
  35. 2.23 km NE of Alamo, California · 16524 days ago · 8 km deep · 41 km away
  36. 2.22 km N of Danville, California · 16523 days ago · 8 km deep · 39 km away
  37. 2.93 km NE of East Foothills, California · 16522 days ago · 2 km deep · 14 km away
  38. 2.02 km WSW of San Juan Bautista, California · 16522 days ago · 7 km deep · 79 km away
  39. 1.98 km SSW of La Selva Beach, California · 16521 days ago · 7 km deep · 71 km away
  40. 1.716 km E of Seven Trees, California · 16518 days ago · 7 km deep · 31 km away
  41. 1.611 km SE of La Honda, California · 16517 days ago · 6 km deep · 40 km away
  42. 1.816 km E of Seven Trees, California · 16517 days ago · 7 km deep · 31 km away
  43. 1.64 km NW of Diablo Grande, California · 16516 days ago · 19 km deep · 51 km away
  44. 2.010 km ESE of Gilroy, California · 16516 days ago · 4 km deep · 71 km away
  45. 2.48 km SSW of Tres Pinos, California · 16516 days ago · 3 km deep · 100 km away
  46. 2.12 km WSW of San Juan Bautista, California · 16516 days ago · 7 km deep · 80 km away
  47. 1.79 km NNE of East Foothills, California · 16515 days ago · 5 km deep · 9 km away
  48. 1.69 km NE of Gilroy, California · 16515 days ago · 9 km deep · 59 km away
  49. 2.511 km N of Livermore, California · 16515 days ago · 12 km deep · 32 km away
  50. 1.62 km ENE of Berkeley, California · 16515 days ago · 8 km deep · 53 km away
  51. 1.69 km NE of San Martin, California · 16515 days ago · 7 km deep · 49 km away
  52. 2.47 km W of Mountain House, California · 16514 days ago · 7 km deep · 36 km away
  53. 1.8Northern California · 16513 days ago · 7 km deep · 28 km away
  54. 1.922 km SE of Livermore, California · 16513 days ago · 7 km deep · 28 km away
  55. 1.612 km ENE of East Foothills, California · 16513 days ago · 8 km deep · 20 km away
  56. 2.83 km NNW of Hollister, California · 16510 days ago · 8 km deep · 80 km away
  57. 1.72 km NE of Union City, California · 16509 days ago · 6 km deep · 16 km away
  58. 2.65 km S of Gilroy, California · 16509 days ago · 4 km deep · 67 km away
  59. 2.76 km ESE of Prunedale, California · 16508 days ago · 9 km deep · 87 km away
  60. 1.67 km ESE of Prunedale, California · 16508 days ago · 8 km deep · 87 km away

The first 60 of 101.

Before

  1. 1.79 km ESE of East Foothills, California · 16547 days ago · 7 km deep · 22 km away
  2. 2.41 km SSE of Portola Valley, California · 16547 days ago · 6 km deep · 35 km away
  3. 2.11 km SSE of Portola Valley, California · 16547 days ago · 7 km deep · 35 km away
  4. 1.81 km SSE of Portola Valley, California · 16547 days ago · 6 km deep · 35 km away
  5. 3.012 km E of Blackhawk, California · 16547 days ago · 16 km deep · 38 km away
  6. 1.716 km SE of Livermore, California · 16547 days ago · 2 km deep · 19 km away
  7. 2.47 km WSW of Gilroy, California · 16548 days ago · 5 km deep · 63 km away
  8. 2.77 km WSW of Gilroy, California · 16548 days ago · 5 km deep · 63 km away
  9. 2.315 km SE of Livermore, California · 16548 days ago · 2 km deep · 19 km away
  10. 1.64 km SSE of Fairview, California · 16549 days ago · 3 km deep · 21 km away
  11. 1.95 km SE of Aromas, California · 16549 days ago · 6 km deep · 76 km away
  12. 1.63 km NE of Day Valley, California · 16549 days ago · 3 km deep · 50 km away
  13. 1.55 km E of Fremont, California · 16550 days ago · 8 km deep · 6 km away
  14. 1.810 km SW of Brentwood, California · 16550 days ago · 15 km deep · 39 km away
  15. 1.611 km ESE of East Foothills, California · 16551 days ago · 7 km deep · 24 km away
  16. 2.211 km SW of Brentwood, California · 16551 days ago · 19 km deep · 38 km away
  17. 1.94 km SSW of Lagunitas-Forest Knolls, California · 16553 days ago · 0 km deep · 90 km away
  18. 2.35 km SW of Ridgemark, California · 16554 days ago · 10 km deep · 91 km away
  19. 2.36 km SW of Ridgemark, California · 16554 days ago · 8 km deep · 92 km away
  20. 1.85 km SW of Ridgemark, California · 16554 days ago · 10 km deep · 91 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1064258. Read Wed, Sep 23, 2026, 2:38 AM UTC.